There are multiple methods to determine duplicate instance and to check if process is already running. I will share some of the methods i commonly use in shell scripts. Check if process is already running using
Check if the process is running inside Windows Subsystem for Linux (Bash on Windows) - sindresorhus/is-wsl
1 2 17:38:07-androidyue~/osc_git/shell_works (master)$ ./checkRunningProcess.sh 'SimpleHTTPServer' Running 些许说明 该脚本会自动去除包含目标信息的grep进程。以及当前这个正在执行的脚本。 使用保存文件后,确保具有可执行属性。 Read More http://stackoverflow.com/questions/2903354/bash-script-to-chec...
我想构建一个小脚本(称为check_process.sh)来检查某个进程$PROC_NAME是否正在运行。如果是这样,则返回PID或-1否则。我的想法是在命令替换中使用pgrep -f <STRING>。我的脚本check_process.sh包含相同的行以及传递进程名称的额外变量:export ARG1=$1if 浏览2提问于2016-08-17得票数 2 回答已采纳 5回答...
Process Substitution Process substitution (程序替換) 只有在支援命名管道 (FIFOs), 或者支援使用 /dev/fd 方式為開啟的檔案命名的 系統中才可用。 它的形式是 <(list) 或者是 >(list)。 程序 list 執行時的輸入或輸出被連線到一個 FIFO 或者/dev/fd 中的檔案。檔案的名稱作為一個引數被傳遞到當前命令,...
While ShellCheck is mostly intended for interactive use, it can easily be added to builds or test suites. It makes canonical use of exit codes, so you can just add ashellcheckcommand as part of the process. For example, in a Makefile: ...
Here you try to regularly kill (TERM signal) the process nicely after 10.0 seconds after it has started. If it's still running after 20.0 seconds, then send a KILL signal (kill -9). If in doubt, check which signals are supported in your system (kill -l, for example). ...
Bash is Copyright (C) 1989-2002 by the Free Software Foundation, Inc. 描述(DESCRIPTION) Bash 是一個與 sh 兼容的命令解釋程序,可以執行從標準輸入或者文件中讀取的命令。 Bash 也整合了 Korn 和C Shell (ksh 和csh) 中的優秀特性。 Bash 的目標是成爲遵循 IEEE POSIX Shell and Tools specification (...
Next, we note the start time of a process. We then wait for the timeout value and check whether the process is running. If it is, we send a termination signal to stop it. If the process completes on its own, we just stop monitoring. Broadly speaking, any action can be constrained ...
The bash scripting language is more powerful than people realise and most tasks can be accomplished without depending on external programs.Calling an external process in bash is expensive and excessive use will cause a noticeable slowdown. Scripts and programs written using built-in methods (where ...