incron on Ubuntu - bash script called by incrontab - dollar parentheses $(command) command substitutions fail
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I have a bash script that runs fine from the command line, but when it's called from incrontab the substitutions fail. The script runs, but the commands in $(...) fail :(
My incrontab -e :
/home/kelly/summer IN_CREATE /bin/bash /usr/share/summerwear/notify.sh
in my script (notify.sh) :
#!/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "The swimwear request is $swimwear" > /home/kelly/log.txt
The contents of my log file then look like this:
The swimwear request is
..
An example of the incoming inquiry.txt file:
request 1 - swimsuit - blue - daytime - informal
request 2 - gown - black - nighttime - formal
..
Setting the PATH and SHELL from incron.conf doesn't seem to make a difference.
I have also tried variations of stuff like this:
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
SHELL=/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "swimwear equals $swimwear" > /home/kelly/log.txt
And every combination I can think of:
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
swimwear=$("grep -i swimsuit /home/kelly/summer/inquiry.txt")
swimwear=$(grep -i 'swimsuit' "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i swimsuit "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i $("swimsuit" "/home/kelly/summer/inquiry.txt"))
swimwear=$( $(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt"))
..and endless combinations of single-quotes, double quotes, no-quotes, etc.
...as well as specifying the grep PATH:
swimwear=$(/bin/grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
(etc.)...
There are several posts dealing with setting and/or specifying the PATH and SHELL for cron jobs, crontab, etc., but I'm not seeing a whole lot of information out there regarding "incrontab" specifically.
Any help is greatly appreciated!
bash ubuntu incron
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up vote
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down vote
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I have a bash script that runs fine from the command line, but when it's called from incrontab the substitutions fail. The script runs, but the commands in $(...) fail :(
My incrontab -e :
/home/kelly/summer IN_CREATE /bin/bash /usr/share/summerwear/notify.sh
in my script (notify.sh) :
#!/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "The swimwear request is $swimwear" > /home/kelly/log.txt
The contents of my log file then look like this:
The swimwear request is
..
An example of the incoming inquiry.txt file:
request 1 - swimsuit - blue - daytime - informal
request 2 - gown - black - nighttime - formal
..
Setting the PATH and SHELL from incron.conf doesn't seem to make a difference.
I have also tried variations of stuff like this:
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
SHELL=/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "swimwear equals $swimwear" > /home/kelly/log.txt
And every combination I can think of:
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
swimwear=$("grep -i swimsuit /home/kelly/summer/inquiry.txt")
swimwear=$(grep -i 'swimsuit' "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i swimsuit "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i $("swimsuit" "/home/kelly/summer/inquiry.txt"))
swimwear=$( $(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt"))
..and endless combinations of single-quotes, double quotes, no-quotes, etc.
...as well as specifying the grep PATH:
swimwear=$(/bin/grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
(etc.)...
There are several posts dealing with setting and/or specifying the PATH and SHELL for cron jobs, crontab, etc., but I'm not seeing a whole lot of information out there regarding "incrontab" specifically.
Any help is greatly appreciated!
bash ubuntu incron
1
Suggestion: try logging errors in the script by addingexec 1>/home/kelly/log-output.txt 2>/home/kelly/log-errors.txt
at the beginning of the script.
– Gordon Davisson
Nov 11 at 7:30
Wow, thanks @GordonDavisson for this answer! It eventually helped me solve the problem, which was this: My script began running as soon as the the file was created, but before the data actually appeared. $(grep..) was working all along, but it took a couple of milliseconds for any data to be uploaded. The solution: in my "incrontab -e", I changed: IN_CREATE to: IN_CLOSE_WRITE Thanks again for your reply! Marking as solved.
– PonyGirl2ElectricBugaloo
Nov 12 at 4:04
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have a bash script that runs fine from the command line, but when it's called from incrontab the substitutions fail. The script runs, but the commands in $(...) fail :(
My incrontab -e :
/home/kelly/summer IN_CREATE /bin/bash /usr/share/summerwear/notify.sh
in my script (notify.sh) :
#!/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "The swimwear request is $swimwear" > /home/kelly/log.txt
The contents of my log file then look like this:
The swimwear request is
..
An example of the incoming inquiry.txt file:
request 1 - swimsuit - blue - daytime - informal
request 2 - gown - black - nighttime - formal
..
Setting the PATH and SHELL from incron.conf doesn't seem to make a difference.
I have also tried variations of stuff like this:
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
SHELL=/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "swimwear equals $swimwear" > /home/kelly/log.txt
And every combination I can think of:
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
swimwear=$("grep -i swimsuit /home/kelly/summer/inquiry.txt")
swimwear=$(grep -i 'swimsuit' "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i swimsuit "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i $("swimsuit" "/home/kelly/summer/inquiry.txt"))
swimwear=$( $(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt"))
..and endless combinations of single-quotes, double quotes, no-quotes, etc.
...as well as specifying the grep PATH:
swimwear=$(/bin/grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
(etc.)...
There are several posts dealing with setting and/or specifying the PATH and SHELL for cron jobs, crontab, etc., but I'm not seeing a whole lot of information out there regarding "incrontab" specifically.
Any help is greatly appreciated!
bash ubuntu incron
I have a bash script that runs fine from the command line, but when it's called from incrontab the substitutions fail. The script runs, but the commands in $(...) fail :(
My incrontab -e :
/home/kelly/summer IN_CREATE /bin/bash /usr/share/summerwear/notify.sh
in my script (notify.sh) :
#!/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "The swimwear request is $swimwear" > /home/kelly/log.txt
The contents of my log file then look like this:
The swimwear request is
..
An example of the incoming inquiry.txt file:
request 1 - swimsuit - blue - daytime - informal
request 2 - gown - black - nighttime - formal
..
Setting the PATH and SHELL from incron.conf doesn't seem to make a difference.
I have also tried variations of stuff like this:
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
SHELL=/bin/bash
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
echo "swimwear equals $swimwear" > /home/kelly/log.txt
And every combination I can think of:
swimwear=$(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
swimwear=$("grep -i swimsuit /home/kelly/summer/inquiry.txt")
swimwear=$(grep -i 'swimsuit' "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i swimsuit "/home/kelly/summer/inquiry.txt")
swimwear=$(grep -i $("swimsuit" "/home/kelly/summer/inquiry.txt"))
swimwear=$( $(grep -i "swimsuit" "/home/kelly/summer/inquiry.txt"))
..and endless combinations of single-quotes, double quotes, no-quotes, etc.
...as well as specifying the grep PATH:
swimwear=$(/bin/grep -i "swimsuit" "/home/kelly/summer/inquiry.txt")
(etc.)...
There are several posts dealing with setting and/or specifying the PATH and SHELL for cron jobs, crontab, etc., but I'm not seeing a whole lot of information out there regarding "incrontab" specifically.
Any help is greatly appreciated!
bash ubuntu incron
bash ubuntu incron
asked Nov 11 at 4:22
PonyGirl2ElectricBugaloo
1
1
1
Suggestion: try logging errors in the script by addingexec 1>/home/kelly/log-output.txt 2>/home/kelly/log-errors.txt
at the beginning of the script.
– Gordon Davisson
Nov 11 at 7:30
Wow, thanks @GordonDavisson for this answer! It eventually helped me solve the problem, which was this: My script began running as soon as the the file was created, but before the data actually appeared. $(grep..) was working all along, but it took a couple of milliseconds for any data to be uploaded. The solution: in my "incrontab -e", I changed: IN_CREATE to: IN_CLOSE_WRITE Thanks again for your reply! Marking as solved.
– PonyGirl2ElectricBugaloo
Nov 12 at 4:04
add a comment |
1
Suggestion: try logging errors in the script by addingexec 1>/home/kelly/log-output.txt 2>/home/kelly/log-errors.txt
at the beginning of the script.
– Gordon Davisson
Nov 11 at 7:30
Wow, thanks @GordonDavisson for this answer! It eventually helped me solve the problem, which was this: My script began running as soon as the the file was created, but before the data actually appeared. $(grep..) was working all along, but it took a couple of milliseconds for any data to be uploaded. The solution: in my "incrontab -e", I changed: IN_CREATE to: IN_CLOSE_WRITE Thanks again for your reply! Marking as solved.
– PonyGirl2ElectricBugaloo
Nov 12 at 4:04
1
1
Suggestion: try logging errors in the script by adding
exec 1>/home/kelly/log-output.txt 2>/home/kelly/log-errors.txt
at the beginning of the script.– Gordon Davisson
Nov 11 at 7:30
Suggestion: try logging errors in the script by adding
exec 1>/home/kelly/log-output.txt 2>/home/kelly/log-errors.txt
at the beginning of the script.– Gordon Davisson
Nov 11 at 7:30
Wow, thanks @GordonDavisson for this answer! It eventually helped me solve the problem, which was this: My script began running as soon as the the file was created, but before the data actually appeared. $(grep..) was working all along, but it took a couple of milliseconds for any data to be uploaded. The solution: in my "incrontab -e", I changed: IN_CREATE to: IN_CLOSE_WRITE Thanks again for your reply! Marking as solved.
– PonyGirl2ElectricBugaloo
Nov 12 at 4:04
Wow, thanks @GordonDavisson for this answer! It eventually helped me solve the problem, which was this: My script began running as soon as the the file was created, but before the data actually appeared. $(grep..) was working all along, but it took a couple of milliseconds for any data to be uploaded. The solution: in my "incrontab -e", I changed: IN_CREATE to: IN_CLOSE_WRITE Thanks again for your reply! Marking as solved.
– PonyGirl2ElectricBugaloo
Nov 12 at 4:04
add a comment |
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1
Suggestion: try logging errors in the script by adding
exec 1>/home/kelly/log-output.txt 2>/home/kelly/log-errors.txt
at the beginning of the script.– Gordon Davisson
Nov 11 at 7:30
Wow, thanks @GordonDavisson for this answer! It eventually helped me solve the problem, which was this: My script began running as soon as the the file was created, but before the data actually appeared. $(grep..) was working all along, but it took a couple of milliseconds for any data to be uploaded. The solution: in my "incrontab -e", I changed: IN_CREATE to: IN_CLOSE_WRITE Thanks again for your reply! Marking as solved.
– PonyGirl2ElectricBugaloo
Nov 12 at 4:04