Returns the absolute path to a command, using which if needed

get_absolute_path() { echo $1 | sed "s|^\([^/].*/.*\)|$(pwd)/\1|;s|^\([^/]*\)$|$(which -- $1)|;s|^$|$1|"; }
It will return the absolute location of the called a script. If is in $PATH, it will search it using which. You can combine this function with this other one: http://www.commandlinefu.com/commands/view/9252/readlink-equivalent-using-shell-commands-and-following-all-links, to get a way to know where is the real location of a called script: # Returns the realpath of a called command. whereis_realpath() { local SCRIPT_PATH=$(whereis $1); myreadlink ${SCRIPT_PATH} | sed "s|^\([^/].*\)\$|$(dirname ${SCRIPT_PATH})/\1|"; }
Sample Output
$ get_absolute_path ls
/bin/ls
$ cd /bin
$ get_absolute_path ./ls
/bin/ls

-4
By: keymon
2011-09-13 11:06:55

1 Alternatives + Submit Alt

What Others Think

I don't get the reason for this... "which" does the exact same here: ahu:~$ which ls /bin/ls or the type command: ahu:~$ type ls ls is /bin/ls
peshay · 352 weeks and 5 days ago
`whereis' is already a command: whereis ls ls: /bin/ls /usr/bin/ls /usr/X11R6/bin/ls /usr/bin/X11/ls /usr/X11/bin/ls /usr/man/man1/ls.1.gz /usr/share/man/man1/ls.1.gz /usr/X11/man/man1/ls.1.gz
h3xx · 352 weeks and 5 days ago
I changed the function name. which does the same? $ touch a_command.sh ; chmod +x a_command.sh $ which a_command.sh ./a_command.sh $ type a_command.sh a_command.sh is ./a_command.sh I am not getting the absolute path here. But you are right that you can do: which a_command.sh | sed "s|^./|$(pwd)|"
keymon · 351 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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