example14.77

来自「UNIX+shell范例精解（第4版）代码」· 77 代码 · 共 7 行

eval `/usr/bin/id | /usr/bin/sed 's/[^a-z0-9=].*//'`
if [ "${uid:=0}" -ne 0 ]
then
	echo $0: Only root can run $0
	exit 2
fi