list) 匹配所给模式零次或一次出现 *(pattern-list) 匹配所给模式零次或多次出现 +(pattern-list) 匹配所给模式一次或多次出现 @(pattern-list) 准确匹配所给模式之一 !(pattern-list) 任何除了匹配所给模式之一的字串 Quote Removal 经过前面的扩展之后,所有未引用的字符 \, ’, 以及并非上述扩展结果的字符 "...
progname=${0##*/} ## Get the name of the script without its path ## Default values verbose=0 filename= ## List of options the program will accept; ## those options that take arguments are followed by a colon optstring=f:v ## The loop calls getopts until there are no more options...
/bin/bashset-eSCRIPT_DIR="$( cd "$( dirname"${BASH_SOURCE[0]}")" && pwd )"# get UBUNTU_CODENAME, ROS_DISTRO, REPO_DIR, CATKIN_DIRsource $SCRIPT_DIR/identify_environment.bashcd"$HOME/catkin_ws/src"rm CMakeLists.txtgit clone https://gith...
Arrays in Bash are ordered lists of values. You can create a list from scratch by assigning it to a variable name. Lists are created with parentheses (( )) with a space separating each element in the list. Let’s make a list of the plagues of Egypt: plagues=(blood frogs lice flies ...
Lists 序列 list(序列)是一個或多個管道,用操作符 ;, &, &&,或 ⎪⎪ 分隔的序列, 並且可以選擇用 ;, &,或 <newline>新行符 結束. 這些序列操作符中, && 和⎪⎪ 優先級相同,其次是 ; 和&, 它們的優先級是相同的。 序列中可以有一個或多個新行符來分隔命令,而不是使用分號分隔。 如果一...
Lists 序列 list(序列)是一個或多個管道,用操作符 ;, &, &&,或 ⎪⎪ 分隔的序列, 並且可以選擇用 ;, &,或 <newline>新行符 結束. 這些序列操作符中, && 和⎪⎪ 優先級相同,其次是 ; 和&, 它們的優先級是相同的。 序列中可以有一個或多個新行符來分隔命令,而不是使用分號分隔。 如果一...
中添加自动重启WEB服务实现自动释放内存(linux) wdcp系统支持大小写路径方法 Linux下通过 rm -f 删除大量文件时报错:Argument list too long 有哪些常见的虚拟主机管理系统 ISAPI 筛选器的介绍 云服务器 ECS Linux下使用 script 命令记录用户操作行为 apche启动错误|httpd.pid overwritten — Unclean shutdown of ...
(consumer_command)# >(command) produces a file descriptor to write data to command.ls>>(cat)# use the output of the ls command as the input of the cat command and output the list of files in the current directory.ls>>(greptxt)# use the output of the ls command as the input of ...
Example-4: Using command output as the list Any bash command output can be used in the ‘for’ loop by using backtick(`). Create a file named ‘forloop4.sh’ with the following script. Here, `ls *.txt` command is used in the loop. This command will generate a list of the text...
The return status is the exit status of the last command executed. AND and OR lists are sequences of one of more pipelines sep- arated by the && and || control operators, respectively. AND and OR lists are executed with left associativity. An AND list has the form command1 && command...