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Add Exclude A Command From The ZSH History File as a Unix TIL

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2022-06-04 16:50:27 -05:00
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README.md
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@@ -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).
_1216 TILs and counting..._
_1217 TILs and counting..._
---
@@ -1157,6 +1157,7 @@ _1216 TILs and counting..._
- [Do A Dry Run Of An rsync](unix/do-a-dry-run-of-an-rsync.md)
- [Do Not Overwrite Existing Files](unix/do-not-overwrite-existing-files.md)
- [Enable Multi-Select Of Results With fzf](unix/enable-multi-select-of-results-with-fzf.md)
- [Exclude A Command From The ZSH History File](unix/exclude-a-command-from-the-zsh-history-file.md)
- [Exclude A Directory With Find](unix/exclude-a-directory-with-find.md)
- [Exclude Certain Files From An rsync Run](unix/exclude-certain-files-from-an-rsync-run.md)
- [Figure Out The Week Of The Year From The Terminal](unix/figure-out-the-week-of-the-year-from-the-terminal.md)

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unix/exclude-a-command-from-the-zsh-history-file.md Normal file
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# Exclude A Command From The ZSH History File
The `zsh` shell can be configured to record the commands you run from the
terminal in a history file. This is great for recalling and retrieving past
commands that you want to run again.
What about commands that I don't want written to a file on my machine? For
instance, if I'm running a command that includes a password, secret key, or
some other sensitive value, I don't want that saved in plaintext on my machine.
`zsh` has an affordance for this with the `hist_ignore_space` option. With that
option enabled, any command preceded by a space (`' '`) will be excluded from
the history file.
First, turn it on.
```zsh
$ setopt hist_ignore_space
```
Now, try a couple commands and see what shows up in the file.
```zsh
$ echo 'this command will be saved in history'
this command will be saved in history
$ echo 'this will be kept secret'
this will be kept secret
$ tail ~/.zsh_history
: 1654378676:0;echo 'this command will be saved in history'
: 1654378690:0;tail ~/.zsh_history
```
Notice how the second command with the prefixed space is excluded.
[source](https://unix.stackexchange.com/a/6104/5916)