1、测试数据
[root@centos79 test]# cat -A a.txt SUN08^ISUN09^ISUN10^M$ dddd^I33333^Icdddd^M$ dddd^I11111^I55555^M$
2、dos2unix删除
[root@centos79 test]# cat a.txt SUN08 SUN09 SUN10 dddd 33333 cdddd dddd 11111 55555 [root@centos79 test]# dos2unix a.txt -bash: /usr/bin/dos2unix: No such file or directory
[root@centos79 test]# dnf install dos2unix -y Last metadata expiration check: 1:51:03 ago on Sun 18 Jul 2021 09:26:03 AM CST. Dependencies resolved. ===================================================================================================================================== Package Arch Version Repository Size ===================================================================================================================================== Installing: dos2unix x86_64 6.0.3-7.el7 base 74 k Transaction Summary ===================================================================================================================================== Install 1 Package Total download size: 74 k Installed size: 190 k Downloading Packages: dos2unix-6.0.3-7.el7.x86_64.rpm 126 kB/s | 74 kB 00:00 ------------------------------------------------------------------------------------------------------------------------------------- Total 50 kB/s | 74 kB 00:01 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : dos2unix-6.0.3-7.el7.x86_64 1/1 Verifying : dos2unix-6.0.3-7.el7.x86_64 1/1 Installed: dos2unix-6.0.3-7.el7.x86_64 Complete!
[root@centos79 test]# cat -A a.txt SUN08^ISUN09^ISUN10^M$ dddd^I33333^Icdddd^M$ dddd^I11111^I55555^M$ [root@centos79 test]# dos2unix a.txt dos2unix: converting file a.txt to Unix format ... [root@centos79 test]# cat -A a.txt SUN08^ISUN09^ISUN10$ dddd^I33333^Icdddd$ dddd^I11111^I55555$
3、sed命令删除
[root@centos79 test]# cat -A a.txt SUN08^ISUN09^ISUN10^M$ aaaaa^Ieeeee^Ikkkkk^M$ aaaaa^Iddddd^I88888^M$ [root@centos79 test]# sed 's/^M//g' a.txt -i [root@centos79 test]# cat -A a.txt SUN08^ISUN09^ISUN10$ aaaaa^Ieeeee^Ikkkkk$ aaaaa^Iddddd^I88888$
4、vi/vim命令删除
命令模式下输入：1,$ s/^M//g
5、tr删除
[root@centos79 test]# cat -A a.txt SUN08^ISUN09^ISUN10^M$ aaaaa^Ieeeee^Ikkkkk^M$ aaaaa^Iddddd^I88888^M$ [root@centos79 test]# cat a.txt | tr -d "\r" | cat -A SUN08^ISUN09^ISUN10$ aaaaa^Ieeeee^Ikkkkk$ aaaaa^Iddddd^I88888$
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