文件操作 - un_blkid
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文件: /snap/core20/2769/usr/lib/cryptsetup/checks/un_blkid
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#!/bin/sh # this script depends on /sbin/blkid from the util-linux package # usage: un_blkid <device> <fs_type> # <device> may be any device that should be checked. # if no <fs_type> is given, the check fails for any valid filesystem # if <fs_type> is given, the check fails when a filesystem type <fs_type> # is found on the device. if test ! -x "/sbin/blkid"; then echo " - WARNING: blkid from util-linux is not available, impossible to run checks." exit 1 fi dev="$1" fs="$2" blkid="$(/sbin/blkid -o value -s TYPE -p -- "$dev")" # blkid output is empty if $dev has an unknown filesystem if [ -n "$blkid" ] && [ -z "$fs" ]; then echo " - The device $dev contains a filesystem type $blkid." exit 1 elif [ -n "$fs" ] && [ "$blkid" = "$fs" ]; then echo " - The device $dev contains a filesystem type $fs." exit 1 fi
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