How a script know his own name in bash?

Question

I launch script.sh and inside it i want to know what is his name

Is there a standard procedure to know the scripts name ? the idea is to be able to extract the name from teh full path + name contained in $0

Thanks

Or are you asking about dereferencing symlinks (perhaps with `readlink`)? — Cascabel, May 10 '10 at 18:07
there are many ways to extract the file name from the full path like using basename,cut,awk etc. — Vijay, May 11 '10 at 12:36
see also: http://stackoverflow.com/questions/192319/how-do-i-know-the-script-file-name-in-a-bash-script and note that $0 will pull the parent name if you exec the script with source — iletras, Nov 16 '16 at 19:12

score 11 · Answer 1 · edited May 10 '10 at 18:17

11

Yes, $0 will always contain the name of the script. Use basename to extract the name.

basename /some/really/long/dir/path/myscripts/coolscript.sh will print coolscript.sh

So in your script, you could do this:

my_scriptname="$(basename $0)"

edited May 10 '10 at 18:17

Cascabel

answered May 10 '10 at 18:09

seamus

1

This `my_scriptname=$(basename "$0")` would be better. – Johann Chang Sep 29 '16 at 06:17

Dennis Williamson · Answer 2 · 2010-05-11T12:27:21.167

3

script="${0##*/}"

Edit:

This does the same thing as basename $0. It strips off the last slash and everything before it from $0 using Bash's brace expansion.

edited May 11 '10 at 12:27

answered May 10 '10 at 19:28

Dennis Williamson

Vincent Robert · Answer 3 · 2010-05-11T08:34:00.543

1

basename $0 will give you the script name

edited May 11 '10 at 08:34

answered May 10 '10 at 18:07

Vincent Robert

2

`basename` doesn't strip extensions unless you ask it to. – Cascabel May 10 '10 at 18:08

3 Answers3