Hi
I need a perl onliner which seaches a line starting with a pattern(last occurence) and display it.
similar to
grep 'pattern' filename | tail -1 in UNIX
Ex: I want to display the line starting with "cool" and which is a last occurence
adadfadafadf
adfadadf
cool dfadfadfadfara... (4 Replies)
Hi
Can anyone please help me in resolving my issue.
I have a file with entries like this
t9787ms 99970 22/08/2010 12:30 /www.google.com
t9788ms 99942 22/08/2010 12:40 /www.google.com
t4788ms 88942 22/08/2010 01:40 /www.google.com
there are around 5 lakh records of this type my requirement... (4 Replies)
Hi,
Do anybody know how to use awk to count the pattern at specific column?
Input file
M2A928K 419 ath-miR159a,gma-miR159a-3p,ptc-miR159a 60 miR235a
.
.
Output file
M2A928K 419 ath-miR159a,gma-miR159a-3p,ptc-miR159a 60 miR235a 3
.
.
I plan to count how many "miR" in column 3... (2 Replies)
Hi,
I have a simple problem but i guess stupid enough to figure it out. i have thousands rows of data. and i need to find match patterns of two columns and print the number of rows. for example:
inputfile
abd abp 123
abc abc 325
ndc ndc 451
mjk lkj... (3 Replies)
I have a large file and many lines are duplicated. I'm trying to delete lines with every second occurrence of a pattern. Did tried searching similar question but no luck.
I can delete all lines matching pattern with :g/pattern/d but don't want to lose data.
Sample pattern to delete... (6 Replies)
I have few lines in a text file. I am trying to get the line number of uncommented line from the text file using unix shell script.
For example : I want the line number of Orange from the below text file. Here expected answer is 4 since the line 2 is commented.
Apple
#Orange
grapes
Orange (4 Replies)
My data
20161220 20:30:01 MODE 1 TEST 1 SOURCE 1 SET 1
20161220 20:30:02 MODE 1 TEST 2 SOURCE 1 SET 1
20161220 20:30:02 MODE 1 TEST 3 SOURCE 1 SET 1
20161220 20:30:02 MODE 1 TEST 1 SOURCE 2 SET 1
20161220 20:30:04 MODE 1 TEST 1 SOURCE 1 SET 1 MODE 1 TEST 2 SOURCE 2 SET 1
20161220 20:30:02... (7 Replies)
Hello.
Here is a file contents :
declare -Ax NEW_FORCE_IGNORE_ARRAY=(="§" ="§" ="§" ="§" ="§" .................. ="§"Here is a pattern
=I want to extract 'NEW_FORCE_IGNORE_ARRAY' which is the whole word before the first occurrence of pattern '='
Is there a better solution than mine :... (3 Replies)
I am looking to replace minimum password value in login.defs file. it does change , but it change the commented one also.
please
1. my script to be change 12 in the below line...
sed -i '/PASS_MIN_LEN/c\PASS_MIN_LEN 12' /etc/login.defs
action- It does change, but it change in 2 place. ... (3 Replies)
Discussion started by: yash_message
3 Replies
LEARN ABOUT DEBIAN
strsub
STRSUB(3pub) C Programmer's Manual STRSUB(3pub)NAME
strsub - substitute first occurence of pattern with another string
SYNOPSIS
#include <publib.h>
char *strsub(char *str, const char *pat, const char *sub);
DESCRIPTION
strsub finds the first occurence of the pattern pat in the string str (using a method similar to strstr(3), i.e., no regular expressions),
and replaces it with sub. If pat does not occur in str, no substitution is made.
Of course, if sub is an empty string, the pattern is deleted from the string.
RETURN VALUE
strsub returns a pointer to the first character after the substitution, or NULL if no substitution was made.
EXAMPLE
To substitute up to two occurences of "foo" with "bar" in a line, one might do the following.
p = strsub(line, "foo", "bar");
if (p != NULL)
strsub(line, "foo", "bar");
SEE ALSO publib(3), strstr(3), strgsub(3)AUTHOR
Lars Wirzenius (lars.wirzenius@helsinki.fi)
Publib C Programmer's Manual STRSUB(3pub)