shell sed .\{n\} ? --2 hang

1cpuer

1234567890: abcdef: titi
android: linux: shell: sed

1 提取第8，16字符
2 第8，16字符后加 okshell

最好用到.\{n\},不匹配字符串 如 sed 's/67890/678okshell/' file

jason680

$ awk '{print substr($0,8,16)}' FILE
890: abcdef: tit
: linux: shell:

butterflyswim

1. cut -c 8-16 file |sed 's/$/okshell/'

復(fù)制代碼

1cpuer

Administrator@idea-PC MSYS /usr/bin
$ sed 's/.\{8\}/& okshell /' e:/msys/cut1
01      dd
cut -f2- okshell  -d':' --output-delimiter='!' e:/msys/cut1
root:0 okshell :0:root:/root:/bin/bash
cut -s z okshell hushi
12345678 okshell 90: abcdef: titi
android: okshell  linux: shell: sed