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I submitted a command like this without $0 if $BASH_SOURCE is unset. Therefor, it did only work when using ./script, not using 'sh script'. This version handles both, and will set $mydir in a script to the current working directory. It also works on linux, osx and probably bsd.
There are 4 alternatives - vote for the best!
Invoked from within a shell script, this will print the directory in which the script resides. Doesn't depend on external tools, /proc/self/*, etc.. (`echo` is a shell builtin.) To see the *current working* directory of a script, use `pwd`.
This is an alternative to another command using two xargs. If it's a command you know there's only one of, you can just use:
ls -l /proc/$(pgrep COMMAND)/cwd
The pwdx command reports the current working directory of a process or processes.
If you can do better, submit your command here.
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