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查看pid进程信息

Linux　2025/7/16 18:24:42　　点击：不统计

通过shell脚本，查看pid进程信息

将下面代码保存为shell 的pid.sh文件并给执行 +x 权限。

运行命令格式：./pid.sh [pid],[pid2],[pid3]

或则会 ./pid.sh 然后等待提示输入 [pid],[pid2],[pid3]

#!/bin/bash

# 如果没有提供参数，则提示用户输入
if [ "$#" -eq 0 ]; then
    read -p "请输入要查询的 PID（可输入多个，用空格分隔）: " INPUT
    set -- $INPUT
fi

# 打印表头
printf "%-10s | %-40s | %-50s | %-50s\n" "PID" "CMD" "EXE" "CWD"
printf "%s\n" "$(printf '%.0s-' {1..170})"

# 遍历每个 PID
for PID in "$@"; do
    # 检查是否为纯数字
    if ! [[ "$PID" =~ ^[0-9]+$ ]]; then
        printf "%-10s | %-40s | %-50s | %-50s\n" "$PID" "-非数字" "-" "-"
        continue
    fi

    # 判断是否存在该进程
    if [ ! -d "/proc/$PID" ]; then
        printf "%-10s | %-40s | %-50s | %-50s\n" "$PID" "- 不存在" "-" "-"
        continue
    fi

    # 获取 CMD
    CMD=$(tr '\0' ' ' < /proc/$PID/cmdline 2>/dev/null)
    EXE=$(readlink -f /proc/$PID/exe 2>/dev/null)
    CWD=$(readlink -f /proc/$PID/cwd 2>/dev/null)
    # 输出表格行
    printf "%-10s | %-40.40s | %-50.50s | %-50.50s\n" "$PID" "$CMD" "$EXE" "$CWD"
    printf "%s\n" "$(printf '%.0s-' {1..170})"
done

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