linux中如何删除^M符号
作者：互联网
1、测试数据
root@DESKTOP-1N42TVH:/home/test2# ls outcome.map root@DESKTOP-1N42TVH:/home/test2# cat -A outcome.map ## 末尾多出^M 1^Is64199.1^I0^I55910^M$ 1^IOAR19_64675012.1^I0^I85204^M$ 1^IOAR19_64715327.1^I0^I122948^M$ 1^IOAR19_64803054.1^I0^I203750^M$ 1^IDU281551_498.1^I0^I312707^M$ root@DESKTOP-1N42TVH:/home/test2# sed -n l outcome.map ## \r为windows中换行符，\r等价于^M 1\ts64199.1\t0\t55910\r$ 1\tOAR19_64675012.1\t0\t85204\r$ 1\tOAR19_64715327.1\t0\t122948\r$ 1\tOAR19_64803054.1\t0\t203750\r$ 1\tDU281551_498.1\t0\t312707\r$
2、sed去除^M
root@DESKTOP-1N42TVH:/home/test2# ls outcome.map root@DESKTOP-1N42TVH:/home/test2# cat -A outcome.map 1^Is64199.1^I0^I55910^M$ 1^IOAR19_64675012.1^I0^I85204^M$ 1^IOAR19_64715327.1^I0^I122948^M$ 1^IOAR19_64803054.1^I0^I203750^M$ 1^IDU281551_498.1^I0^I312707^M$ root@DESKTOP-1N42TVH:/home/test2# sed 's/^M//' outcome.map | cat -A ##利用sed直接将^M替换为空，有的时候此方法不灵 1^Is64199.1^I0^I55910$ 1^IOAR19_64675012.1^I0^I85204$ 1^IOAR19_64715327.1^I0^I122948$ 1^IOAR19_64803054.1^I0^I203750$ 1^IDU281551_498.1^I0^I312707$ root@DESKTOP-1N42TVH:/home/test2# sed 's/\r//' outcome.map | cat -A ## 利用sed直接替换掉\r 1^Is64199.1^I0^I55910$ 1^IOAR19_64675012.1^I0^I85204$ 1^IOAR19_64715327.1^I0^I122948$ 1^IOAR19_64803054.1^I0^I203750$ 1^IDU281551_498.1^I0^I312707$
3、利用tr删除掉^M
root@DESKTOP-1N42TVH:/home/test2# ls outcome.map root@DESKTOP-1N42TVH:/home/test2# cat -A outcome.map 1^Is64199.1^I0^I55910^M$ 1^IOAR19_64675012.1^I0^I85204^M$ 1^IOAR19_64715327.1^I0^I122948^M$ 1^IOAR19_64803054.1^I0^I203750^M$ 1^IDU281551_498.1^I0^I312707^M$ root@DESKTOP-1N42TVH:/home/test2# sed -n l outcome.map 1\ts64199.1\t0\t55910\r$ 1\tOAR19_64675012.1\t0\t85204\r$ 1\tOAR19_64715327.1\t0\t122948\r$ 1\tOAR19_64803054.1\t0\t203750\r$ 1\tDU281551_498.1\t0\t312707\r$ root@DESKTOP-1N42TVH:/home/test2# cat outcome.map | tr -d "^M" | cat -A ##直接删除掉^M 1^Is64199.1^I0^I55910$ 1^IOAR19_64675012.1^I0^I85204$ 1^IOAR19_64715327.1^I0^I122948$ 1^IOAR19_64803054.1^I0^I203750$ 1^IDU281551_498.1^I0^I312707$ root@DESKTOP-1N42TVH:/home/test2# cat outcome.map | tr -d "\r" | cat -A ##直接删除掉\r 1^Is64199.1^I0^I55910$ 1^IOAR19_64675012.1^I0^I85204$ 1^IOAR19_64715327.1^I0^I122948$ 1^IOAR19_64803054.1^I0^I203750$ 1^IDU281551_498.1^I0^I312707$
4、利用dos2unix直接删除
a、安装dos2unix
root@DESKTOP-1N42TVH:/home/test2# ls outcome.map root@DESKTOP-1N42TVH:/home/test2# cat -A outcome.map 1^Is64199.1^I0^I55910^M$ 1^IOAR19_64675012.1^I0^I85204^M$ 1^IOAR19_64715327.1^I0^I122948^M$ 1^IOAR19_64803054.1^I0^I203750^M$ 1^IDU281551_498.1^I0^I312707^M$ root@DESKTOP-1N42TVH:/home/test2# dos2unix outcome.map -bash: /usr/bin/dos2unix: No such file or directory root@DESKTOP-1N42TVH:/home/test2# apt install dos2unix ## 安装dos2unix（ubuntu中） Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: java-common libavahi-client3 libavahi-common-data libavahi-common3 libcups2 liblcms2-2 libpcsclite1 Use 'apt autoremove' to remove them. The following NEW packages will be installed: dos2unix 0 upgraded, 1 newly installed, 0 to remove and 84 not upgraded. Need to get 374 kB of archives. After this operation, 1342 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu focal/universe amd64 dos2unix amd64 7.4.0-2 [374 kB] Fetched 374 kB in 3s (137 kB/s) Selecting previously unselected package dos2unix. (Reading database ... 59750 files and directories currently installed.) Preparing to unpack .../dos2unix_7.4.0-2_amd64.deb ... Unpacking dos2unix (7.4.0-2) ... Setting up dos2unix (7.4.0-2) ... Processing triggers for man-db (2.9.1-1) ... root@DESKTOP-1N42TVH:/home/test2# cat -A outcome.map 1^Is64199.1^I0^I55910^M$ 1^IOAR19_64675012.1^I0^I85204^M$ 1^IOAR19_64715327.1^I0^I122948^M$ 1^IOAR19_64803054.1^I0^I203750^M$ 1^IDU281551_498.1^I0^I312707^M$ root@DESKTOP-1N42TVH:/home/test2# dos2unix outcome.map ## 从dos系统转换到unix系统，也可以逆向转换，使用unix2dos outcome.map dos2unix: converting file outcome.map to Unix format... root@DESKTOP-1N42TVH:/home/test2# ls outcome.map root@DESKTOP-1N42TVH:/home/test2# cat -A outcome.map 1^Is64199.1^I0^I55910$ 1^IOAR19_64675012.1^I0^I85204$ 1^IOAR19_64715327.1^I0^I122948$ 1^IOAR19_64803054.1^I0^I203750$ 1^IDU281551_498.1^I0^I312707$
标签：map,test2,IOAR19,删除,符号,I0,DESKTOP,linux,outcome 来源： https://www.cnblogs.com/liujiaxin2018/p/15769227.html