On Wednesday, November 2, 2011 9:11:12 AM UTC+8, leif wrote:
>
> On 2 Nov., 01:22, Keshav Kini <[email protected]> wrote:
> > Another possibility is to set PS1 in the new shell to an expanded PS1
> from
> > the old shell by creating a dynamic string:
> >
> > fs@zhenghe ~/tmp $ echo "export PS1=\"(sage -sh) $PS1\"" #run this
> string
> > in the new shell
> > export PS1="(sage -sh) \[\033[01;32m\]\u@\h\[\033[01;34m\] \w
> $\[\033[00m\]
> > "
> >
> > Maybe useful?
>
> I don't exactly understand what you mean, but at least for bash we
> could first run an "interactive" shell to just get the prompt, and
> then append to that (PS1) before starting the real interactive shell:
>
> case "$SHELL_NAME" in
> bash)
> PS1="`bash -i -c 'echo $PS1'` sage>"
> ...
> ...
> esac
>
>
> -leif
This is very good. It works for all shells probably. Since it works even
with busybox (ash shell).
~/tmp> cat test
#!/bin/sh
echo "this is for ash: $(/bin/busybox sh -i -c 'echo $PS1')"
echo "this is for bash: $(bash -i -c 'echo $PS1')"
echo "this is for zsh: $(zsh -i -c 'echo $PS1')"
~/tmp> ./test
this is for ash: \w \$
this is for bash: \[\033[01;34m\] \w $\[\033[00m\]
this is for zsh: %{%}%30<...<%~%(?.. %{%}[%?]%{%} )%{%}>%{%}
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