echo "sub process is running" # 在标准输出中显示一行 if [ $# != 1 ] # 如果没有带上参数,返回值是0 then exit 0 else # 否则返回值就是参数 exit $1 fi 1. 2. 3. 4. 5. 6. 7. 8. 运行结果如下: $ ./callSubprocess.sh 1 # 指定了返回值为1 sub process is running $ echo $?
if [ $# != 1 ] # 如果没有带上参数,返回值是0 then exit 0 else # 否则返回值就是参数 exit $1 fi 运行结果如下: $ ./callSubprocess.sh 1 # 指定了返回值为1 sub process is running $ echo $? # 查看返回值 1 $ ./callSubprocess.sh 3 # 指定了返回值为3 sub process is running $ ...
def check_process_running(process_name): # 使用ps命令检查进程是否存在 cmd = "ps aux | grep {}".format(process_name) output = subprocess.getoutput(cmd) # 检查输出结果中是否包含进程名 if process_name in output: return True else: return False ...
import subprocess import time def check_and_close_program(program_name): process = subprocess.Popen(["pgrep", program_name], stdout=subprocess.PIPE, stderr=subprocess.PIPE) stdout, stderr = process.communicate() if process.returncode == 0: print(f"{program_name} is running, closing it...
Python提供了多个进程管理模块,其中最常用的是`multiprocessing`模块和`subprocess`模块。这些模块可以帮助我们创建、启动和管理进程,同时也提供了一些方法来修改进程的状态。 修改进程状态的方法 1.使用`multiprocessing`模块 `multiprocessing`模块提供了`Process`类来表示一个进程对象,我们可以通过调用`start()`方法启动进程...
subprocess 是 Python 中执行操作系统级别的命令的模块,所谓系级级别的命令就是如ls /etc/user ifconfig 等和操作系统有关的命令。 subprocess 创建子进程来执行相关命令,并连接它们的输入、输出和错误管道,获取它们的返回状态。 1|1subprocess 来源 Subprocess模块开发之前,标准库已有大量用于执行系统级别命令的的方法...
If you are using Windows, please specify command line type. None What is the expected behavior? I expected to run ./install.sh all smooth What is the actual behavior? Instead it brings Error see below: Steps to reproduce. Step Step ...
check: 如果check参数的值是True,且执行命令的进程以非0状态码退出{0代表正常退出,非0代表异常退出},则会抛出一个CalledProcessError的异常,且该异常对象会包含 参数、退出状态码、以及stdout和stderr(如果它们有被捕获的话)。 其它参数默认值即可3、subprocess.CompletedProcess类介绍 ...
If you’re on a UNIX-based system where almost all typical shell commands are separate executables, then you can just set the input of the second process to the .stdout attribute of the first CompletedProcess: Python >>> import subprocess >>> ls_process = subprocess.run(["ls", "/usr/...
.\python.exe -c "import subprocess; subprocess.check_call(['wsl.exe', 'nano', '--version'])" Author kerim371 commented Mar 16, 2023 @Biswa96 thank you but the idea is to avoid using 'wsl.exe'. Let's suppose we work with python package that is dedicated to use on Linux. In...