First, we set ORS=", " so it prints ", " instead of \n for each "line".
The next is an expression telling it when to print. If it was '1', it'd print an item for each and every line of input. If it was 0, it'd print nothing at all.
The expression !A[$1]++ tells it to print the entire line only when the line's first field ($1) hasn't been found before. So the first time it looks for Jack, it sees that A["Jack"] is zero and prints. The ++ then adds 1 to that. Next time, it sees A["Jack"] is 1 and skips printing it.
i have a file with some 1000 entries it will contain entries like
1000,ram
2000,pankaj
1001,rahim
1000,ram
2532,govind
2000,pankaj
3000,venkat
2532,govind
what i want is i want to extract only the distinct rows from this file
so my output should contain only
1000,ram... (2 Replies)
I have data like this:
It's sorted by the 2nd field (TID).
envoy,90000000000000634600010001,04/11/2008,23:19:27,RB00266,0015,DETAIL,ERROR,
envoy,90000000000000634600010001,04/12/2008,04:23:45,RB00266,0015,DETAIL,ERROR,... (1 Reply)
hey all,
I need some help.
I have a text file with names in it.
My target is that if a particular pattern exists in that file more than once..then i want to rename all the occurences of that pattern by alternate patterns..
for e.g if i have PATTERN occuring 5 times then i want to... (3 Replies)
I have a log file with posts looking like this:
--
Messages can be delivered by different systems at different times. The id number is used to sort out duplicate messages. What I need is to strip the arrival time from each post, sort posts by id number, and reattach arrival time to respective... (2 Replies)
Hi Experts,
Please check the following new requirement. I got data like the following in a file.
FILE_HEADER
01cbbfde7898410| 3477945| home| 1
01cbc275d2c122| 3478234| WORK| 1
01cbbe4362743da| 3496386| Rich Spare| 1
01cbc275d2c122| 3478234| WORK| 1
This is pipe separated file with... (3 Replies)
Hi all,
I am working with a huge amount of files in a Linux environment and I was trying to filter my data. Here's what my data looks like
Name............................Size
OLUSDN.gf.gif-1.JPEG.......5 kb
LKJFDA01.gf.gif-1.JPEG.....3 kb
LKJFDA01.gf.gif-2.JPEG.....1 kb... (7 Replies)
Hi All,
I am merging files coming from 2 different systems ,while doing that I am getting duplicates entries in the merged file
I,01,000131,764,2,4.00
I,01,000131,765,2,4.00
I,01,000131,772,2,4.00
I,01,000131,773,2,4.00
I,01,000168,762,2,2.00
I,01,000168,763,2,2.00... (5 Replies)
I have been using grep to output whole lines using a pattern file with identifiers (fileA):
fig|562.2322.peg.1
fig|562.2322.peg.3
fig|562.2322.peg.3
fig|562.2322.peg.3
fig|562.2322.peg.7
From fileB with corresponding identifiers in the second column:
NODE_0 fig|562.2322.peg.1 peg ... (2 Replies)
i hav two files like
i want to remove/delete all the duplicate lines in file2 which are viz unix,unix2,unix3.I have tried previous post also,but in that complete line must be similar.In this case i have to verify first column only regardless what is the content in succeeding columns. (3 Replies)