I'm attempting to insert multiple lines before a line matching a given search pattern. These lines are generated in a separate function and can either be piped in as stdout or read from a temporary file.
I've been able to insert the lines from a file after the pattern using:
sed -i '/pattern/... (2 Replies)
Hello All,
I have a file which is having below type of data,
Jul 19 2011 | 123456
Jul 19 2011 | 123456
Jul 20 2011 | 123456
Jul 20 2011 | 123456
Here I wanted to grep for date pattern as below, so that it should only grep "Jul 20" OR "Jul ... (9 Replies)
Need to remove rest of line after the equals sign on search pattern from the searchfile. Can anybody help. Couldn't find any similar example in the forum:
infile:
64_1535: Delm. = 86 var, aaga
64_1535: Fran. = 57 ex. ccc
64_1639: Feb. = 26 (link). def
64_1817: mar. = 3/4. drz ... (7 Replies)
Hi ,
I have a file which has multiple rows of data, i want to match the pattern for two columns and if both conditions satisfied i have to add the counter by 1 and finally print the count value. How to proceed...
I tried in this way...
awk -F, 'BEGIN {cnt = 0} {if $6 == "VLY278" &&... (6 Replies)
Hi
I know sed and awk has options to give range of line numbers, but
I need to replace pattern in specific lines
Something like
sed -e '1s,14s,26s/pattern/new pattern/' file name
Can somebody help me in this....
I am fine with see/awk/perl
Thank you in advance (9 Replies)
Want to fetch a column with multiple pattern using awk.
How to achieve the same.
Tried
cat test
address : 10.63.20.92/24
address : 10.64.22.93/24
address : 10.53.40.91/24
cat test | awk '{print $3}' |awk -F "/" '{print $1}'
10.63.20.92
10.64.22.93
10.53.40.91
Is there any... (2 Replies)
Hi all,
I am new to using awk and am quickly discovering what a powerful pattern-recognition tool it is. However, I have what seems like a fairly basic task that I just can't figure out how to perform in one line. I want awk to find and print all the lines in which one of multiple patterns (e.g.... (8 Replies)
Hi ,
I have a file where i have modifed certain things compared to original file . The difference of the original file and modified file is as follows.
# diff mir_lex.c.modified mir_lex.c.orig
3209c3209
< if(yy_current_buffer -> yy_is_our_buffer == 0) {
---
>... (5 Replies)
Hi All
I am having one awk and sed requirement for the below problem.
I tried multiple options in my sed or awk and right output is not coming out.
Problem Description
###############################################################
I am having a big file say file having repeated... (4 Replies)
Hello Experts , require help . See below output:
File inputs
------------------------------------------
Server Host = mike
id rl images allocated last updated density
vimages expiration last read <------- STATUS ------->... (4 Replies)
Discussion started by: tigerhills
4 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output.
The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)