Underscore in rename command (Perl and Unix shell)

问题

I'm trying to replace all _ underscore character by - hyphen character in all file names .mat inside one folder. I type different versions unsuccessfully of:

rename -f 'w/_/-' *.mat

Can someone explain to me what is wrong?

回答1:

If you're using a Perl-based rename (as your tags suggest) then w isn't a Perl regex operation.

rename -f 's/_/-/g' *_*.mat

回答2:

I cannot fathom whether you are using a shell rename or the Perl rename: I can't understand your command in either context.

A Perl command-line script to rename all *.mat files in the current directory looks like this

perl -e 'do { (my $f = $_) =~ tr/_/-/; rename $_, $f } for glob "@ARGV"' *.mat

来源：https://stackoverflow.com/questions/10055412/underscore-in-rename-command-perl-and-unix-shell