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

unix/exclude-a-command-from-the-zsh-history-file.md

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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)