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#!/bin/bash
# $0 is visible globally, in functions too
# apparently su -c accepts a command and 1 argument, hence we export
CMDL_ARGS=$@
export CMDL_ARGS
chk_root()
{
if [[ ! $(id -u) -eq 0 ]]; then
echo "root user required";
# exec works similar to fork()
exec su -c "\"$0\" $CMDL_ARGS"
exit $?
fi
}
chk_root $@
if [[ $(id -u) -eq 0 ]]; then
echo "you're root"
fi
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