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#!/bin/sh
declare -r OS_TYPE=$(case "$OSTYPE" in
(solaris*) echo solaris;;
(darwin*) echo osx;;
(linux*) echo linux;;
(bsd*) echo bsd;;
(*) echo unknown;;
esac)
is_solaris () { [ $OS_TYPE == 'solaris' ]; }
is_osx () { [ $OS_TYPE == 'osx' ]; }
is_linux () { [ $OS_TYPE == 'solaris' ]; }
is_bsd () { [ $OS_TYPE == 'bsd']; }
is_unknown () { [ $OS_TYPE == 'unknown' ]; }