21 lines
1.1 KiB
HTML
21 lines
1.1 KiB
HTML
<article id="tips">
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<div class="puffies" aria-hidden="true">🐡🐡🐡</div>
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<h2>Shell tips</h2>
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<p>It is easy to add autocompletion to commands in ksh, however they are limited because they have to be evaluated when the shell is starting.</p>
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<p>In the following example, we can parse the file <pre>~/.ssh/known_hosts</pre> to get hostnames and use this list to set completion for some commands:
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<pre>
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HOSTS_LIST=$(awk '{split($1,a,","); print a[1]}' ~/.ssh/known_hosts)
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set -A complete_ssh -- $HOSTS_LIST
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set -A complete_ping -- $HOSTS_LIST
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set -A complete_sndioctl_1 -- $(sndioctl | cut -d= -f 1)
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</pre></p>
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<p>In this other example, we add different completion depending on the parameter position
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<pre>set -A complete_rclone_1 -- ncdu ls copy sync
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set -A complete_rclone_2 -- $(rclone listremotes)
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</pre>
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Adding completion is easy but this will be evaluated at runtime, so you should avoid time consuming evaluations and some commands like scp or git can't receive much useful completion.</p>
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<p>More information can be found about this feature <a class="permalink" href="https://man.openbsd.org/ksh#Emacs_editing_mode">in ksh man page</a>.</p>
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</article>
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