文件passwd:
s2002408030068:x:527:527::/home/dz02/s2002408030068:/bin/pw
s2002408032819:x:528:528::/home/dz02/s2002408032819:/bin/pw
s2002408032823:x:529:529::/home/dz02/s2002408032823:/bin/pw
文件shadow:
s2002408030068:$1$d8NwFclG$v4ZTacfR2nsbC8BnVd3dn1:12676:0:99999:7:::
s2002408032819:$1$UAvNbHza$481Arvk1FmixCP6ZBDWHh0:12676:0:99999:7:::
s2002408032823:$1$U2eJ3oO1$bG.eKO8Zupe0TnyFhWX9Y.:12676:0:99999:7:::
用shadow文件中的密文部分替换passwd中的"x",生一个新passwd文件,如下所示
s2002408030068:$1$d8NwFclG$v4ZTacfR2nsbC8BnVd3dn1:527:527::/home/dz02/s2002408030068:/bin/pw
s2002408032819:$1$UAvNbHza$481Arvk1FmixCP6ZBDWHh0:528:528::/home/dz02/s2002408032819:/bin/pw
s2002408032823:$1$U2eJ3oO1$bG.eKO8Zupe0TnyFhWX9Y.:529:529::/home/dz02/s2002408032823:/bin/pw
awk 'BEGIN{OFS=FS=":"} NR==FNR{a[$1]=$2}NR>FNR{$2=a[$1];print}' shadow passwd
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