Linux如何查询正在运行的进程对应的可执行文件所在目录

# 查找nginx进程的PID
ps -ef | grep nginx | grep -v grep

# 或者使用pgrep命令（更简洁）
pgrep nginx

# 查看PID为9900的进程的可执行文件路径
ls -l /proc/9900/exe

# 输出示例：
# lrwxrwxrwx 1 root root 0 Jan 15 10:30 /proc/9900/exe -> /usr/sbin/nginx

# 查看PID为12597的进程的工作目录
ls -l /proc/12597/cwd

# 输出示例：
# lrwxrwxrwx 1 user user 0 Jan 15 10:35 /proc/12597/cwd -> /var/www/html

# 使用pwdx查看进程工作目录
pwdx 12597

# 输出示例：
# 12597: /var/www/html

# 查看进程的环境变量
cat /proc/9900/environ | tr '\0' '\n'

# 或者使用更易读的方式：
strings /proc/9900/environ

# 查看进程的启动命令
cat /proc/9900/cmdline | tr '\0' ' '

# 输出示例：
# nginx: master process /usr/sbin/nginx -g daemon off;

#!/bin/bash

if [ -z "$1" ]; then
    echo "Usage: $0 <process_name>"
    exit 1
fi

PID=$(pgrep "$1" | head -1)

if [ -z "$PID" ]; then
    echo "Process $1 not found"
    exit 1
fi

echo "=== Process Information for $1 (PID: $PID) ==="
echo "Executable path:"
ls -l /proc/$PID/exe
echo -e "\nWorking directory:"
pwdx $PID
echo -e "\nCommand line:"
cat /proc/$PID/cmdline | tr '\0' ' '
echo -e "\n"

chmod +x process_info.sh
./process_info.sh nginx

readlink /proc/9900/exe
readlink /proc/9900/cwd