2. Two Methods of Running a Bash Script One of the common methods of running a Bash script is to execute it from a shell session by calling the script filename prefixed with its filesystem path.For example, to execute a script with the filename ofmyscript.shlocated at the current worki...
If you can enter commands into the shell, you can write shell scripts (also known as Bourne shell scripts). A shell script is a series of commands written in a file; the shell reads the commands from the file just as it would if you typed them into a terminal. ...
This article is a short tutorial on the various methods of getting the exit status while writing commands for Bash, or for writing a Bash script.
To terminate the parent script from within a subshell, we can use thekillcommand together with the parent script’s process ID(PID). By identifying the subshell’sPID, you can use thekillcommand to end it explicitly: #!/bin/bash echo "Parent script starts" ( # Subshell echo "Subshell sta...
/bin/bashdir=/root/shell grep -e '^ .*cp ' -e '^cp' $dir/* >Cp_Check.txt if [ ! -s Cp_Check.txt ] then return 0 fi#直接执行脚本是会报错的,return仅用于函数中:#return: can only`return' from a function or sourced script...
#!/bin/bash if [ $# -ne 1 ] then echo "please input parameter" return 1 fi 上面的脚本如果直接执行则会报如下错误: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 return: can only`return' from a function or sourced script 但是如果使用 . 或 souce的方式被包含到父Shell中,则可以正常运...
# Main script if [ $# -ne 1 ]; then echo "Usage: $0 <process_name>" exit 1 # Exit with code 1 indicating incorrect usage fi process_name="$1" check_process "$process_name" Output: ad@DESKTOP-3KE0KU4:~$ ./test1.sh bash ...
/bin/bash dir=/root/shell grep -e'^ .*cp '-e'^cp'$dir/* >Cp_Check.txt if[ ! -s Cp_Check.txt ] then return0 fi 直接执行脚本是会报错的 return: can only`return' from a function or sourced script 当前用source或.(点)执行。
在shell下可以用 $? 这个变量得到“最新”的一个 return value,即刚结束的那个形成传回的值。Return Value(RV) 的取值为 0-255 之间,由程序(或script)的作者自行定义(可以方便 command return status function false 原创 突然想起高中 2014-01-22 17:14:44...
比如shift 3表示原来的$4现在变成$1,原来的$5现在变成$2等等,原来的$1、$2、$3丢弃,$0不移动。不带参数的shift命令相当于shift 1。 #测试 shift命令(x_shift3.sh) [root@linux-server script]# cat x_shift3.sh #!/bin/bash shift linux