Dog Walker wrote:
I want to prepend a directory to my PATH in my $HOME/.bashrc and export the
result. But I only want it to happen once: iow, if a directory I want
prepended is already in the PATH, do not prepend it again.
Something like:
if "/home/dw/bin" not in $PATH ; then
PATH=/home/dw:$PATH
export PATH
fi
The questions are: Is this the way one guards against multiple additions in
subshells? Is there a way to check for a substring?
Hi, DW:
-----
#!/bin/sh
#
# file /usr/local/bin/phwb.sh
#
# This prepends "/home/dw/bin/" to $PATH
PATH=/home/dw/bin:$PATH
export PATH
#end
-----
>touch /home/dw/bin/phwb.sh
>chmod +x /home/dw/bin/phwb.sh
> phwb.sh
If there is already a path to /home/dw/bin,
then the 0 byte file /home/bin/dw/phwb is executed.
else: /usr/local/bin/phwb.sh is executed.
HTH, Chuck
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs
