08-20-2010
Wow, agama, thanks!
ok, this is my first real use of awk, more or less. here goes:
/_X/ || /_Y/
means search for exactly _X or _Y
print that line, then move onto the next line
then, there is no search term, but you print, then print (effectively printing lines without _X or _Y twice--genius!!!)
THANK YOU!!!
Is there any way to start the awk searching after the first appearance of a string, like the word "matrix"?
Best
Mikey
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
I have a file with duplicate lines in it. I want to keep only the duplicate lines and delete the non duplicates. Can some one please help me?
Regards
Narayana Gupta (3 Replies)
Discussion started by: guptan
3 Replies
2. Shell Programming and Scripting
Hi Guys and Girls
I'm having trouble outputing from a sorted file... i have a looooong list of PVIDs and need to only output only those which occur 4 times!! Any suggestions?
ie I need to uniq (but not uniq (i've been through the man pg) this:
cat /tmp/disk.out|awk '{print $3}' |grep -v... (6 Replies)
Discussion started by: serm
6 Replies
3. UNIX for Dummies Questions & Answers
Hi all,
I have a tab-delimited file and want to remove identical lines, i.e. all of line 1,2,4 because the columns are the same as the columns in other lines. Any input is appreciated.
abc gi4597 9997 cgcgtgcg $%^&*()()*
abc gi4597 9997 cgcgtgcg $%^&*()()*
ttt ... (1 Reply)
Discussion started by: dr_sabz
1 Replies
4. Shell Programming and Scripting
Hi All,
I am trying to remove the duplicate entries in a file and print them just once. For example, if my input file has:
00:44,37,67,56,15,12
00:44,34,67,56,15,12
00:44,58,67,56,15,12
00:44,35,67,56,15,12
00:59,37,67,56,15,12
00:59,34,67,56,15,12
00:59,35,67,56,15,12... (7 Replies)
Discussion started by: faiz1985
7 Replies
5. Shell Programming and Scripting
I have a file where some of the lines are duplicates.
How do I use bash to print all the lines that have duplicates? (2 Replies)
Discussion started by: locoroco
2 Replies
6. UNIX for Advanced & Expert Users
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)
Discussion started by: krishnix
16 Replies
7. Shell Programming and Scripting
Hello,
I'm trying to write an script that in a txt with lines with 2 or more columns separated by commas, like
hello, one, two
bye, goal
first, second, third, fourth
hard, difficult.strong, word.line
will create another in which if a line has more than 2 columns, it will have another... (4 Replies)
Discussion started by: clinisbud
4 Replies
8. UNIX for Dummies Questions & Answers
I have a file with following data
A
B
C
I would like to print like this n times(For eg:5 times)
A
B
C
A
B
C
A
B
C
A
B
C
A (7 Replies)
Discussion started by: nsuresh316
7 Replies
9. Shell Programming and Scripting
Dear All,
I have a two-column data file and want to duplicate data in second column w.r.t. first column.
My file looks like:
2 5.672
1 3.593
3 8.260
...
And the desired format:
5.672
5.672
3.593
8.260
8.260
8.260
...
How may I do so please? I appreciate any help you may... (2 Replies)
Discussion started by: sxiong
2 Replies
10. Shell Programming and Scripting
Hi All,
I am storing the result in the variable result_text using the below code.
result_text=$(printf "$result_text\t\n$name") The result_text is having the below text. Which is having duplicate lines.
file and time for the interval 03:30 - 03:45
file and time for the interval 03:30 - 03:45 ... (4 Replies)
Discussion started by: nalu
4 Replies
LEARN ABOUT DEBIAN
explain_strdup_or_die
explain_strdup_or_die(3) Library Functions Manual explain_strdup_or_die(3)
NAME
explain_strdup_or_die - duplicate a string and report errors
SYNOPSIS
#include <libexplain/strdup.h>
char *explain_strdup_or_die(const char *data);
char *explain_strdup_on_error(const char *data);
DESCRIPTION
The explain_strdup_or_die function is used to call the strdup(3) system call. On failure an explanation will be printed to stderr, obtained
from the explain_strdup(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_strdup_on_error function is used to call the strdup(3) system call. On failure an explanation will be printed to stderr,
obtained from the explain_strdup(3) function, but still returns to the caller.
data The data, exactly as to be passed to the strdup(3) system call.
RETURN VALUE
The explain_strdup_or_die function only returns on success, see strdup(3) for more information. On failure, prints an explanation and
exits, it does not return.
The explain_strdup_on_error function always returns the value return by the wrapped strdup(3) system call.
EXAMPLE
The explain_strdup_or_die function is intended to be used in a fashion similar to the following example:
char *result = explain_strdup_or_die(data);
SEE ALSO
strdup(3)
duplicate a string
explain_strdup(3)
explain strdup(3) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2009 Peter Miller
explain_strdup_or_die(3)