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I just found on http://www.bluetail.com/~joe/escript.html an interesting approach to write the "#!" line of a script. The idea is to call up /usr/bin/env, and then it starts the script-interpreter with the command line arguments: #! /usr/bin/env script-interpreter ... The advantage I can see is that there is no need to give an absolute path for the script-interpreter (PATH is searched), and /usr/bin/env may be a more "standard" path than say /usr/local/bin/script-interpreter . It is also probably faster than the /bin/sh trampoline. Anybody have experience, or comments about this? Is /usr/bin/env "standard" or POSIX? Marc