问如何使用sed替换配置文件的变量？EN在 Linux 系统中，sed 是一个非常有用的文本处理工具，它可以用于在文件中进行字符串替换操作。sed 是流编辑器（stream editor）的缩写，它可以对文本进行逐行处理，包括查找和替换特定的字符串。本文将详细介绍如何使用 sed 命令在文件中进行字符串替换操作。
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 ...
$fixed_filename 是未引用的,这意味着要折叠空间的单词分裂。引用它为保存空格的"$fixed_filename" Line 21: fixed_filename=$(echo $fixed_filename | sed s/$bad/${char_map[$bad]}/g) ^-- SC2001 (style): See if you can use ${variable//search/replace} instead. ^-- SC2086 (info): ...
|\b|字符（\w）和非字符锚之间的边界锚| |(|分组并捕获到\1：| |sga_target=| 'sga_target='...
sed -i "s/$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...
The sed substitute command changes every line that starts with a "#" into a blank line. Grep was used to filter out (delete) empty lines. Wc counts the number of lines left. Sed has more commands that make grep unnecessary. And grep -c can replace wc -l. I'll discuss how you can...
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...
20. sed substitution command: s/regular expression/replacement/flag. flag can be n(only replace the nth occurence of the pattern), g(replace every occurence of the pattern, p(print out the pattern space), w(write to a file). If we need to replace a pattern with a new line, then "...
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...