#示例一:使用文件中的y作为rm命令的输入 [root@xuzhichao ~]# rm f1 rm: remove regular empty file 'f1'? y [root@xuzhichao ~]# echo "y" > y.txt [root@xuzhichao ~]# rm f2 < y.txt rm: remove regular empty file 'f2'? #示例二:利用标准输入,备份文件 [root@xuzhichao ~]# echo "...
清单7-5。upword,将单词转换成大写 _upword() #@ USAGE: upword STRING { local word=$1 while [ -n "$word" ] ## loop until nothing is left in $word do to_upper "$word" _UPWORD=$_UPWORD$_UPR word=${word#?} ## remove the first character from $word done } upword() { _up...
[:space:]]}"}" # remove trailing whitespace characters echo -n "$var" } trim() { local var=$@ var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters echo -n "$var" } ...
## [p[urge] [customdir]] Remove Arch Linux. elif [[ "${1//-}" = [Pp]* ]] then printf "\\nSetting mode to purge.\\n" _ARG2DIR_ "$@" _RMARCHQ_ ## [ref[resh] [customdir]] Refresh the Arch Linux in Termux PRoot scripts created by TermuxArch and the installation...
(test suite): Remove Bash::Completion.3pm.gz from git, create on the fly (52d05a6) (test suite): Fix fallout from fec077d555f112b9f455c45860f90a3b47392fcf (6170f07) tipc: suppress tipc error messages (83f78d2) tipc: handle complete words without trailing space (1e778fc) tipc: fix...
e Remove all but the trailing suffix. t Remove all leading pathname components, leaving the tail. p Print the new command but do not execute it. q Quote the substituted words, escaping further sub stitutions. x Quote the substituted words as with q, but break into words at blanks ...
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: $new_string" Outpu...
# This works fine PROMPT_COMMAND=":; " # Error when more than one space. PROMPT_COMMAND=":; " # or when using newline PROMPT_COMMAND=":"$'\n' # syntax error near unexpected token `;' Patch # kitty.bash # Remove all trailing whitespace chars PROMPT_COMMAND="${PROMPT_COMMAND%"${...
文件被执行. 并从/etc/profile.d 目录的配置文件中搜集 shell 的设置。 /etc/bashrc: 为每一个运行 bash shell 的用户执行此文件.当 bash shell 被打开时, 该文件被读取。 ~/.bash_profile: 每个用户都可使用该文件输入专用于自己使用的 shell 信息,当 ...
${parameter%word} ${parameter%%word} GNU Bash-4.1 Last change: 2009 December 29 33 User Commands BASH(1) Remove matching suffix pattern. The word is expanded to produce a pattern just as in pathname expansion. If the pattern matches a trailing portion of the expanded value of parameter, ...