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#1
10-11-2006
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How to select line by line in shell
Hi,
This is what the file data.lst contains. aaaaaaaa eeeeeeeeeeeeeeee 4444444 rrrrrrrrrrrrr tttttttttttt bbbbbbbb eeeeeeeeeeeeeeee 7777777 uuuuuuuu eeeeeeeee qqqqqqqq gggggggggggggggg 6666666 oooooooo ppppppppp Here I want to cut the third field and put it in a new file I tried this way echo for i in `cat data.lst` do echo $i | cut -c 30-37 >> newfile.lst done But this doesn't work.Can someone help me. Thanks in advance Last edited by preethgideon; 10-11-2006 at 03:28 PM. 
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#3
10-11-2006
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Hey Andrek,
The awk worked.I did't get the first one.Anyways thank you very much. Have a great day.Bye
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#4
10-11-2006
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Hi Andrek,
I have another problem. I have have a similar file this way aaaaaaaa eeeeeeeeeeeeeeee 4444R16 rrrrrrrrrrrrr tttttttttttt bbbbbbbb eeeeeeeeeeeeeeee 7777777 uuuuuuuu eeeeeeeee qqqqqqqq gggggggggggggggg 6666R16 oooooooo ppppppppp In some lines last 3 digits of the third field ends with R16.If it ends with R16 then concatinate to a new file else proceed. Help !!
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#5
10-11-2006
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Python alternative:
Code:
o = open("output","a")
for line in open("input.txt"):
line = line.strip().split()
if line[2].endswith("R16"):
print >>o, ' '.join(line)
o.close()
/home> python test.py aaaaaaaa eeeeeeeeeeeeeeee 4444R16 rrrrrrrrrrrrr tttttttttttt qqqqqqqq gggggggggggggggg 6666R16 oooooooo ppppppppp
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#6
10-11-2006
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I am using vi.Will I be able to use this code ?
Its giving the error for sysntax.
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#7
10-11-2006
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Quote:
Code:
cut -d" " -f3 data.lst > newfile.lst
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