Timeline for How to determine if a bash variable is empty?
Current License: CC BY-SA 3.0
28 events
| when toggle format | what | by | license | comment | |
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| Jun 21 at 7:26 | review | Suggested edits | |||
| Jun 21 at 17:42 | |||||
| Jun 7 at 11:56 | comment | added | djvg |
related: [[ vs [
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| Jul 31, 2022 at 14:58 | history | edited | chicks |
edited tags
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| Jul 31, 2022 at 12:50 | answer | added | mgutt | timeline score: -1 | |
| Aug 31, 2021 at 17:52 | answer | added | Raman Kathpalia | timeline score: 0 | |
| Nov 17, 2019 at 7:42 | comment | added | Sang |
In Bash, [[ -v VAR]] is to check if VAR is defined, [[ -z $VAR ]] is to check if "$VAR" is expanded to null string (""). Thus, you can use [[ -v VAR && -z $VAR ]]. read more here (with official reference)
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| Jun 10, 2019 at 21:36 | comment | added | codeforester | See: Test for non-zero length string in Bash on StackOverflow. | |
| Jun 10, 2019 at 16:19 | answer | added | rogerdpack | timeline score: -1 | |
| Nov 9, 2015 at 16:46 | answer | added | gluk47 | timeline score: 5 | |
| S Jul 1, 2015 at 22:41 | history | suggested | 030 | CC BY-SA 3.0 |
some syntax
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| Jul 1, 2015 at 21:10 | review | Suggested edits | |||
| S Jul 1, 2015 at 22:41 | |||||
| Apr 9, 2015 at 8:32 | history | tweeted | twitter.com/#!/ServerFault/status/586084144305811456 | ||
| S Jan 2, 2014 at 15:03 | history | suggested | vanda | CC BY-SA 3.0 |
add code to code tag
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| Jan 2, 2014 at 13:07 | review | Suggested edits | |||
| S Jan 2, 2014 at 15:03 | |||||
| Jul 22, 2013 at 17:13 | history | protected | Chris S | ||
| Aug 31, 2012 at 20:11 | answer | added | Luca Borrione | timeline score: 6 | |
| Aug 31, 2012 at 11:34 | answer | added | andrej | timeline score: 4 | |
| Apr 24, 2012 at 20:39 | answer | added | Richard Hansen | timeline score: 328 | |
| Feb 25, 2012 at 3:37 | answer | added | Dennis Williamson | timeline score: 335 | |
| Dec 9, 2011 at 15:15 | answer | added | Fedir RYKHTIK | timeline score: 5 | |
| Oct 20, 2011 at 3:58 | answer | added | curious_prism | timeline score: 11 | |
| May 20, 2010 at 20:52 | answer | added | JHS | timeline score: 4 | |
| Jan 26, 2010 at 14:02 | answer | added | namewithoutwords | timeline score: 7 | |
| Jun 11, 2009 at 13:19 | answer | added | Amandasaurus | timeline score: 47 | |
| May 12, 2009 at 18:39 | vote | accept | Brent | ||
| May 12, 2009 at 18:21 | answer | added | MikeyB | timeline score: 25 | |
| May 12, 2009 at 18:06 | answer | added | duffbeer703 | timeline score: 1377 | |
| May 12, 2009 at 17:54 | history | asked | Brent | CC BY-SA 2.5 |