This is similar in spirit to the solution from RudiC. However, it uses a local version of uniq that includes several features beyond a system uniq. In order to consider 2 fields, the first separator is modified. It appears that the last of the duplicate lines is desired. The local utility does not require the file to be sorted. Here is the script:
producing:
We often create work-alikes to system utilities that incorporate options that seem obvious (to us) that are useful. We currently don't publish the codes, but perhaps the documentation will help others develop codes for their shops.
I think that the technique of joining fields might be able to be used with the system uniq. The results would depend on which OS is being used, so that the correct duplicate is kept.
Best wishes ... cheers, drl
Last edited by drl; 05-03-2017 at 12:10 PM..
Reason: Correct minor typo (spelling).
Ok here's what I'm trying to do. I need to get a listing of all the mountpoints on a system into a file, which is easy enough, just using something like "mount | awk '{print $1}'"
However, on a couple of systems, they have some mount points looking like this:
/stage
/stand
/usr
/MFPIS... (2 Replies)
OK, I have read several things on how to do this, but can't make it work. I am writing this to a vi file then calling it as an awk script.
So I need to search a file for duplicate lines, delete duplicate lines, then write the result to another file, say /home/accountant/files/docs/nodup
... (2 Replies)
Hi please help me how to remove duplicate lines in any file.
I have a file having huge number of lines.
i want to remove selected lines in it.
And also if there exists duplicate lines, I want to delete the rest & just keep one of them.
Please help me with any unix commands or even fortran... (7 Replies)
Hi All,
Below is my requirement. Whatever coming in between ' ', needs to delete.
Input File Contents:
==============
This is nice 'boy'
This 'is
bad
boy.' Got it
Expected Output
===========
This is nice
This
Got it (4 Replies)
Hey all, a relative bash/script newbie trying solve a problem.
I've got a text file with lots of lines that I've been able to clean up and format with awk/sed/cut, but now I'd like to remove the lines with duplicate usernames based on time stamp. Here's what the data looks like
2007-11-03... (3 Replies)
hi :)
I need to delete partial duplicate lines
I have this in a file
sihp8027,/opt/cf20,1980182
sihp8027,/opt/oracle/10gRelIIcd,155200016
sihp8027,/opt/oracle/10gRelIIcd,155200176
sihp8027,/var/opt/ERP,10376312
and need to leave it like this:
sihp8027,/opt/cf20,1980182... (2 Replies)
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
Hello sed gurus. I am using ksh on Sun and have a file created by concatenating several other files. All files contain header rows. I just need to keep the first occurrence and remove all other header rows.
header for file
1111
2222
3333
header for file
1111
2222
3333
header for file... (8 Replies)
Hi, I'm sorry I'm no coder so I came here, counting on your free time and good will to beg for spoonfeeding some good code. I'll try to be quick and concise!
Got file with 50k lines like this:
"Heh, heh. Those darn ninjas. They're _____."*wacky
The "canebrake", "timber" & "pygmy" are types... (7 Replies)
I have a file
Line 1 a
Line 22
Line 33
Line 1 b
Line 22
Line 1 c
Line 4
Line 5
I want to delete all lines before last occurrence of a line which contains something which is defined in a variable. Say a variable var contains 'Line 1', then I need the following in the output.
... (21 Replies)