[glug-t] One Day One GNU/Linux Command (HEAD)

From: Bharathi Subramanian <sbharathi@xxxxxxxxxxxxx>
To: VEC-FOSS <vecfoss@xxxxxxxxxxxxxxxx>, GNU/Linux Users Group - Trichy <glug_t@xxxxxxxxxxxxx>, GNU/Linux User Group of TCE <glugot@xxxxxxxxxxxxx>
Date: Fri, 16 May 2008 09:59:25 +0530 (IST)

One Day One GNU/Linux Command
=============================

head - Output the 1st part of files.

Summary: 

Show the first 10 lines of each FILE. With more than one FILE, precede
each with a header giving the file name.  With no FILE, or when FILE
is -, then read the input from stdin.

Examples:

$ head  -- Read 10 lines from stdin and dump to stdout.

$ head foss.txt  -- Show 1st 10 lines of the file.

$ head f1 f2 -- Show 1st 10 lines of file f1 & f2 with header.

$ head -q f1 f2 -- Same as above, but with-out header.

$ head -n 15 myfile  -- Show 1st 15 lines only.

$ head -c 15 myfile  -- Show 1st 15 Bytes only.

$ head -c 15k myfile -- Show 1st 15KB only.


* Useless Use of Head (By Jan Schaumann):
  (1) ls -1 | head -n 10 | sed -e 's/FIND/REPLACE/'
  (2) http://www.10000takes.com/zidane.jpg

* MultiTail (Thanks Karanbir)
  http://www.vanheusden.com/multitail/

Read: man head

HTH :)
-- 
Bharathi S

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[glug-t] One Day One GNU/Linux Command (HEAD)

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