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shaumux
l33t
Joined: 13 May 2005
Posts: 907
Location: India
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 Posted: Wed Aug 13, 2008 9:37 am Post subject: ZSH customization and system shell -Solved |
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I installed zsh and set it up the i would like,
still some things remain
1. I don't get the coloured output from ls etc. how do i enable those?
2. Also can i use ZSH exclusively making it the system shell and how do i gou about doing it
Do i just link /bin/sh to it or is there a gentoo way.
3. Also i chose to use the gentoo prompt but i would like to modify it just a little and replace % with $ in a user prompt
Can i do that without creating a new prompt from scratch?
Thanks
Last edited by shaumux on Fri Aug 15, 2008 6:31 pm; edited 1 time in total |
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yngwin
Developer
Joined: 19 Dec 2002
Posts: 3536
Location: in the Dutch Mountains ;-)
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| Posted: Wed Aug 13, 2008 7:21 pm Post subject: |
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1) add alias ls="ls --color" to your .zshrc, and similar lines for other commands
2) set your default login shell in /etc/passwd
3) i don't know, i just made my own
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shaumux
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Joined: 13 May 2005
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Location: India
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| Posted: Wed Aug 13, 2008 7:25 pm Post subject: |
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Thanks for th reply.
Still is it safe to link /bin/sh to zsh instead of bash? |
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mv
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Joined: 20 Apr 2005
Posts: 1542
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| Posted: Thu Aug 14, 2008 8:27 am Post subject: |
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| shaumux wrote: | | Still is it safe to link /bin/sh to zsh instead of bash? |
No. |
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tarpman
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Joined: 03 Nov 2004
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Location: Victoria, BC, Canada
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| Posted: Thu Aug 14, 2008 12:08 pm Post subject: |
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| mv wrote: | | shaumux wrote: | | Still is it safe to link /bin/sh to zsh instead of bash? |
No. |
Why not? Several of my systems have been running quite happily for several months with dash as /bin/sh, and I'm pretty sure zsh provides at least the same functionality as dash even in sh emulation...
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mv
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Joined: 20 Apr 2005
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| Posted: Thu Aug 14, 2008 12:50 pm Post subject: |
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| tarpman wrote: | | mv wrote: | | shaumux wrote: | | Still is it safe to link /bin/sh to zsh instead of bash? |
No. |
Why not? |
Sigh - so I have to give the long answer. - It is currently not even completely save to use dash as /bin/sh. I also use it, and most things work, but it is not safe. For instance, several init-scripts are still not sh-compatible (most notably that of udftools, although the bug report soon has its first birthday), and even basic things like "man" do not work properly.
- Scripts using bashisms will usually not run anyway, most notably [[ $VAR ]] gives an error.
- It simply does not make sense to link /bin/sh to zsh: zsh switches only into an "sh-compatibility mode" which is certainly not what the OP wanted to have with this link (e.g. if the login-shell is /bin/sh, root will not have a "proper" zsh, but only a "sh-compatibility-mode zsh").
- Even in the sh-compatibility-mode, zsh probably does not behave exactly like dash (if no bashisms are used in the script). I have not checked, but it is certainly not too hard to find some special variables which are set in this case which are not set for dash or which - when set - have some special meaning. Moreover, some zsh commands are not fully POSIX. Recently, I found e.g. that "time -p" does not work (or works differently) for zsh.
- And again: it simply does not make sense to link /bin/sh to zsh: For dash, this is useful, because dash is faster and smaller than bash. But replacing bash by an even larger shell - if the additional power is not used - simply does not make any sense.
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shaumux
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Joined: 13 May 2005
Posts: 907
Location: India
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| Posted: Thu Aug 14, 2008 2:31 pm Post subject: |
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Thanks for explaining.
So if dash is faster and smaller can I use dash as /bin/sh and get rid of bash? |
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mv
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| Posted: Fri Aug 15, 2008 2:45 am Post subject: |
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| shaumux wrote: | | So if dash is faster and smaller can I use dash as /bin/sh |
Yes, with some limitations which I have mentioned: You have to patch some initscripts and man (the latter can be avoided by exporting MANPL=65535, but this is only a dirty hack). Occassionally there are also some bash scripts which have mistakenly written "#!/bin/sh" in their header although they mean #!/bin/bash, and sometimes badly written configure oder make scripts fail, i.e. you have to be prepared to write some bug reports. But this does not happen very often.
| Quote: | | and get rid of bash? |
It depends on what you mean by "getting rid". If you mean "erasing from your harddisk" the answer is negative, because many programs depend explicitly on /bin/bash, the most important being portage. |
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ocin
Guru
Joined: 01 Jan 2006
Posts: 457
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| Posted: Fri Aug 15, 2008 5:31 pm Post subject: |
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1. do not unmerge bash
2. man chsh to change your default login shell (or edit /etc/passwd manually) |
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