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To select only column starting with a particular value

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Top Forums Shell Programming and Scripting To select only column starting with a particular value
# 8  
Old 07-11-2011
Useless use of cat and grep, this:
Code:
awk '/^3/{..}' $FILENAME >> NEW_FILE

should be sufficient.

Quote:
I have problem here,

my input file has 5 lines starting with 3 but when i use the below code i get output only for 4 lines
Maybe one of those lines has spaces before the "3" or your file misses a newline character on the last line.
Last edited by Franklin52; 07-11-2011 at 04:21 PM..
# 9  
Old 07-11-2011
Franklin,

Thank you for the link(very much useful),

But still am not sure why my script behaves in such a strange fashion, i just created a file myself with 5 lines all starting with 3, but still only 4 lines were printed( FYI - the file format am reading in is csv), i will try again and let you know how it goes, is there any other way to try out ?
# 10  
Old 07-11-2011
Quote:
Originally Posted by selvankj
Franklin,

Thank you for the link(very much useful),

But still am not sure why my script behaves in such a strange fashion, i just created a file myself with 5 lines all starting with 3, but still only 4 lines were printed( FYI - the file format am reading in is csv), i will try again and let you know how it goes, is there any other way to try out ?
Does it work if you add a newline to the file?
Code:
echo >> file.csv
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