[Gllug] Stripping whitespace in bash script
Tethys
sta296 at astradyne.co.uk
Sat Aug 12 15:57:48 UTC 2006
Alex Sayle writes:
> zsh$setopt extendedglob
> zsh$word="some railing spaces "
> zsh$echo ":${word//% ##/}:"
> :some railing spaces:
>
>which matches one of more space from the end of the value, it does
>however need the extendedglob feature turned on to work.
Bah! I knew I should have been able to do it with extended globbing
in bash, without resorting to regexp matching, but it was 3am, and I
couldn't think straight. In the cold light of day:
leto:~% word="some trailing spaces "
leto:~% shopt -s extglob
leto:~% echo ":${word/%*( )}:"
:some trailing spaces:
Or if your whitespace might contain tabs as well as spaces:
leto:~% word="some trailing spaces "
leto:~% shopt -s extglob
leto:~% echo ":${word/%*([[:blank:]])}:"
:some trailing spaces:
Tet
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