02-16-2005
Quote:
Originally Posted by Bosibus
i tried to use diff and comm but i think the file might be too big
diff and comm work on pretty darn big files. How are you building your current user list?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi,
i have to check the name of file in other directory which contains number of files to check for duplicte file name avaliable or not.
thanks (2 Replies)
Discussion started by: ravi214u
2 Replies
2. Shell Programming and Scripting
Dear Members,
I need a perl code:
1. Which will open first file with two columns separated by tab:
37 Distribution and seasonal variation of trace metals
85 Seasonal variability of the mixed layer in the central Bay
99 Dynamics of transparent exopolymeric particles (TEP)
103 Bacterial... (0 Replies)
Discussion started by: srsahu75
0 Replies
3. Shell Programming and Scripting
Help needed...
Can you tell me how to compare the last two couple entries in a file and print their result in new file..:confused:
I have one file
Check1.txt
\abc1 12345
\abc2 12327
\abc1 12345
\abc2 12330
I want to compare the entries in Check1 and write to... (1 Reply)
Discussion started by: kichu
1 Replies
4. Shell Programming and Scripting
Hi,
I have two files with below data::
file1:-
123|aaa|ppp
445|fff|yyy
999|ttt|jjj
555|hhh|hhh
file2:-
445|fff|yyy
555|hhh|hhh
The records present in file1, not present in file 2 should be writtent to the out put file.
output:-
123|aaa|ppp
999|ttt|jjj
Is there any one line... (3 Replies)
Discussion started by: gani_85
3 Replies
5. UNIX for Dummies Questions & Answers
Hi
We send *.csv with sensitive data to our customers. Our customers open those files with Excel.
A new requirement is that we password protect those CSV files.
I thought to pack them with ZIP and assign a password to the archive.
But Solaris 10 can't encrypt ZIP files.
$ zip -P... (12 Replies)
Discussion started by: slashdotweenie
12 Replies
6. Shell Programming and Scripting
Hi all,
I have one file with IDs
Q8NDM7
P0C1S8
Q8TF30
Q9BRP8
O00258
Q6AWC2
Q9ULE0
Q702N8
A4UGR9
Q13426
Q6P2D8
Q9ULM3
A8MXQ7
I want to compare ID file with another file which has complete information about these IDs and also about other IDs which are not in the above ID file. As... (10 Replies)
Discussion started by: kaav06
10 Replies
7. Shell Programming and Scripting
Hello all,
I need to write a script which has following requirement:
Need to read the filenames from text file and then search for the above read files in the required directory and if match found backup them in a backup folder.
And also need to compare and verify whether the files in the... (7 Replies)
Discussion started by: saurau
7 Replies
8. Shell Programming and Scripting
Hi,
I need to compare a file with its contents matching to that of another file(filename , received date and record count).
Lets say has File A original data
Ex -
1,abc,1234
2,bcd,4567
3,cde,8901
and File B has details of File A
Ex-
FILEA.TXT|06/17|2010|3
(filename)|(received... (18 Replies)
Discussion started by: Prashanth B
18 Replies
9. UNIX for Dummies Questions & Answers
Hi
I have 2 files which are tab delimited.
file1
chr1 5 10 P1 KR4
chr1 10 20 1H LA1 R0 TA1
file2
P1 G6 13.27 0.2425
P1 KR4 18.79 0.3060
P1 DND1 19.44 0.2833
N1 DH1 0.99 1.08
1H R0 0.9 NA
LA1 R0 90 0.9
TA1 KR4 1.8 8.9
TA1 R0 9.7 99I want to check whether first 2 columns in file2 (column... (1 Reply)
Discussion started by: raj_k
1 Replies
10. Forum Support Area for Unregistered Users & Account Problems
I was unable to login and so used the "Forgotten Password' process. I was sent a NEWLY-PROVIDED password and a link through which my password could be changed. The NEWLY-PROVIDED password allowed me to login.
Following the provided link I attempted to update my password to one of my own... (1 Reply)
Discussion started by: Rich Marton
1 Replies
LEARN ABOUT OPENDARWIN
comm
COMM(1) BSD General Commands Manual COMM(1)
NAME
comm -- select or reject lines common to two files
SYNOPSIS
comm [-123i] file1 file2
DESCRIPTION
The comm utility reads file1 and file2, which should be sorted lexically, and produces three text columns as output: lines only in file1;
lines only in file2; and lines in both files.
The filename ``-'' means the standard input.
The following options are available:
-1 Suppress printing of column 1.
-2 Suppress printing of column 2.
-3 Suppress printing of column 3.
-i Case insensitive comparison of lines.
Each column will have a number of tab characters prepended to it equal to the number of lower numbered columns that are being printed. For
example, if column number two is being suppressed, lines printed in column number one will not have any tabs preceding them, and lines
printed in column number three will have one.
The comm utility assumes that the files are lexically sorted; all characters participate in line comparisons.
DIAGNOSTICS
The comm utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
cmp(1), diff(1), sort(1), uniq(1)
STANDARDS
The comm utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
HISTORY
A comm command appeared in Version 4 AT&T UNIX.
BSD
June 6, 1993 BSD