Sponsored Content
Full Discussion: Grep Command Help
Top Forums UNIX for Beginners Questions & Answers Grep Command Help Post 303045127 by Scrutinizer on Thursday 12th of March 2020 10:07:29 AM
Old 03-12-2020
Quote:
Originally Posted by DanilOnTheSky
It worked, can you explain a little bit why?


Regards,
The caret sign (^)means that the expression only matches text at the beginning of the line.
There already had be a space at the end.
These two measures make that a partial match will not work.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

grep command

I want to list all files created in a day but it doesn't work $ day=\'`date "+%b %d"`\' $ echo $day >>> 'Mar 12' $ ll |grep $day >>> can't open 12' ????? please help me (3 Replies)
Discussion started by: Medhi
3 Replies

2. UNIX for Advanced & Expert Users

how to exclude the GREP command from GREP

I am doing "ps -f" to see my process. but I get lines that one of it represents the ps command itself. I want to grep it out using -v flag, but than I get another process that belongs to the GREP itself : I would like to exclude # ps -f UID PID PPID C STIME TTY TIME CMD... (2 Replies)
Discussion started by: yamsin789
2 Replies

3. UNIX for Advanced & Expert Users

How to use grep command

I want to search pattern in between two words in a file so how to write query by using grep command?? Also want to get two words.. (2 Replies)
Discussion started by: ksr.test
2 Replies

4. UNIX for Advanced & Expert Users

how to use grep command

In my file contains special characters,alphanumerics all thease characters how to search the pattern between two strings that contains special characters Ex: find pattern between allocation_map_128*2 to creative.clicks_allocate != KNULL so there are special characters in my... (1 Reply)
Discussion started by: ksr.test
1 Replies

5. UNIX for Dummies Questions & Answers

GREP Command

Hi, I am new to UNIX environment, to find a contents from a given files i have used the command "grep -l "<search word>" *.txt, it is given the file names which contains that particular word, but it is anyway to get entire details of the file .., i need the output like ls -ltr, filename... (3 Replies)
Discussion started by: subrahmaniank
3 Replies

6. UNIX for Dummies Questions & Answers

Need help with grep command

Hi guys, i wondering with any1 could help me with this. I have this script will i need to "grep" an integer form a file x2. If the value is 0 then it's ok. But anything greater then 0, i'll ask the script to echo an error message. This is how the script looks like: MESSAGEFILE=x2 STRING="0" ... (5 Replies)
Discussion started by: hanyou.lin
5 Replies

7. Shell Programming and Scripting

can anyone help with shell script command about searching word with grep command?

i want to search in the current directory all the files that contain one word for example "hello" i want to achieve it with the grep command but not with the grep * (2 Replies)
Discussion started by: aintour
2 Replies

8. Shell Programming and Scripting

Help with using grep command with copy command

Hi, im taking an entry Unix class, and as part of my lab assignment I have to copy all files in the /home/david/lab3 directory that have the file extension .save to your lab3/temp directory. I'm having trouble getting the grep to do anything worth while I've been trying to do: cp... (6 Replies)
Discussion started by: Critical jeff
6 Replies

9. Shell Programming and Scripting

Grep Command

I have one text file, contains some values like <Q1:Name>1000000</Q1:Name>. I want to read the values and stores into an array for searching the each values into a file locations. If I use this find location |xargs grep -l "<Q1:Location>100000055042</Q1:Location>",I get the files, are having... (7 Replies)
Discussion started by: arindam guha
7 Replies

10. Shell Programming and Scripting

Grep command giving different result for different users for same command

Hello, I am running below command as root user #nodetool cfstats tests | grep "Memtable switch count" Memtable switch count: 12 Where as when I try to run same command as another user it gives different result. #su -l zabbix -s /bin/bash -c "nodetool cfstats tests | grep "Memtable switch... (10 Replies)
Discussion started by: Pushpraj
10 Replies
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)
All times are GMT -4. The time now is 03:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy