I have one file:
123*100*abcd*10
123*101*abcd*-29*def
123*100*abcd*-10
123*102*abcd*-105*asd
I would like to parameterize the search patterns in the following way so that the user could dynamically change the search pattern.
*100* and *- (ie *minus)
*102* and *-
The output that is... (6 Replies)
Hi
I'm not very good with the serach patterns and I'd need a sample how to find a line that has multiple patterns.
Say I want to find a line that has "abd", "123" and "QWERTY" and there can be any characters or numbers between the serach patterns, I have a file that has thousands of lines and... (10 Replies)
Good day, great gurus,
I'm new to Perl, and programming in general. I'm trying to retrieve a column of data from my text file which spans a non-specific number of lines. So I did a regexp that will pick out the columns. However,my pattern would vary. I tried using a foreach loop unsuccessfully.... (2 Replies)
Hi,
I have to write one script that has to search a list of numbers in certain zipped files.
For eg. one file file1.txt contains the numbers. File1.txt contains 5,00,000 numbers and I have to search each number in zipped files(The number of zipped files are around 1000 each file is 5 MB)
I have... (10 Replies)
I have two lists in a file that look like
a b
b a
e f
c d
f e
d c
I would like a final list
a b
c d
e f
I've tried multiple grep and awk but can't get it to work (8 Replies)
I would like to print result of multiple search pattern invoked from an one liner. The code looks like this but won't work
gawk -F '{{if ($0 ~ /pattern1/) pat1=$1 && if ($0 ~ /pattern2/) pat2=$2} ; print pat1, pat2}'
Can anybody help getting the right code? (10 Replies)
Hi,
I tried to search multiple pattern using awk
trans=1234
reason=LN MISMATCH
rec=`awk '/$trans/ && /'"$reason"'/' file`
whenevr i tried to run on command promt it is executing but when i tried to implment same logic in shell script,it is failing i.e $rec is empty
... (6 Replies)
Hi Bigshots,
I have a pattern file with two columns. I have another data file. If column 1 in the pattern file appears as the 4th column in the data file, I need to replace it (4th column of data file) with column 2 of the pattern file. If the pattern is found in any other column, it should not... (6 Replies)
Hi,
I have scenario like below and need to search for multiple patterns
Eg:
Test
Time Started= secs
Time Ended = secc
Green test
Test
Time Started= secs
Time Ended = secc
Green test
Output:
I need to display the text starting with Test and starting with Time... (2 Replies)
Discussion started by: weknowd
2 Replies
LEARN ABOUT DEBIAN
plan9-grep
GREP(1) General Commands Manual GREP(1)NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. 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.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-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.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
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 '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(7)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)