Use the parameter expansion with regex to remove the special characters from a string in Bash. Use Parameter Expansion 1 2 3 4 5 6 #!/bin/bash string="Hello World! This is a test string." new_string="${string//[^[:alnum:]]/""}" echo "The Modified String: $new_string" Outpu...
Use the tr command to remove the new line from a string. The tr command is used for character translation or deletion.
Use thesedCommand to Remove the First Character From the String in Bash In Bash, you can delete the initial character of a string using thesedcommand, and we can use thes(substitute) command with the^(start of line) regular expression. Thescommand enables us to look for a pattern in a...
1 Sed remove text to text except last line 0 how to delete the last line in file starting with string in unix 0 Remove last character from a file in unix 3 Remove all lines except the last which start with the same string 0 How to delete a comma from every line of a file e...
# Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 done printf '%s\n' "${!tmp_array[@]}" } 用法示例: $ remove_array_dups 1 1 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 ...
{OPTARG#"$opt"}" # remove "=" from long option argument OPTARG="${OPTARG#=}" # set variable name opt=opt_$opt # short option without argument uses long option name as variable name elif [[ "${options[$opt]+x}" ]] && [[ "${options[$opt]}" ]]; then opt=opt_${options...
:d Remove the current file from the list of files. t Go to the next tag, if there were more than one matches for the current tag. See the -t option for more details about tags. T Go to the previous tag, if there were more than one matches for the current tag. ...
# Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 done printf '%s\n' "${!tmp_array[@]}" } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 用法示例: ...
remove_array_dups() {# Usage: remove_array_dups "array"declare-A tmp_arrayforiin"$@";do[[$i]] && IFS=" "tmp_array["${i:- }"]=1doneprintf'%s\n'"${!tmp_array[@]}"} 用法示例: $remove_array_dups1122333334444455555512345$arr=(red red green blue blue)$remove_array_dups"${arr[...
alias [alias-name[=string]...] 如何列出 bash 别名 输入下面的alias 命令: alias 结果为: alias ..='cd ..' alias amazonbackup='s3backup' alias apt-get='sudo apt-get' ... alias命令默认会列出当前用户定义好的别名。 如何定义或者创建一个 bash shell 别名 ...