Awesome

NAME

App::ChangeShebang - change shebang lines for relocatable perl

SYNOPSIS

> change-shebang /path/to/bin/script.pl

> head -3 /path/to/bin/script.pl
#!/bin/sh
exec "$(dirname "$0")"/perl -x "$0" "$@"
#!perl

DESCRIPTION

change-shebang changes shebang lines from

#!/path/to/bin/perl

#!/bin/sh
exec "$(dirname "$0")"/perl -x "$0" "$@"
#!perl

Why do we need this?

Let's say you build perl with relocatable enabled (-Duserelocatableinc). Then the shebang lines of executable scripts point at the installation time perl binary path.

So if you move your perl directory to other places, the shebang lines of executable scripts point at a wrong perl binary and we cannot execute scripts. Oops!

A solution of that problem is to replace shebang lines by

#!/bin/sh
exec "$(dirname "$0")"/perl -x "$0" "$@"
#!perl

which means that scripts will be executed by the perl located in the same directory.

AUTHOR

Shoichi Kaji skaji@cpan.org

COPYRIGHT AND LICENSE