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Top Forums Shell Programming and Scripting extract nth line of all files and print in output file on separate lines. Post 302435332 by yogeshkumkar on Wednesday 7th of July 2010 05:29:57 AM
Old 07-07-2010
Bug extract nth line of all files and print in output file on separate lines.

Hello UNIX experts,

I have 124 text files in a directory. I want to extract the 45678th line of all the files sequentialy by file names. The extracted lines should be printed in the output file on seperate lines.

e.g. The input Files are one.txt, two.txt, three.txt, four.txt
The cat of four files are
Code:
one.txt  
AAAA
BBBB
CCCC
DDDD

two.txt
1111
2222
3333
4444

three.txt
aaaa
bbbb
cccc
dddd

four.txt
bcde
cdef
defg
efgh

The desired output in output.txt is (3rd line of all files one by one on seperate lines. Keep 6 spaces and print the filename at the end)
Code:
CCCC      one.txt       
3333      two.txt 
cccc      three.txt  
defg      four.txt

Thanks in advance.

Last edited by Franklin52; 07-07-2010 at 06:39 AM.. Reason: Please use code tags
 

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PESCETTI(1)						      General Commands Manual						       PESCETTI(1)

NAME
pescetti -- Pseudo-Duplimate Generator SYNOPSIS
pescetti DESCRIPTION
This manual page documents briefly the pescetti command. OPTIONS
Here are a list of the available options and what they do. You must specify exactly one from --demo, --generate or --load. --help Prints the help text --demo Demonstration mode. Generates one hand with permutations and the tutorial for how to use them. --generate=N Generate N random boards --load=boards.txt Load boards+analysis from boards.txt --load-dds=boards.dds Load boards from boards.dds in dds format --load-analysis=tricks.txt Load analysis from tricks.txt --permutations=permutations.txt Generate the permutations and save them to the given file --curtains=curtains.txt Save curtain cards to file curtains.txt --save=boards.txt Save the boards+analysis to boards.txt --save-dds=boards.dds Save the boards to boards.dds in dds format --save-analysis=tricks.txt Save the analysis to tricks.txt --format=html|txt|pdf Set the output mode to the given format --title=title Set the title for the output --output=hands.txt Print the hands to hands.txt, rather than to standard output --stats Generate statistics about the set of boards; included in the hands output --analyze Run the dds analyzer on the boards and print the resulting numberof tricks (warning SLOW) --criteria= A list of criteria to apply to each generated hand to generate specific hand types. The list should be space separated and each item may be suffixed with a colon and a (fractional) probability value which can be used to weight the criteria. E.g. --criteria="weaknt:0.8 strongnt:0.5" Valid criteria are: unbalanced weaknt strongnt twont strongtwo weaktwo three twoclubs 4441 singlesuit twosuits partscore game slam game-invite slam-invite jumpshift jumpfit splinter bacon weird --probability=factor Generate hands matching the criteria with only the given probability. Factor is in the range 0 to 1. On each attempt to generate a board it is rejected if it doesn't match the criteria with the given probability. A factor of about 0.8 gives roughly half matching boards AUTHOR
This manual page was written by Matthew Johnson <debian@matthew.ath.cx>. Permission is granted to copy, distribute and/or modify this docu- ment under the terms of the GNU General Public License, Version 2 as published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL. PESCETTI(1)
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