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"tail -n 1 filename" error while "head -n 1 filename" is ok?

 
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# 1  
Old 03-21-2011
"tail -n 1 filename" error while "head -n 1 filename" is ok?
Hi all,

I was wondering why tail -n 2 filename produce an error when I manage to do similar command on head -n 2 filename

Code:
SunOS{type8code0}: tail -n 2 filename
  usage: tail [+/-[n][lbc][f]] [file]
         tail [+/-[n][l][r|f]] [file]

# 2  
Old 03-21-2011
You can try just without out the n:
Code:
tail -2 filename
head -2 filename

This User Gave Thanks to zaxxon For This Post:
type8code0
# 3  
Old 03-21-2011
MySQL
Quote:
Originally Posted by zaxxon
You can try just without out the n:
Code:
tail -2 filename
head -2 filename

Wow! It works! Many thanks to you Smilie

Code:
SunOS{type8code0}: cat file 
line 1
line 2
line 3
line 4
line 5

Code:
SunOS{type8code0}: head -2 file 
line 1
line 2

Code:
SunOS{type8code0}: tail -2 file 
line 4
line 5

Code:
SunOS{type8code0}: head -n 2 file
line 1
line 2

Code:
SunOS{type8code0}: tail -n 2 file 
usage: tail [+/-[n][lbc][f]] [file]
       tail [+/-[n][l][r|f]] [file]

 
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