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 $string instead of 20(the value of string) ...
I need to assign to a variable the current datetime string in isoformat like the following: What I'm doing is: But this is going to print the string with utc tz: Not clear yet to me what's the clean w...CSS Border Shadow On One Side Of the Border Hi guys i need to make a ...
在Tcl中,您可以使用exec命令调用sed命令行工具来执行sed操作 代码语言:javascript 复制 #!/usr/bin/env tclsh # 定义一个函数,使用sed命令替换文件中的文本 proc sed_replace {file_path search_pattern replace_pattern} { set cmd "sed -i \"s/${search_pattern}/${replace_pattern}/g\" ${file_path}...
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...
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...
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...
替换命令中还有一个很重要的部分——replacement(替换内容),即将匹配的部分替换成replacement。在replacemnt部分中也有几个特殊的元字符,它们分别是: ● &: 被pattern匹配的内容; ●\num: 被pattern匹配的第num个分组(正则表达式中的概念,\(..\)括起来的部分称为分组; ...
Replaces the contents of the hold space with the contents of the pattern space. (2)H Appends the contents of the pattern space to the hold space. (1)i\ Text Writes the Text variable to standard output before reading the next line into the pattern space. ...
[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...