Linux学习-显示磁盘和内存的使用情况_#!/bin/bash cat << eof (a)查看时间 (b)查看磁盘占用情况 (c)查看内存

根据选项显示磁盘或内存，swap的使用情况

#!/bin/bash
#
cat << EOF
d|D) show disk usage
m|M) show memory usage
s|S) show swap usage
*)   quit
EOF
echo -e '\033[31mPlease input your choice:\033[0m'
read selectOption
while [ $selectOption != 'quit' ];
do
case $selectOption in
d|D)
  echo "Disk usage:"
  df -Ph
  ;;
m|M)
  echo "memory usage:"
  free -m | grep Mem
  ;;
s|S)
  echo "swap usage:"
  free -m | grep Swap
  ;;
*)
  echo "Unknown"
esac
echo -e '\033[31mPlease input your choice again:\033[0m'
read selectOption
done
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