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Reload this Page can anybody explain this please... head -n FILENAME | tail -1
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Old 10-13-2014, 08:45 AM   #1
jhonson31
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can anybody explain this please... head -n FILENAME | tail -1

hi a am a total newbie to linux n cli, can anybody explain this please...

head -n FILENAME | tail -1

&

sed -n "FILENUMBERp" filename


please be detailed in your answers.... I will be thankful
 
Old 10-13-2014, 09:11 AM   #2
Keith Hedger
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see the relevent man pages this is basic stuff so come on put a bit of effort into it
 
Old 10-13-2014, 09:43 AM   #3
teckk
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man head
man tail
man sed, if you have it installed

Also online at
http://linux.die.net/man/1/head
http://linux.die.net/man/1/tail
http://linux.die.net/man/1/sed

So head -n FILENAME gets the first -n lines of a FILENAME.
tail gets the last lines.

sed is a stream editor.
https://www.gnu.org/software/sed/manual/sed.html
http://sed.sourceforge.net/sed1line.txt
 
  


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