优秀的 Shell 运维脚本

一、根据PID过滤进程所有信息

#!/bin/bash
# Function: 根据用户输入的PID，过滤出该PID所有的信息
read -p "请输入要查询的PID:" PID
PROCESS_INFO=$(ps -aux | awk '$2 ~ /^'"$PID"'$/ { print $0 }')
if [ -z "$PROCESS_INFO" ]; then
    echo "该PID不存在！！"
    exit 1
fi
echo "--------------------------------"
echo "进程PID: $PID"
echo "进程命令：$(echo $PROCESS_INFO | awk '{print $11}')"
echo "进程所属用户: $(echo $PROCESS_INFO | awk '{print $1}')"
echo "CPU占用率：$(echo $PROCESS_INFO | awk '{print $3}')%"
echo "内存占用率：$(echo $PROCESS_INFO | awk '{print $4}')%"
echo "进程开始运行的时刻：$(echo $PROCESS_INFO | awk '{print $9}')"
echo "进程运行的时间：$(echo $PROCESS_INFO | awk '{print $10}')"
echo "进程状态：$(echo $PROCESS_INFO | awk '{print $8}')"
echo "进程虚拟内存：$(echo $PROCESS_INFO | awk '{print $5}')"
echo "进程共享内存：$(echo $PROCESS_INFO | awk '{print $6}')"
echo "--------------------------------"

二、根据进程名过滤进程信息会显示出该进程名包含的所有线程

#!/bin/bash
# Function: 根据输入的程序的名字过滤出所对应的PID，并显示出详细信息，如果有几个PID，则全部显示
read -p "请输入要查询的进程名：" NAME
PROCESSES=$(ps -aux | grep "$NAME" | grep -v grep)
if [ -z "$PROCESSES" ]; then
    echo "该进程名没有运行！"
    exit 1
fi
echo "--------------------------------"
i=1
while read -r PROCESS; do
    echo "进程PID: $(echo $PROCESS | awk '{print $2}')"
    echo "进程命令：$(echo $PROCESS | awk '{print $11}')"
    echo "进程所属用户: $(echo $PROCESS | awk '{print $1}')"
    echo "CPU占用率：$(echo $PROCESS | awk '{print $3}')%"
    echo "内存占用率：$(echo $PROCESS | awk '{print $4}')%"
    echo "进程开始运行的时刻：$(echo $PROCESS | awk '{print $9}')"
    echo "进程运行的时间：$(echo $PROCESS | awk '{print $10}')"
    echo "进程状态：$(echo $PROCESS | awk '{print $8}')"
    echo "进程虚拟内存：$(echo $PROCESS | awk '{print $5}')"
    echo "进程共享内存：$(echo $PROCESS | awk '{print $6}')"
    echo "***************************************************************"
done <<< "$PROCESSES"
echo "--------------------------------"

三、根据用户名查询该用户的相关信息

#!/bin/bash
# Function: 根据用户名查询该用户的相关信息
read -p "请输入要查询的用户名：" USERNAME
USER_INFO=$(ps -aux | grep "$USERNAME")
if [ -z "$USER_INFO" ]; then
    echo "该用户名下没有运行的进程！"
    exit 1
fi
echo "--------------------------------"
echo "用户名: $USERNAME"
echo "进程列表："
echo "$USER_INFO"
echo "--------------------------------"

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