How to evaluate date from a string
Here are my files :
conf.txt
case1:fooYYYYmmdd.bar
case2:helloYYYYmmdd.world
script.sh
fname=`grep $1 conf.txt | cut -d ':' -f2`
When calling my script.sh with a parameter being case1 or case2, I obviously get my var fname fed with fooYYYYmmdd.bar or helloYYYmmdd.world.
How could I evaluate the date from my conf.txt so fname would be set with foo20181120.bar and hello20181120.world without going through breaking and building back my string ?
bash shell date variables ksh
asked Nov 20 '18 at 7:45
WillWill
418316
add a comment |
Here are my files :
conf.txt
case1:fooYYYYmmdd.bar
case2:helloYYYYmmdd.world
script.sh
fname=`grep $1 conf.txt | cut -d ':' -f2`
When calling my script.sh with a parameter being case1 or case2, I obviously get my var fname fed with fooYYYYmmdd.bar or helloYYYmmdd.world.
How could I evaluate the date from my conf.txt so fname would be set with foo20181120.bar and hello20181120.world without going through breaking and building back my string ?
bash shell date variables ksh
asked Nov 20 '18 at 7:45
WillWill
418316
add a comment |
Here are my files :
conf.txt
case1:fooYYYYmmdd.bar
case2:helloYYYYmmdd.world
script.sh
fname=`grep $1 conf.txt | cut -d ':' -f2`
When calling my script.sh with a parameter being case1 or case2, I obviously get my var fname fed with fooYYYYmmdd.bar or helloYYYmmdd.world.
How could I evaluate the date from my conf.txt so fname would be set with foo20181120.bar and hello20181120.world without going through breaking and building back my string ?
bash shell date variables ksh
asked Nov 20 '18 at 7:45
WillWill
418316
Here are my files :
conf.txt
case1:fooYYYYmmdd.bar
case2:helloYYYYmmdd.world
script.sh
fname=`grep $1 conf.txt | cut -d ':' -f2`
When calling my script.sh with a parameter being case1 or case2, I obviously get my var fname fed with fooYYYYmmdd.bar or helloYYYmmdd.world.
How could I evaluate the date from my conf.txt so fname would be set with foo20181120.bar and hello20181120.world without going through breaking and building back my string ?
bash shell date variables ksh
bash shell date variables ksh
asked Nov 20 '18 at 7:45
WillWill
418316
asked Nov 20 '18 at 7:45
WillWill
418316
asked Nov 20 '18 at 7:45
WillWill
418316
asked Nov 20 '18 at 7:45
WillWill
418316
asked Nov 20 '18 at 7:45
WillWill
418316
418316
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You could just declare a Date variable and use it in fname, like this:
Date=$(date +%Y%m%d)
fname=$(grep $1 conf.txt |sed "s/YYYYmmdd/$Date/g"|cut -d ':' -f2)
echo $fname
answered Nov 20 '18 at 8:10
User123User123
647413
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53388359%2fhow-to-evaluate-date-from-a-string%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You could just declare a Date variable and use it in fname, like this:
Date=$(date +%Y%m%d)
fname=$(grep $1 conf.txt |sed "s/YYYYmmdd/$Date/g"|cut -d ':' -f2)
echo $fname
answered Nov 20 '18 at 8:10
User123User123
647413
add a comment |
You could just declare a Date variable and use it in fname, like this:
Date=$(date +%Y%m%d)
fname=$(grep $1 conf.txt |sed "s/YYYYmmdd/$Date/g"|cut -d ':' -f2)
echo $fname
answered Nov 20 '18 at 8:10
User123User123
647413
add a comment |
You could just declare a Date variable and use it in fname, like this:
Date=$(date +%Y%m%d)
fname=$(grep $1 conf.txt |sed "s/YYYYmmdd/$Date/g"|cut -d ':' -f2)
echo $fname
answered Nov 20 '18 at 8:10
User123User123
647413
You could just declare a Date variable and use it in fname, like this:
Date=$(date +%Y%m%d)
fname=$(grep $1 conf.txt |sed "s/YYYYmmdd/$Date/g"|cut -d ':' -f2)
echo $fname
answered Nov 20 '18 at 8:10
User123User123
647413
edited Nov 20 '18 at 9:02
answered Nov 20 '18 at 8:10
User123User123
647413
answered Nov 20 '18 at 8:10
User123User123
647413
answered Nov 20 '18 at 8:10
User123User123
647413
647413
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53388359%2fhow-to-evaluate-date-from-a-string%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
