第一种方法：
grep:
[root@hdp05 src]# grep -vxFf leadering.txt leaderNum.txt 1003 [root@hdp05 src]# cat leadering.txt 1004 1007 [root@hdp05 src]# cat leaderNum.txt 1003 1004 1007
sort:
[root@hdp05 src]# sort leaderNum.txt leadering.txt leadering.txt | uniq -u 1003