{#str}-3}" 123abc 从右边截取 ${string:空格 -lenth} 截取字符串...普通替换 ${string/match_string/replace_string}:将 string 中第一个 match_string 替换成 replace_string ${string/...[user@host dir]$ echo "${str/123/r}" rabc123 [
我一直在尝试使用具有多行字符串的环境变量替换/添加yaml中字段的值,使用以下语法 multi string"sed-i -e "s/^\(\s*key-in-yaml\s*:\s*\).*/\1 $replacewith/" somefile.yam 浏览187提问于2021-05-17得票数 1 3回答 从文件中获取值并将其保存到其他文件的Shell脚本 ...
can anyone use a variable string=20 and then use sed to get the job done I have tried sed but I have two problems 1- sed print the result on STDOUT but doesnot change the file! 2-it replace 10 with $string instead of 20(the value of string) Thanks in advance FatimaShy...
I need to assign to a variable the current datetime string in isoformat like the following: What I'm doing is: But this is going to print the string with utc tz: Not clear yet to me what's the clean w...CSS Border Shadow On One Side Of the Border Hi guys i need to make a ...
sed -i "s/$word_to_replace/$replacement/g" example.txtCopy The command consists of: $word_to_replace. The shell variable that holds the word or string to be replaced (in this case,foo). $replacement. The shell variable that holds the word or string to replace the original with (in ...
基于@mklement0在本线程中的回答，以下工具将使用sed和bash将任何单行字符串（与regexp相反）替换为任何...
How can you put the string you found in the replacement string if you don't know what it is? The solution requires the special character "&." It corresponds to the pattern found. sed 's/[a-z]*/(&)/' <old >new You can have any number of "&" in the replacement string. You...
[2addr]y/string1/string2/ Replace all occurrences of characters instring1in the pattern space with the corresponding characters fromstring2. Any character other than a backslash or newline can be used instead of a slash to delimit the strings. Withinstring1andstring2, a backslash followed by...
sed可以使用另一个字符串来替换匹配模式.模式可以是简单的字符串或正则表达式sed's/pattern/replace_string/'file示例: [root@rwwh rh]#cat/etc/passwd|cut-d : -f1,3|sed's/:/ UID :/g'root UID :0bin UID :1daemon UID :2adm UID :3lpUID :4syncUID :5①使用-i选项使得用修改后的数据替换原...
I want to replace the value of a variable 'TIMEZONE' with the other string, for that I tried to use 'sed', but no success, please help .#!/bin/bashCLOCK=/etc/sysconfig/clockTIMEZONE=$(grep ^TIMEZONE $CLOCK)if [ $TIMEZONE != TIMEZONE=\"Etc/GMT-5\" ]; then...