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 MINIX
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for lines containing a given pattern
SYNOPSIS
grep [-elnsv] pattern [file] ...
OPTIONS -e-e pattern is the same as pattern
-c Print a count of lines matched
-i Ignore case
-l Print file names, no lines
-n Print line numbers
-s Status only, no printed output
-v Select lines that do not match
EXAMPLES
grep mouse file # Find lines in file containing mouse
grep [0-9] file # Print lines containing a digit
DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions
accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1
occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a
match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is
returned.
SEE ALSO cgrep(1), fgrep(1), sed(1), awk(9).
GREP(1)