Show full path followed by a command

perl -le 'chomp($w=`which $ARGV[0]`);$_=`file $w`;while(/link\b/){chomp($_=(split/`/,$_)[1]);chop$_;$w.=" -> $_";$_=`file $_`;}print "\n$w";' COMMAND_NAME
This will show you any links that a command follows (unlike 'file -L'), as well as the ultimate binary or script. Put the name of the command at the very end; this will be passed to perl as the first argument. For obvious reasons, this doesn't work with aliases or functions.
Sample Output
$ perl -le 'chomp($w=`which $ARGV[0]`);$_=`file $w`;while(/link\b/){chomp($_=(split/`/,$_)[1]);chop$_;$w.=" -> $_";$_=`file $_`;}print "\n$w";' vi          

/usr/bin/vi -> /etc/alternatives/vi -> /usr/bin/vim.gtk

0
By: dbbolton
2010-07-30 19:26:35

What Others Think

This is why I don't write Perl.
kaedenn · 424 weeks and 4 days ago
@kaedenn so write an alternative in bash. I purposely made the code condensed to fit within commandlinefu's char limit. A better-formed version would look like this: http://gist.github.com/503684
dbbolton · 424 weeks and 3 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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