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4285baa6e1
When you chroot in Debian, bash shows the chroot environment in the prompt:
```bash
...
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
debian_chroot=$(cat /etc/debian_chroot)
fi
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
...
```
This is the effect:
```
(chroot_env) user@host:~#
```
It is useful when chrooting, since usually the hostname remains the same and thus you can't distinguish where you are.
56 lines
2.1 KiB
Fish
56 lines
2.1 KiB
Fish
# name: Debian chroot
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# author: Maurizio De Santis
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function fish_prompt --description 'Write out the prompt, prepending the Debian chroot environment if present'
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# Just calculate these once, to save a few cycles when displaying the prompt
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if not set -q __fish_prompt_hostname
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set -g __fish_prompt_hostname (hostname|cut -d . -f 1)
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end
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if not set -q __fish_prompt_normal
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set -g __fish_prompt_normal (set_color normal)
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end
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if not set -q __fish_prompt_chroot_env
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set -g __fish_prompt_chroot_env (set_color yellow)
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end
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# Set variable identifying the chroot you work in (used in the prompt below)
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if begin; not set -q debian_chroot; and test -r /etc/debian_chroot; end
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set debian_chroot (cat /etc/debian_chroot)
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end
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if begin; not set -q __fish_debian_chroot_prompt; and set -q debian_chroot; and test -n $debian_chroot; end
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set -g __fish_debian_chroot_prompt "($debian_chroot)"
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end
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# Prepend the chroot environment if present
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if set -q __fish_debian_chroot_prompt
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echo -n -s "$__fish_prompt_chroot_env" "$__fish_debian_chroot_prompt" "$__fish_prompt_normal" ' '
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end
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switch $USER
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case root
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if not set -q __fish_prompt_cwd
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if set -q fish_color_cwd_root
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set -g __fish_prompt_cwd (set_color $fish_color_cwd_root)
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else
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set -g __fish_prompt_cwd (set_color $fish_color_cwd)
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end
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end
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echo -n -s "$USER" @ "$__fish_prompt_hostname" ' ' "$__fish_prompt_cwd" (prompt_pwd) "$__fish_prompt_normal" '# '
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case '*'
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if not set -q __fish_prompt_cwd
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set -g __fish_prompt_cwd (set_color $fish_color_cwd)
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end
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echo -n -s "$USER" @ "$__fish_prompt_hostname" ' ' "$__fish_prompt_cwd" (prompt_pwd) "$__fish_prompt_normal" '> '
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end
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end
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