Linux hard disk usage and Shell script implementation

Use df-tph to view hard disk usage under Linux:

sdua:/# Df-tphfilesystem                  Type   Size  used Avail use% mounted On/dev/vda3                   ext3   2.0G  974M  940M  51%/udev                        tmpfs   16G  500K   16G   1%/devtmpfs                       tmpfs   32G  9.4G   23G  30%/dev/shm/dev/vda2                   ext3  1008M   56M  902M   6%/boot/dev/vda9                   ext3    20G  173M   19G   1%/core/dev/vda8                   ext3    28G  2.5G   24G  10%/home/dev/vda10                  Ext3    21G  6.1G   14G  31%/opt/dev/vda6                   ext3   4.0G  186M  3.6G   5%/ Vartmpfs                       tmpfs  512M  620K  512M   1%/tmpshm                         tmpfs   32G  9.4G   23G  30%/dev/shm/dev/mapper/vgdb-lv_bakdata ext3    11G  326M  9.8G   4%/home/oracle/rmcbak/dev/mapper/ Vgdb-lvarchive  ext3    11G  156M  9.9G   2%/home/oracle/archive

Remove filesystem rows, Tmpfs rows (Tmpfs is a memory-based file system), obtaining the hard disk name and usage rate:

The actual shell script is implemented as follows:

#!/bin/bash# Set alert level 90% is defaultalert=50df-tph | Grep-ve ' ^filesystem|tmpfs|cdrom ' | awk ' {print $6 ' "$} ' |  While read Output;do   usep=$ (echo $output | awk ' {print $} ' | cut-d '% '-F 1)   partition=$ (echo $output | awk ' { Print $} ')   if [$usep-ge $ALERT]; then       echo "Running Out of space $partition ($usep%) on $ (date +%y-%m-%d)" C4/>fidoneexit 0

Running effect exceeds 50% usage rate:

　　

Linux hard disk usage and Shell script implementation