mirror of
https://github.com/jbranchaud/til
synced 2026-01-18 06:28:02 +00:00
Compare commits
1 Commits
de344ef329
...
61a46bf95a
| Author | SHA1 | Date | |
|---|---|---|---|
|
|
61a46bf95a |
@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
|
||||
|
||||
For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
|
||||
|
||||
_1508 TILs and counting..._
|
||||
_1507 TILs and counting..._
|
||||
|
||||
---
|
||||
|
||||
@@ -1465,7 +1465,6 @@ _1508 TILs and counting..._
|
||||
- [Global Substitution On The Previous Command](unix/global-substitution-on-the-previous-command.md)
|
||||
- [Globbing For All Directories In Zsh](unix/globbing-for-all-directories-in-zsh.md)
|
||||
- [Globbing For Filenames In Zsh](unix/globbing-for-filenames-in-zsh.md)
|
||||
- [Gracefully Exit A Script With Trap](unix/gracefully-exit-a-script-with-trap.md)
|
||||
- [Grep For Files Without A Match](unix/grep-for-files-without-a-match.md)
|
||||
- [Grep For Files With Multiple Matches](unix/grep-for-files-with-multiple-matches.md)
|
||||
- [Grep For Multiple Patterns](unix/grep-for-multiple-patterns.md)
|
||||
|
||||
@@ -1,29 +0,0 @@
|
||||
# Gracefully Exit A Script With Trap
|
||||
|
||||
With `trap` you can intercept signals that would cause your script to exit and
|
||||
then inject some additional behavior. Perhaps you want to make sure the script
|
||||
cleans up after itself before it exists.
|
||||
|
||||
During this script's execution, it creates a file in the filesystem. It would
|
||||
be nice to make sure that no matter path this script ends up down that it will
|
||||
clean up after itself as it exits. We set up a `trap` that looks for the `EXIT`
|
||||
signal to do this.
|
||||
|
||||
```bash
|
||||
# Set up trap
|
||||
trap 'echo "Cleaning up temp files"; rm -f *.tmp' EXIT
|
||||
|
||||
# Create temporary file
|
||||
echo "test data" > work.tmp
|
||||
|
||||
# Do some work
|
||||
cat work.tmp
|
||||
|
||||
# Trap will clean up on exit
|
||||
```
|
||||
|
||||
Whatever is in quotes is what the trap will execute when it is triggered. The
|
||||
following one or more signals are what the trap listens for, in this case
|
||||
`EXIT`.
|
||||
|
||||
[source](https://tldp.org/LDP/Bash-Beginners-Guide/html/sect_12_02.html)
|
||||
Reference in New Issue
Block a user