国外建设网站,jsp网站开发工具,新手做网站选材,建设网站主机要买什么的好Linux Shell学习#xff1a;uniq命令使用方法介绍uniq命令的作用#xff1a;显示唯一的行#xff0c;对于那些连续重复的行只显示一次#xff01;接下来通过实践实例说明. [关键字] Linux Shell uniq 看test.txt文件的内容#xff0c;可以看到其中的连续重复行 [roothexu.… Linux Shell学习uniq命令使用方法介绍uniq命令的作用显示唯一的行对于那些连续重复的行只显示一次接下来通过实践实例说明. [关键字] Linux Shell uniq 看test.txt文件的内容可以看到其中的连续重复行 [roothexu.org ~]# cat test.txt boy took bat home boy took bat home girl took bat home dog brought hat home dog brought hat home dog brought hat home uniq命令不加任何参数仅显示连续重复的行一次 [roothexu.org ~]# uniq test.txt boy took bat home girl took bat home dog brought hat home -c 参数显示文件中每行连续出现的次数。 [roothexu.org ~]# uniq -c test.txt 2 boy took bat home 1 girl took bat home 3 dog brought hat home -d选项仅显示文件中连续重复出现的行。 [roothexu.org ~]# uniq -d test.txt boy took bat home dog brought hat home -u选项显示文件中没有连续出现的行。 [roothexu.org ~]# uniq -u test.txt girl took bat home 忽略每行的前2个字段忽略第二个空白字符和第三个字段的首字符结果at home [roothexu.org ~]# uniq -f 2 -s 2 test.txt boy took bat home 忽略每行的第一个字段这样boy girl开头的行看起来是连续重复的行。 [roothexu.org ~]# uniq -f 1 test.txt boy took bat home dog brought hat home
