TrevorWendt.com

Disk Usage/Size

Trevor — Wed, 08 Sep 2010 22:36:03 +0000

All files/folders with sizes; Total size at bottom

du -h

One line, shows top level folder size including sub-folders/files.

du -hs

Total folder/file size recursive for multiple folders

du -sch

Show directory tree structure from directory down with count

tree -sd

Find large files in Linux

Trevor — Wed, 08 Sep 2010 22:33:08 +0000

My favorite one-liner to do this

find / -type f -size +10M -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'

From the Linux Man page for ‘find’, size can be set to the following:

‘b’ for 512-byte blocks (this is the default if no suffix is used)
‘c’ for bytes
‘w’ for two-byte words
‘k’ for Kilobytes (units of 1024 bytes)
‘M’ for Megabytes (units of 1048576 bytes)
‘G’ for Gigabytes (units of 1073741824 bytes)

Simple Command Line Sendmail Test

admin — Sat, 10 Apr 2010 02:26:08 +0000

This is one of those commands I rarely use but can never seem to find it or remember it when I need it so, here it is for easy reference. A simple, quick sendmail example to test from a command line. Replace you@yourdomain.com to your actual email address of course.

Subject only, no body message:
$mail -s "Hello world" you@yourdomain.com

Body message with Subject:
echo "This is the body of the mail message." | mail -s "Hello world" you@yourdomain.com