regex matches from lines in file


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting regex matches from lines in file
# 8  
Old 02-24-2012
thx..
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk to remove lines in file if specific field matches

I am trying to remove lines in the target.txt file if $5 before the - in that file matches sorted_list. I have tried grep and awk. Thank you :). grep grep -v -F -f targets.bed sort_list grep -vFf sort_list targets awk awk -F, ' > FILENAME == ARGV {to_remove=1; next} > ! ($5 in... (2 Replies)
Discussion started by: cmccabe
2 Replies

2. Shell Programming and Scripting

Exclude lines in a file with matches with multiple Strings using egrep

Hi I have a txt file and I would like to use egrep without using -v option to exclude the lines which matches with multiple Strings. Let's say I have some text in the txt file. The command should not fetch lines if they have strings something like CAT MAT DAT The command should fetch me... (4 Replies)
Discussion started by: Sathwik
4 Replies

3. Shell Programming and Scripting

Required 3 lines above the file and below file when string matches

i had requirement like i need to get "error" line of above 3 and below 3 from a file .I tried with the below script.But it's not working. y='grep -n -i error /home/file.txt|cut -c1' echo $y head -$y /home/file.txt| tail -3 >tmp.txt tail -$y /home/file.txt head -3 >>tmp.txt (4 Replies)
Discussion started by: bhas85
4 Replies

4. Shell Programming and Scripting

Help in printing n number of lines if a search string matches in a file

Hi I have below script which is used to grep specific errors and if error string matches send an email alert. Script is working fine , however , i wish to print next 10 lines of the string match to get the details of error in the email alert Current code:- #!/bin/bash tail -Fn0 --retry... (2 Replies)
Discussion started by: neha0785
2 Replies

5. Shell Programming and Scripting

SED Replacing all but one regex match on a line or specific matches

Hi, I'm attempting to rename some files that have spaces in them. Without linking sed commands together is it possible to replace the first three "." to " ". File.name.is.long.ext -> File name is long.ext I can get the desired effect with echo "File.name.is.long.ext" | sed 's/\./ /g;s/... (5 Replies)
Discussion started by: vectox
5 Replies

6. Shell Programming and Scripting

script to delete lines from a txt file if pattern matches

File 6 dbnawldb010-b office Memphis_Corp_SQL_Diff Memphis-Corp-SQL-Inc-Application-Backup 03/09/11 03:24:04 42 luigi-b IPNRemitDB Memphis_Corp_SQL_Diff Memphis-Corp-SQL-Inc-Application-Backup 03/10/11 00:41:36 6 ebs-sqldev1-b IPNTracking Memphis_Corp_SQL_Diff... (4 Replies)
Discussion started by: ajiwww
4 Replies

7. Shell Programming and Scripting

Merge lines from one file if pattern matches

I have one comma separated file (a.txt) with two or more records all matching except for the last column. I would like to merge all matching lines into one and consolidate the last column, separated by ":". Does anyone know of a way to do this easily? I've searched the forum but most talked... (6 Replies)
Discussion started by: giannicello
6 Replies

8. Shell Programming and Scripting

Grep regex matches, groups

Hello, I am searching all over the place for this, just not finding anything solid :( I want to do be able to access the groups that are matched with grep (either with extended regex, or perl compatible regex). For instance: echo "abcd" | egrep "a(b(c(d)))" Of course this returns... (1 Reply)
Discussion started by: Rhije
1 Replies

9. Shell Programming and Scripting

Displaying lines of a file where the second field matches a pattern

Howdy. I know this is most likely possible using sed or awk or grep, most likely a combination of them together, but how would one go about running a grep like command on a file where you only try to match your pattern to the second field in a line, space delimited? Example: You are... (3 Replies)
Discussion started by: LordJezoX
3 Replies

10. Shell Programming and Scripting

Replace if regex on specific column matches expression?

I am attempting to convert rewrite rules to Nginx, and since due to the mass amount of rewrites we must convert, I've been trying to write a script to help me on a specific part, easily. So far I have this: rewrite ^action/static/(+)/$ staticPage.php?pg=$1&%$query_string; What I want done... (5 Replies)
Discussion started by: EXT3FSCK
5 Replies
Login or Register to Ask a Question
MATCH(1L)						      Schily's USER COMMANDS							 MATCH(1L)

NAME
match - searches for patterns in files SYNOPSIS
match [ -option ] pattern [ file ... ] DESCRIPTION
Match searches the named files or standard input (if no filenames are given) for the occurrences of the given pattern on each line. The program accepts literal characters or special pattern matching characters. All lines that match the pattern are output on standard output. You can only specify one pattern string for each match, however, you can construct an arbitrarily complex string. When you do not specify a file, match can be used as a filter to display desired lines. Standard in is used if no files are specified. OPTIONS
-not, -v Prints all lines that do not match. -i Ignore the case of letters -m Force not to use the magic mode -w Search for pattern as a word -x Display only those lines which match exactly -c Display matching count for each file -l Display name of each file which matches -s Be silent indicate match in exit code -h Do not display filenames -n Precede matching lines with line number (with respect to the input file) -b Precede matching lines with block number REGULAR EXPRESSIONS
The following is a table of all the pattern matching characters: c An ordinary character (not one of the special characters discussed below) is a one character regular expression that matches that character. c A backslash () followed by any special character is a one character regular expression that matches the special character itself. The special characters are: ! # % * { } [ ] ? ^ $ ! Logical OR as in match this!that!the_other. You may have to use `{}' for precedence grouping. # A hash mark followed by any regular expression matches any number (including zero) occurrences of the regular expression. ? Matches exactly any one character. W? matches Wa, Wb, Wc, W1, W2, W3 ... * Matches any number of any character. % Matches exactly nothing. It can be used in groups of ored patterns to specify that an empty alternative is possible. {} Curly brackets may be used to enclose patterns to specify a precedence grouping, and may be nested. {%!{test}}version matches the strings testversion and version. [string] A non empty string of characters enclosed in square brackets is a one character regular expression that matches any one character in that string. If however the first character of the string is a circumflex (^), the one character expression matches any character which is not in the string. The ^ has this special meaning only if it occurs first in the string. The minus (-) may be used to indi- cate a range of consecutive ASCII characters; for example, [0-9] is equivalent to any one of the digits. The - loses it's special meaning if it occurs first (after an initial ^, if any) or last in the string. The right square bracket (]) and the backslash () must be quoted with a backslash if you want to use it within the string. ^ Matches the beginning of a line. $ Matches the end of a line. (^*$ matches any entire line) EXAMPLES
FILES
None. SEE ALSO
grep(1), fgrep(1), egrep(1) DIAGNOSTICS
NOTES
Even if a match occurs more than once per line, the line is output only once. Quote special pattern matching characters to prevent them from being expanded by the Command Interpreter. BUGS
The length of the pattern is currently limited to 100 characters. This limit is reduced by 38 if the -w option is used. Joerg Schilling 15. Juli 1988 MATCH(1L)