Größe von Verzeichnissen und Inhalten zusammenzählen: du (disk usage)
z.B.
du -a -m
zählt alle Verzeichnisse und Dateien (-a) zusammen uns zeigt Ergebnis in MB (-m)
-h : human readable (or „–human-readable“)
-x : berücksichtigt keine gemounteten Unterverzeichnisse
z.B. nummerisch sortiert
du -shx | sort -n
A partition filled >=90% for cronscript:
#!/usr/bin/env bash
# loop over each device name culled from df with grep, excluding tmpfs entries
# the device name is stored in $dev
for dev in `df | grep -v tmpfs | egrep -o ^/dev/[[:alnum:]]\{3,4\}`; do
used=`df | grep ^$dev | egrep -o [0-9]\{1,2\}% | egrep -o [0-9]\{1,2\}` # the percent of space used is stored in $used
fs=`df | grep ^$dev | egrep -o /[[:alpha:]/]*$` # the mount point is stored in fs
if [ $used -ge 90 ]; then # if more than 90% of space is used
echo "$dev ($fs) is $used% full." | mail -s "$dev is low on free space." root # send a warning email to root
fi
done
or
#!/bin/bash
system=`hostname --fqdn`
for line in `df -aPh | grep "^/" | sort | awk '{print$6"-"$5"-"$4}'`; do
percent=`echo "$line" | awk -F - '{print$2}' | cut -d % -f 1`
partition=`echo "$line" | awk -F - '{print$1}' | cut -d % -f 1`
limit=90
if [ $partition == '/cdrom' ]; then
limit=101
fi
if [ $percent -ge $limit ]; then
echo "Free Space warning!" | mail -a "From: spacecsekker" -s "[$system] $line" xxx@xxx.bme.hu
fi
done
Quelle1)
The du command ( disk usage ) gather and summarize about how much your disk space being used by your file and the disk space being use by directory in the Linux system The du command can be use to find the size of file and the size of directory in Linux system. The example below show the step to use the du command to get the size of file and the size of directory in Linux Fedora Core system.
Using du command to get file size.
[root@fedora ~]# du -h 4.0K ./.rhopenoffice1.1/program/addin 108K ./.gnome2 28K ./.nautilus/metafiles 32K ./.nautilus 6.0M ./.mozilla/firefox/1wvl2gwo.default/Cache 12K ./.mozilla/firefox/1wvl2gwo.default/chrome 12M .
The output from above command show the size of each file, directory and with the total size used in your system in human readable size ( -h ).
The du command can be use to determine the total size of file in current directory. The example below show the du command use with -s (summarize) and -h (human readable format) option to summaries the size of disk space taken by current directory.
[root@fedora ~]# du -s 768096 . [root@fedora ~]# du -sh 751M . [root@fedora ~]#
[root@fedora ~]# du -sh * 14M 20060524-033-x86.exe 85M labu-punyer 8.0K libjmti.odt 4.0K linux-feeds.txt 4.0K mambo_conf.txt 8.0K yumex-0-1.0.1-1.0.fc5.html 408K yumex-1.0.1-1.0.fc5.noarch.rpm 8.0K yum install 11M zope-2.8.5-1.fc5.i386.rpm [root@fedora ~]#
The example below show du command execute with -c option to get the size of each file that have filename ending with .txt and then display grand total of all files in human readable format.
[root@fedora ~]# du -ch *.txt 4.0K create.drupal-2.txt 4.0K create.drupal.db.txt 4.0K drupal-pass.txt 4.0K joomla-bazz.txt 4.0K linux-feeds.txt 4.0K mambo_conf.txt 8.0K msql-bazz.txt 4.0K setup_mysql_mambo.txt 4.0K simple.txt 40K total [root@fedora ~]#
The example below show the use of du command to get the disk usage of each user home directory on the system.
[root@fedora home]# pwd /home [root@fedora home]# du -sh * 492K bazz 48K botol 44K hamirul 22M kambing 48K kayu 56K labu 80K sysuser 40K william 40K ycluckers [root@fedora home]#
[root@fedora home]# pwd /home [root@fedora home]# du -csh * 492K bazz 48K botol 44K hamirul 22M kambing 48K kayu 56K labu 80K sysuser 40K william 40K ycluckers 23M total [root@fedora home]#
-a, –all write counts for all files, not just directories