概念:bash提供了多个字符串替换函数,如replace()、substr()等,可以根据不同的需求选择合适的函数来替换字符串内容。 优势:提供了更多灵活的字符串替换方式。 应用场景:根据具体需求选择合适的字符串替换函数。 示例代码: 示例代码: 以上是在bash中用自己的内容替换字符串的几种方法。根据具体的需求
BASH:replace text in files by sed #!/bin/sh TAG="aa:1234\/" DST="aa\/" for a in `find . -name '*.txt' -type f` do c=`cat ${a} | grep ${TAG}` reg=".*${TAG}.*" if [[ "${c}" =~ $reg ]] ; then cat ${a} | sed "s/${TAG}/${DST}/g" fi done...
5. Find and Replace String Values inside Bash Shell Script Replace only first match ${string/pattern/replacement} It matches the pattern in the variable $string, and replace only the first match of the pattern with the replacement. $catfirstmatch.sh#! /bin/bash filename="bash.string.txt"ech...
在Bash脚本中,Linux SED命令是一种非常强大的文本处理工具,可以用来对字符串进行删除、替换、插入等操作。要从字符串中删除特定的内容,可以使用以下语法: ```bash sed 's/要删除...
(function (file) { shell.sed('-i', 'build_version', 'v0.1.2', file); shell.sed('-i', /^.*remove_this_line.*$/, '', file); shell.sed('-i', /.*replace_line_with_macro.*\n/, shell.cat('macro.js'), file);});shell.cd('..'); # 除非另有说明,否则同步执行给定的...
/bin/bash # declare STRING variable STRING="Hello World" #print variable on a screen echo $STRING Navigate to a directory where your hello_world.sh is located and make the file executable: $ chmod +x hello_world.sh Now you are ready to execute your first bash script:...
alpha="This is a test string in which the word \"test\" is replaced." beta="${alpha/test/replace}" beta="${alpha//test/replace}" 1. 2. 3. 解释:用"replace"替换”test“。如果想替换字符串里所有的”test“,就使用 第三行的表达式。
13. Find and Replace String Another useful bash script for strings isfind and replace. Create a file namedfindreplace.sh: nano findreplace.sh Then paste in the following bash script: #!/bin/bash first="I drive a BMW and Volvo"
if [[ $var != *sub_string* ]]; then printf '%s\n' "sub_string is not in var." fi # 也可以在数组中运行 if [[ ${arr[*]} == *sub_string* ]]; then printf '%s\n' "sub_string is in array." fi使用case语句:case "$var" in *sub_string*) # Do stuff ;; *sub_string2...
Use regex on a stringThe result of bash's regex matching can be used to replace sed for a large number of use-cases.CAVEAT: This is one of the few platform dependent bash features. bash will use whatever regex engine is installed on the user's system. Stick to POSIX regex features if...