Adding size of files using shell script












2















I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112





shell-script shell







share|improve this question




















  • 5





    you don't we simply use du?

    – msp9011
    Nov 21 '18 at 7:30






  • 1





    @msp9011, du will calculate also subdirectories

    – Romeo Ninov
    Nov 21 '18 at 7:39






  • 1





    @RomeoNinov here we are checking only files...du -b /etc/*.conf

    – msp9011
    Nov 21 '18 at 8:42











  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.

    – BlackJack
    Nov 21 '18 at 17:55











  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.

    – OrangeDog
    Nov 22 '18 at 11:45
















2















I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112





shell-script shell







share|improve this question




















  • 5





    you don't we simply use du?

    – msp9011
    Nov 21 '18 at 7:30






  • 1





    @msp9011, du will calculate also subdirectories

    – Romeo Ninov
    Nov 21 '18 at 7:39






  • 1





    @RomeoNinov here we are checking only files...du -b /etc/*.conf

    – msp9011
    Nov 21 '18 at 8:42











  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.

    – BlackJack
    Nov 21 '18 at 17:55











  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.

    – OrangeDog
    Nov 22 '18 at 11:45














2












2








2








I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112





shell-script shell







share|improve this question
















I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112





shell-script shell




shell-script shell






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 21 '18 at 7:16









muru

1




1










asked Nov 21 '18 at 7:13









C. CristiC. Cristi

1647




1647








  • 5





    you don't we simply use du?

    – msp9011
    Nov 21 '18 at 7:30






  • 1





    @msp9011, du will calculate also subdirectories

    – Romeo Ninov
    Nov 21 '18 at 7:39






  • 1





    @RomeoNinov here we are checking only files...du -b /etc/*.conf

    – msp9011
    Nov 21 '18 at 8:42











  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.

    – BlackJack
    Nov 21 '18 at 17:55











  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.

    – OrangeDog
    Nov 22 '18 at 11:45














  • 5





    you don't we simply use du?

    – msp9011
    Nov 21 '18 at 7:30






  • 1





    @msp9011, du will calculate also subdirectories

    – Romeo Ninov
    Nov 21 '18 at 7:39






  • 1





    @RomeoNinov here we are checking only files...du -b /etc/*.conf

    – msp9011
    Nov 21 '18 at 8:42











  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.

    – BlackJack
    Nov 21 '18 at 17:55











  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.

    – OrangeDog
    Nov 22 '18 at 11:45








5




5





you don't we simply use du?

– msp9011
Nov 21 '18 at 7:30





you don't we simply use du?

– msp9011
Nov 21 '18 at 7:30




1




1





@msp9011, du will calculate also subdirectories

– Romeo Ninov
Nov 21 '18 at 7:39





@msp9011, du will calculate also subdirectories

– Romeo Ninov
Nov 21 '18 at 7:39




1




1





@RomeoNinov here we are checking only files...du -b /etc/*.conf

– msp9011
Nov 21 '18 at 8:42





@RomeoNinov here we are checking only files...du -b /etc/*.conf

– msp9011
Nov 21 '18 at 8:42













@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.

– BlackJack
Nov 21 '18 at 17:55





@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.

– BlackJack
Nov 21 '18 at 17:55













@msp9011 due to block sizes, etc, disk usage is not the same as total file size.

– OrangeDog
Nov 22 '18 at 11:45





@msp9011 due to block sizes, etc, disk usage is not the same as total file size.

– OrangeDog
Nov 22 '18 at 11:45










5 Answers
5






active

oldest

votes


















2














You can do this …



total=0

for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 

    total=$(expr $total + $s)

done





share|improve this answer
























  • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

    – C. Cristi
    Nov 21 '18 at 7:25






  • 4





    Don't use grep or cut on stat output. stat has format flags (%s) for this

    – ohno
    Nov 21 '18 at 10:20






  • 5





    Also, 'Size' is likely to assume an English or "C " locale.

    – xenoid
    Nov 21 '18 at 13:43



















13














Also something like can do the work (with awk)



stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





share|improve this answer



















  • 1





    It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

    – TheDudeAbides
    Dec 19 '18 at 19:21





















12














stat -c "%s" /etc/*.conf|paste -sd+|bc -l





share|improve this answer
























  • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

    – TheDudeAbides
    Nov 21 '18 at 23:20








  • 2





    @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

    – Romeo Ninov
    Nov 22 '18 at 10:29



















10














With bc



{ stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



  • The stat format adds a + sign and a continuation character after each size

  • a 0 is appended at the end to close the dangling final +






share|improve this answer































    7














    The most straightforward way is to use du -bc:



    $ du -bc /etc/*.conf
    
5139    /etc/man_db.conf
    
393     /etc/nsswitch.conf
    
5532    total


    If you need to extract only the number of bytes, pipe the output to awk:



    $ du -bc /etc/*.conf | awk 'END { print $1 }'
    
5532





    share|improve this answer
























    • Hope ... OP doesn't require the grand total size of all files...

      – msp9011
      Nov 21 '18 at 8:55






    • 1





      Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

      – Ruslan
      Nov 21 '18 at 17:04













    • @Ruslan The awk line also strips off the total

      – Izkata
      Nov 21 '18 at 18:09











    • @Izkata oh, indeed, didn't notice this bit.

      – Ruslan
      Nov 21 '18 at 18:49











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    5 Answers
    5






    active

    oldest

    votes








    5 Answers
    5






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    2














    You can do this …



    total=0
    
for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 
    
    total=$(expr $total + $s)
    
done





    share|improve this answer
























    • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

      – C. Cristi
      Nov 21 '18 at 7:25






    • 4





      Don't use grep or cut on stat output. stat has format flags (%s) for this

      – ohno
      Nov 21 '18 at 10:20






    • 5





      Also, 'Size' is likely to assume an English or "C " locale.

      – xenoid
      Nov 21 '18 at 13:43
















    2














    You can do this …



    total=0
    
for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 
    
    total=$(expr $total + $s)
    
done





    share|improve this answer
























    • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

      – C. Cristi
      Nov 21 '18 at 7:25






    • 4





      Don't use grep or cut on stat output. stat has format flags (%s) for this

      – ohno
      Nov 21 '18 at 10:20






    • 5





      Also, 'Size' is likely to assume an English or "C " locale.

      – xenoid
      Nov 21 '18 at 13:43














    2












    2








    2







    You can do this …



    total=0
    
for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 
    
    total=$(expr $total + $s)
    
done





    share|improve this answer













    You can do this …



    total=0
    
for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 
    
    total=$(expr $total + $s)
    
done






    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Nov 21 '18 at 7:20









    Red CricketRed Cricket

    1,22931833




    1,22931833













    • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

      – C. Cristi
      Nov 21 '18 at 7:25






    • 4





      Don't use grep or cut on stat output. stat has format flags (%s) for this

      – ohno
      Nov 21 '18 at 10:20






    • 5





      Also, 'Size' is likely to assume an English or "C " locale.

      – xenoid
      Nov 21 '18 at 13:43



















    • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

      – C. Cristi
      Nov 21 '18 at 7:25






    • 4





      Don't use grep or cut on stat output. stat has format flags (%s) for this

      – ohno
      Nov 21 '18 at 10:20






    • 5





      Also, 'Size' is likely to assume an English or "C " locale.

      – xenoid
      Nov 21 '18 at 13:43

















    Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

    – C. Cristi
    Nov 21 '18 at 7:25





    Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?

    – C. Cristi
    Nov 21 '18 at 7:25




    4




    4





    Don't use grep or cut on stat output. stat has format flags (%s) for this

    – ohno
    Nov 21 '18 at 10:20





    Don't use grep or cut on stat output. stat has format flags (%s) for this

    – ohno
    Nov 21 '18 at 10:20




    5




    5





    Also, 'Size' is likely to assume an English or "C " locale.

    – xenoid
    Nov 21 '18 at 13:43





    Also, 'Size' is likely to assume an English or "C " locale.

    – xenoid
    Nov 21 '18 at 13:43













    13














    Also something like can do the work (with awk)



    stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





    share|improve this answer



















    • 1





      It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

      – TheDudeAbides
      Dec 19 '18 at 19:21


















    13














    Also something like can do the work (with awk)



    stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





    share|improve this answer



















    • 1





      It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

      – TheDudeAbides
      Dec 19 '18 at 19:21
















    13












    13








    13







    Also something like can do the work (with awk)



    stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





    share|improve this answer













    Also something like can do the work (with awk)



    stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'






    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Nov 21 '18 at 7:35









    Romeo NinovRomeo Ninov

    6,79432129




    6,79432129








    • 1





      It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

      – TheDudeAbides
      Dec 19 '18 at 19:21
















    • 1





      It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

      – TheDudeAbides
      Dec 19 '18 at 19:21










    1




    1





    It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

    – TheDudeAbides
    Dec 19 '18 at 19:21







    It requires you know a little AWK syntax (which, on the whole, is graciously C-like), but AWK is good at "sum up this column in this delimited file and print the total for me." Sometimes I forget. :)

    – TheDudeAbides
    Dec 19 '18 at 19:21













    12














    stat -c "%s" /etc/*.conf|paste -sd+|bc -l





    share|improve this answer
























    • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

      – TheDudeAbides
      Nov 21 '18 at 23:20








    • 2





      @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

      – Romeo Ninov
      Nov 22 '18 at 10:29
















    12














    stat -c "%s" /etc/*.conf|paste -sd+|bc -l





    share|improve this answer
























    • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

      – TheDudeAbides
      Nov 21 '18 at 23:20








    • 2





      @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

      – Romeo Ninov
      Nov 22 '18 at 10:29














    12












    12








    12







    stat -c "%s" /etc/*.conf|paste -sd+|bc -l





    share|improve this answer













    stat -c "%s" /etc/*.conf|paste -sd+|bc -l






    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Nov 21 '18 at 7:22









    Ipor SircerIpor Sircer

    10.9k11124




    10.9k11124













    • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

      – TheDudeAbides
      Nov 21 '18 at 23:20








    • 2





      @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

      – Romeo Ninov
      Nov 22 '18 at 10:29



















    • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

      – TheDudeAbides
      Nov 21 '18 at 23:20








    • 2





      @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

      – Romeo Ninov
      Nov 22 '18 at 10:29

















    Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

    – TheDudeAbides
    Nov 21 '18 at 23:20







    Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.

    – TheDudeAbides
    Nov 21 '18 at 23:20






    2




    2





    @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

    – Romeo Ninov
    Nov 22 '18 at 10:29





    @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable

    – Romeo Ninov
    Nov 22 '18 at 10:29











    10














    With bc



    { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



    • The stat format adds a + sign and a continuation character after each size

    • a 0 is appended at the end to close the dangling final +






    share|improve this answer




























      10














      With bc



      { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



      • The stat format adds a + sign and a continuation character after each size

      • a 0 is appended at the end to close the dangling final +






      share|improve this answer


























        10












        10








        10







        With bc



        { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



        • The stat format adds a + sign and a continuation character after each size

        • a 0 is appended at the end to close the dangling final +






        share|improve this answer













        With bc



        { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



        • The stat format adds a + sign and a continuation character after each size

        • a 0 is appended at the end to close the dangling final +







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 21 '18 at 10:06









        xenoidxenoid

        3,1851826




        3,1851826























            7














            The most straightforward way is to use du -bc:



            $ du -bc /etc/*.conf
            
5139    /etc/man_db.conf
            
393     /etc/nsswitch.conf
            
5532    total


            If you need to extract only the number of bytes, pipe the output to awk:



            $ du -bc /etc/*.conf | awk 'END { print $1 }'
            
5532





            share|improve this answer
























            • Hope ... OP doesn't require the grand total size of all files...

              – msp9011
              Nov 21 '18 at 8:55






            • 1





              Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

              – Ruslan
              Nov 21 '18 at 17:04













            • @Ruslan The awk line also strips off the total

              – Izkata
              Nov 21 '18 at 18:09











            • @Izkata oh, indeed, didn't notice this bit.

              – Ruslan
              Nov 21 '18 at 18:49
















            7














            The most straightforward way is to use du -bc:



            $ du -bc /etc/*.conf
            
5139    /etc/man_db.conf
            
393     /etc/nsswitch.conf
            
5532    total


            If you need to extract only the number of bytes, pipe the output to awk:



            $ du -bc /etc/*.conf | awk 'END { print $1 }'
            
5532





            share|improve this answer
























            • Hope ... OP doesn't require the grand total size of all files...

              – msp9011
              Nov 21 '18 at 8:55






            • 1





              Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

              – Ruslan
              Nov 21 '18 at 17:04













            • @Ruslan The awk line also strips off the total

              – Izkata
              Nov 21 '18 at 18:09











            • @Izkata oh, indeed, didn't notice this bit.

              – Ruslan
              Nov 21 '18 at 18:49














            7












            7








            7







            The most straightforward way is to use du -bc:



            $ du -bc /etc/*.conf
            
5139    /etc/man_db.conf
            
393     /etc/nsswitch.conf
            
5532    total


            If you need to extract only the number of bytes, pipe the output to awk:



            $ du -bc /etc/*.conf | awk 'END { print $1 }'
            
5532





            share|improve this answer













            The most straightforward way is to use du -bc:



            $ du -bc /etc/*.conf
            
5139    /etc/man_db.conf
            
393     /etc/nsswitch.conf
            
5532    total


            If you need to extract only the number of bytes, pipe the output to awk:



            $ du -bc /etc/*.conf | awk 'END { print $1 }'
            
5532






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 21 '18 at 8:43









            Martin FrodlMartin Frodl

            1884




            1884













            • Hope ... OP doesn't require the grand total size of all files...

              – msp9011
              Nov 21 '18 at 8:55






            • 1





              Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

              – Ruslan
              Nov 21 '18 at 17:04













            • @Ruslan The awk line also strips off the total

              – Izkata
              Nov 21 '18 at 18:09











            • @Izkata oh, indeed, didn't notice this bit.

              – Ruslan
              Nov 21 '18 at 18:49



















            • Hope ... OP doesn't require the grand total size of all files...

              – msp9011
              Nov 21 '18 at 8:55






            • 1





              Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

              – Ruslan
              Nov 21 '18 at 17:04













            • @Ruslan The awk line also strips off the total

              – Izkata
              Nov 21 '18 at 18:09











            • @Izkata oh, indeed, didn't notice this bit.

              – Ruslan
              Nov 21 '18 at 18:49

















            Hope ... OP doesn't require the grand total size of all files...

            – msp9011
            Nov 21 '18 at 8:55





            Hope ... OP doesn't require the grand total size of all files...

            – msp9011
            Nov 21 '18 at 8:55




            1




            1





            Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

            – Ruslan
            Nov 21 '18 at 17:04







            Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.

            – Ruslan
            Nov 21 '18 at 17:04















            @Ruslan The awk line also strips off the total

            – Izkata
            Nov 21 '18 at 18:09





            @Ruslan The awk line also strips off the total

            – Izkata
            Nov 21 '18 at 18:09













            @Izkata oh, indeed, didn't notice this bit.

            – Ruslan
            Nov 21 '18 at 18:49





            @Izkata oh, indeed, didn't notice this bit.

            – Ruslan
            Nov 21 '18 at 18:49


















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