在Bash脚本中,要删除尾随子串并且不区分大小写,可以使用字符串操作和正则表达式的结合。 以下是一个示例的Bash脚本代码: 代码语言:bash 复制 #!/bin/bashstring="Hello World"substring="world"# 将字符串转换为小写lowercase_string=${string,,}# 将子串转换为小写lowercase_substring=${substring,,}# 使用...
_repeat() { #@ USAGE: _repeat string number _REPEAT=$1 while (( ${#_REPEAT} < $2 )) ## Loop until string exceeds desired length do _REPEAT=$_REPEAT$_REPEAT$_REPEAT ## 3 seems to be the optimum number done _REPEAT=${_REPEAT:0:$2} ## Trim to desired length } repeat() { ...
After deletion of shortest match from front: string.txt After deletion of shortest match from back: bash.string In the first echo statement substring ‘*.’ matches the characters and a dot, and # strips from the front of the string, so it strips the substring “bash.” from the variable...
myString="This:is:a:String" lastElement=$(echo "$myString" | tr ':' '\n' | tail -n 1) echo "The last element is: $lastElement" Output 1 2 3 The last element is: String The tr command in Bash is typically used for transforming and deleting characters in a string or a fil...
better to do the safe thing.(ASIDE:There's absolutely no value provided by EDOCX1 penalic 12 over EDOCX1 pensional 13 ausl except for consistence with cases where the brackets are necessary,either for a parameteralized expansion or concatentation with a following string containing characters in ...
EN#!/bin/sh foo() { local basedir=$1 local all_entries=`ls -c` ...
PROMPT_DIRTRIM If set to a number greater than zero, the value is used as the number of trailing directory components to retain when expanding the \w and \W prompt string escapes (see PROMPTING below). Characters removed are replaced with an ellipsis. PS1 The value of this parameter is ...
alphabetic characters. The return value is 0 if the string matches (==) or does not match (!=) the pattern, and 1 otherwise. Any part of the pattern may be quoted to force the quoted portion to be matched as a string. An additional binary operator, =~, is available, with the same...
Trim leading and trailing white-space from stringThis is an alternative to sed, awk, perl and other tools. The function below works by finding all leading and trailing white-space and removing it from the start and end of the string. The : built-in is used in place of a temporary ...
You can also use the hash to trim a string variable and remove some text from the beginning. This command creates a string variable calledthis_string. ✕Remove Ads In this example, we assign the text "Dave Geek!" to the variable. ...