Tag Archives: How to check huge files

Highest size files in mount point

Search for the highest sized file in the mount point. Useful while dealing with full mount points and cleaning up files to free up space.


There are many instances in the life of sysadmin when his system starts throwing filesystem full events and its headache to search culprit. Here we are going to see a command to search and display files with high utilization in a mount point. This is very useful to dig down and target exactly huge/big files rather than wasting time on trimming/deleting small files.

For example, if you are facing /tmp is full. Below is the command to search for large files in the given mount point. Here we are using du i.e. disk usage command then sorting the output list in reverse order so that the highest size files come to the top. Then getting top 10 to display as a result.

# du -a /tmp | sort -nr  | head -n 10
3396448 /tmp
1801984 /tmp/Acasrro411704
994848  /tmp/software.depot
81088   /tmp/PACPTHP_00001.depot
77088   /tmp/OraInstall2008-03-19_09-39-20AM
76912   /tmp/OraInstall2008-03-19_10-15-28AM
76848   /tmp/OraInstall2008-03-19_09-39-20AM/jre/1.4.2
76848   /tmp/OraInstall2008-03-19_09-39-20AM/jre
76656   /tmp/OraInstall2008-03-19_10-15-28AM/jre/1.4.2
76656   /tmp/OraInstall2008-03-19_10-15-28AM/jre

Replace /tmp with a mount point of your choice while running it in your system.

There are also different ways you can trace the highest size hogger on a mount point. Below are few

To find the large file size above 5000

# find /var -xdev -size +5000
/var/opt/perf/datafiles/logglob
/var/opt/perf/datafiles/logproc
/var/opt/perf/datafiles/logdev
/var/opt/perf/datafiles/logtran
/var/opt/OV/log/SPISvcDisc/DBSPI_ORACLE_UNIX_discovery.trc
/var/opt/OV/log/osspi/osspi.log
----- output truncated -----





Top 10 large directories in the mount point 

# du -kx /var | sort -rn -k1 | head -n 10
6726048	/var
3962830	/var/opt
3471340	/var/opt/OV
2494362	/var/adm
2465390	/var/opt/OV/tmp
1512210	/var/opt/OV/tmp/OpC
1438642	/var/adm/openv/logs
1438642	/var/adm/openv
921030	/var/adm/sa
822672	/var/adm/openv/logs/bpdbm

Top 10 large files in the mount point

# find /var -type f -xdev -print | xargs -e ll | sort -rn -k5 | head -n 10
-rw-rw----   1 root       bin        1463238440 Nov  1 14:45 /var/opt/OV/tmp/OpC/msgagtdf
-rw-rw-r--   1 root       bin        944541567 Nov  1 14:52 /var/opt/OV/tmp/sqlnet.log
-rw-rw-rw-   1 oracle92   dba        307369984 Mar  5  2014 /var/opt/omni/tmp/rcvcat21945.exp
-rw-------   1 root       mail       187848937 Nov  1 14:01 /var/tmp/dead.letter
-rw-rw----   1 root       bin        84680704 Feb 16  2013 /var/opt/OV/tmp/OpC/msgagtdf-11975.gc
-rw-r--r--   1 root       bin        80937879 Nov  1 14:54 /var/opt/OV/log/osspi/osspi.log
-rwxrwxrwx   1 root       users      58566204 Nov  1 14:55 /var/adm/rrdtool/apcrss32.rrd
-rw-rw-r--   1 root       bin        55159884 May 25  2009 /var/opt/OV/installation/temp/bbc/fx/upload/DeplM22799
-rw-rw-r--   1 root       bin        55159884 May 18  2009 /var/opt/OV/installation/temp/bbc/fx/upload/DeplM22011
-rw-rw-r--   1 root       bin        55159884 Jun 30  2010 /var/opt/OV/installation/temp/bbc/fx/upload/DeplM10143