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I have the following in my .bash_profile (from a similar question here:

PROMPT_COMMAND='pwd2=$(sed "s:\([^/]\)[^/]*/:\1/:g" <<<$PWD)'
PS1='\u@\h:$pwd2\$ '

However, if the current directory is within a .dir (such as ~/.vim/bundle/) then the prompt just displays a .:

chris@DeathStar:/U/c/./bundle$

I would like it instead to retain 1 char for all dirnames unless it has a dot, in which case it would show two, like this:

chris@DeathStar:/U/c/.v/bundle$

Even better would be if I also have the home directory represented by a ~ like this:

chris@DeathStar:~/.v/bundle$

Any ideas?

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Chris
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  • Is it OK just putting the basename of the current working directory in the prompting instead of the whole directory, and use `pwd` command if you want to get the whole directory? That means use `\W` instead `\w`. This solution is simple and work for me. – Edw4rd Nov 16 '12 at 20:09

1 Answers1

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This seems to do the trick, adding an optional . to the capture:

PROMPT_COMMAND='pwd2=$(sed "s:\(\.\?[^/]\)[^/]*/:\1/:g" <<<$PWD)'
PS1='\u@\h:$pwd2\$ '

And for the 'even better':

PROMPT_COMMAND='pwd2=$(sed -e "s:$HOME:~:" -e "s:\(\.\?[^/]\)[^/]*/:\1/:g" <<<$PWD)'
PS1='\u@\h:$pwd2\$ '
Dennis Kaarsemaker
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  • hmmm...neither of these work on my system: the prompt shows the full dirnames in the path ... `chris@DeathStar:/Users/chris/db/personal$` – Chris Nov 16 '12 at 20:38
  • Hmm. Could be an incompatibility between gnu sed and osx sed. Don't have an osx machine to test on. – Dennis Kaarsemaker Nov 16 '12 at 20:40
  • Thank you! That pointed me in the right direction... installed gnu-sed and all it works! – Chris Nov 16 '12 at 23:36