linux中如何将多个连续的tab键替换为一个tab键
1、测试数据
[root@centos7 test]# ls test.txt [root@centos7 test]# cat test.txt ## 测试数据 k m w g h g u y [root@centos7 test]# sed -n l test.txt ## 查看tab键 k\t\t\tm$ w\t\tg\t\t\th$ g\tu\ty$
2、将多个tab键替换为一个tab键
[root@centos7 test]# ls test.txt [root@centos7 test]# sed -n l test.txt k\t\t\tm$ w\t\tg\t\t\th$ g\tu\ty$ [root@centos7 test]# sed 's/[\t]\+/\t/' test.txt | sed -n l k\tm$ w\tg\t\t\th$ g\tu\ty$ [root@centos7 test]# sed 's/[\t]\+/\t/g' test.txt | sed -n l ## 将多个连续的tab键替换为一个tab键 k\tm$ w\tg\th$ g\tu\ty$
3、
[root@centos7 test]# ls test.txt [root@centos7 test]# cat test.txt k m w g h g u y [root@centos7 test]# sed -n l test.txt k\t\t\t\tm$ w\t\tg\t\t\th$ g u\t\t\ty$ [root@centos7 test]# sed 's/\t\+/\t/' test.txt | sed -n l k\tm$ w\tg\t\t\th$ g u\ty$ [root@centos7 test]# sed 's/\t\+/\t/g' test.txt | sed -n l k\tm$ w\tg\th$ g u\ty$
4、\s: 同时代表空格和tab键
[root@centos7 test]# ls test.txt [root@centos7 test]# cat test.txt k m w g h g u y [root@centos7 test]# sed -n l test.txt k\t\t\t\tm$ w\t\tg\t\t\th$ g u\t\t\ty$ [root@centos7 test]# sed 's/\s\+/\t/' test.txt | sed -n l k\tm$ w\tg\t\t\th$ g\tu\t\t\ty$ [root@centos7 test]# sed 's/\s\+/\t/g' test.txt | sed -n l k\tm$ w\tg\th$ g\tu\ty$