WebSep 14, 2024 · I tell the sleep command to take a break for 10 seconds. When ten seconds has come and gone, the test in the while block is run again. Linux shell script while loop and sleep example. If you ever wanted to write a while loop in the Bourne shell, I hope this serves as a simple example. Please note that it is very easy to create an infinite loop ... WebAug 24, 2015 · spinner ping google.com echo "ping exited with exit code $?" spinner sleep 10 echo "sleep exited with exit code $?" It has 12 themes and picks one randomly. #!/bin/bash # Shows a spinner while another command is running. Randomly picks one of 12 spinner styles. # @args command to run (with any parameters) while showing a …
シェルスクリプト wait コマンド - Qiita
WebJun 23, 2024 · When you execute a command in Linux, it generates a numeric return code. This happens whether you're running the command directly from the shell, from a script, or even from an Ansible playbook. You can use those return codes to handle the result of that command properly. What the return codes mean WebFeb 20, 2024 · sleep is a command-line utility that allows you to suspends the calling process for a specified time. In other words, the sleep command pauses the execution of the next command for a given number of seconds.. The sleep command is useful when used within a bash shell script, for example, when retrying a failed operation or inside a … solve r a 2t
Shell Script Sleep One of the Most Powerful Commands in Bash …
WebJan 8, 2024 · Take a look at this sleep 500 process. It has a PID of 23990 and a default nice level of 0. [tcarrigan@localhost ~]$ ps -o pid,comm,nice 23990 PID COMMAND NI 23990 sleep 0. If I wanted to make that … WebMar 14, 2024 · Shell脚本的语法基于Bash、sh、csh和其他shell环境。 在编写Shell脚本时，需要注意以下几点: 1. ... 示例代码如下： ``` #!/bin/bash expect << EOF spawn some_command expect "password:" send "mypassword\n" expect eof EOF sleep 5 echo "The command has finished executing." ``` 在上面的示例中，使用expect命令 ... WebThe following example executes a command every so often: example% while true do command sleep 37 done. Example 3 Suspending Command Execution Forever. The following example suspends command execution forever or until a SIGALRM signal is received: example% sleep Inf. Example 4 Suspending Command Execution for 0.5 … solver already exists