linux系统中如何删除第一行、前两行，最后一行、最后两行 |
您所在的位置：网站首页 › linux删除几行到几行的命令 › linux系统中如何删除第一行、前两行，最后一行、最后两行 |
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1、测试数据如下： [root@PC3 test]# cat a.txt 1 Beijing 2003 2 Beijing 2004 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008 12 Beijing 2007
2、删除第一行 [root@PC3 test]# sed 1d a.txt 2 Beijing 2004 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008 12 Beijing 2007[root@PC3 test]# tail -n +2 a.txt 2 Beijing 2004 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008 12 Beijing 2007
3、删除前两行 [root@PC3 test]# sed 1,2d a.txt 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008 12 Beijing 2007[root@PC3 test]# tail -n +3 a.txt 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008 12 Beijing 2007
4、删除最后一行 [root@PC3 test]# sed '$d' a.txt 1 Beijing 2003 2 Beijing 2004 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008[root@PC3 test]# head -n -1 a.txt 1 Beijing 2003 2 Beijing 2004 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007 11 Beijing 2008
5、删除最后两行 [root@PC3 test]# head -n -2 a.txt 1 Beijing 2003 2 Beijing 2004 3 Beijing 2005 4 Beijing 2006 5 Beijing 2007 6 Beijing 2008 7 Beijing 2007 8 Beijing 2005 9 Beijing 2006 10 Beijing 2007
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