Linux中如何只获取指定进程名中的进程ID

获取指定进程名中的进程ID是在Linux系统中非常常见的操作。在本文中，我们将介绍如何使用命令行工具和编程语言来实现这个目标。

pgrep <进程名>

pgrep nginx

python
import psutil
def get_process_id(process_name):
    for proc in psutil.process_iter(['pid', 'name']):
        if proc.info['name'] == process_name:
            return proc.info['pid']
    return None
# 示例使用
process_name = 'nginx'
process_id = get_process_id(process_name)
if process_id:
    print(f"The process ID of {process_name} is {process_id}")
else:
    print(f"No process with the name {process_name} found")