hpr0996 :: Command line cheat sheet
A Unix command cheat sheet written by FossWire
Hosted by JWP on Monday, 2012-05-28 is flagged as Explicit and is released under a CC-BY-SA license.
command line, date, cal, ncal, uptime, uname, du, df.
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In today's show JWP tries calling in a live over the UK call in number UK: +44-203-432-5879 (The US number +1-206-203-5729) and tells us of a CC-BY-SA cheat sheet written by FossWire.
https://fosswire.com/post/2007/08/unixlinux-command-cheat-sheet/
date - print or set the system date and time
$ date
Wed Mar 7 19:53:05 CET 2012
cal, ncal — displays a calendar and the date of Easter
$ cal
cal: setlocale: No such file or directory
March 2012
Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
uptime - Tell how long the system has been running.
uname - print system information
$ uname -a
Linux video 3.1.0-1-amd64 #1 SMP Tue Nov 29 13:47:12 UTC 2011 x86_64 GNU/Linux
$ cat /proc/cpuinfo | head -5
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 44
model name : AMD Sempron(tm) Processor 2600+
$ cat /proc/meminfo | head -5
MemTotal: 1027176 kB
MemFree: 111016 kB
Buffers: 136104 kB
Cached: 173992 kB
SwapCached: 7964 kB
du - estimate file space usage
$ du -ch | tail -1
253M total
df - report file system disk space usage
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdd1 28G 22G 4.3G 84% /
tmpfs 5.0M 4.0K 5.0M 1% /lib/init/rw
tmpfs 101M 632K 100M 1% /run
udev 496M 0 496M 0% /dev
tmpfs 201M 0 201M 0% /run/shm