I have a file with 65 sets of 35 coordinates, and would like to isolate these coordinates so that I can easily copy the coordinates to another file. The problem is, I've got a 9 line header before each set of coordinates (so each set is 44 lines long). There are a zillion threads out there about deleting whole lines out of a file, so I figured I would give one of those a shot. First I split the big file into a bunch of little ones using:
and then did what I thought would delete the first 9 lines of every file with output in the file name, combining everything back into one big file again:
However, after I ran that I noticed that in newfile, only the first 9 lines of the first ouput file were deleted while every other file remained unchanged. Further, an additional header
had been added on!
What am I doing wrong?
tl;dr how do you delete lines 1-9, 45-53, 89-97, etc in a file?
So I just want to make sure I follow this. You converted the numbering of lines to base 44 (that's what the NR % 44 was, I gather) so that you could delete any line with a ones place of 9 or under? What's the 0 {next} 1 bit, if you don't mind my asking?
Also, thanks very much for your help!
So I just want to make sure I follow this. You converted the numbering of lines to base 44 (that's what the NR % 44 was, I gather) so that you could delete any line with a ones place of 9 or under? What's the 0 {next} 1 bit, if you don't mind my asking?
Also, thanks very much for your help!
The awk variable NR gives the line number, the modulo operator % gives the remainder of the division of NR by 44.
Skip lines if the remainder is less then 10 and greater then 0, thus the lines 1-9, 45-53, 89-97, etc. are not printed.
The 1 means true to awk and invokes awk to print the line.
Hi Guys ,
I have two files say a1 and a2 having following contents
a1
dag
wfd
a2
dag
wfd
chire
hcm
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a2
chire
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04-08-2011 message
04-08-2011 message
03-08-2011 message
01-08-2011 message
31-07-2011 message
24-07-2011 message
15-07-2011 message
13-12-2008 message
26-11-2007 message
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GTGAGATTGCTAATGAGCTGCTTTTAGGGGGCGTGTTGTGCTTGCTTTCC
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I have written below code
----
sed '/.tk *$/d' dat_file.txt > temp.txt
----
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