- #fetch and process memory information
- [ -f /proc/meminfo ] && { #First judge whether the file exists
- #-e是模式的意思，常用来保护以破折号开头的模式。
- #-w是全字匹配。
- #-i忽略大小写。
- #-d指定分割符，-f为按照分割符取出的域，2-指的是域2及以后
- Buffers=`grep -we 'Buffers' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- Cached=`grep -we 'Cached' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- MemFree=`grep -ie 'MemFree' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- MemTotal=`grep -ie 'MemTotal' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- SwapCached=`grep -ie 'SwapCached' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- SwapFree=`grep -ie 'SwapFree' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- SwapTotal=`grep -ie 'SwapTotal' /proc/meminfo | cut -d' ' -f2- | tr -d "[A-Z][a-z] "`
- }
- MEMUSED="$(( ( ( ( $MemTotal - $MemFree ) - $Cached ) - $Buffers ) / 1024 ))"
- MEMTOTAL="$(( $MemTotal / 1024))"
- MEMFREE="$(( $MEMTOTAL - $MEMUSED ))"
- MEMPER="$(( ( $MEMUSED * 100 ) / $MEMTOTAL ))"
- [ "$SwapTotal" -gt "1" ] && {
- SWAPUSED="$(( ( ( $SwapTotal - $SwapFree ) - $SwapCached ) / 1024 ))"
- SWAPTOTAL="$(( $SwapTotal / 1024))"
- SWAPFREE="$(( $SWAPTOTAL - $SWAPUSED ))"
- SWAPPER="$(( ( $SWAPUSED * 100 ) / $SWAPTOTAL ))"
- } || {
- SWAPUSED="0"
- SWAPTOTAL="0"
- SWAPPER="0"
- }
- # display the information
- /bin/echo
- /bin/echo "Memory"
- /bin/echo "Used: $MEMUSED MB"
- /bin/echo "Free: $MEMFREE MB"
- /bin/echo "Total: $MEMTOTAL MB"
- /bin/echo
- /bin/echo "Swap"
- /bin/echo "Used: $SWAPUSED MB"
- /bin/echo "Free: $SWAPFREE MB"
- /bin/echo "Total: $SWAPTOTAL MB"
- /bin/echo
时间： 2024-10-03 05:55:45