Sponsored Content
Top Forums Shell Programming and Scripting Using egrep to output expressions which are not found Post 302770190 by DGPickett on Thursday 14th of February 2013 04:38:38 PM
Old 02-14-2013
You can do this in one pass in awk, setting flags for each pattern, discarding input and testing the flags at eof.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Comma Delimited Output w/ egrep

Hi all, I have an input file that I am pulling out certain phases using the following commands: cat /nodes.txt | egrep -e 'OSVersion|PrimaryNodeName' Currently the output looks like this: OSVersion - 5.0 PrimaryNodeName - serverA OSVersion - 5.0 PrimaryNodeName - serverB OSVersion... (2 Replies)
Discussion started by: indianadoug
2 Replies

2. Shell Programming and Scripting

test egrep not found

Hi, I want to return failure from my script if a string is NOT found in a file, but I can't work out how to negate my "if". At the moment I have : if (egrep -i 'search string' filetosearch); then echo "found" else return 2 fi How can I get rid of the echo bit and just test for "string... (4 Replies)
Discussion started by: cdines
4 Replies

3. Shell Programming and Scripting

How to grep/awk/egrep two values for given output?

Dear Friends, I have a command which can result following output. Packet is: /var/adm/yyyy/pkt6043 Intended for network : /vob/repo I would like to retrive pkt6043 and /vob/repo using single command. Blue color test will be always contstant and red color text will be dynamic ... (2 Replies)
Discussion started by: baluchen
2 Replies

4. Shell Programming and Scripting

egrep output each file in new line

I have the following script that searches in several files and shows the search results and the matches filename on the screen. find . -exec egrep -wH "word1|word2" {} \; the output from the search display as: file1 word1 word2 I need to show each file search output result on new... (5 Replies)
Discussion started by: konddor
5 Replies

5. Shell Programming and Scripting

Output section of file between two expressions multiple times

Attached is the exact ouput of a vmware VDR log file I am working with but what I am trying to achieve is as follows: I need to output sections of the file using the string "Normal backup" as the start and "Duration" as the end to seperate files so I can then manipulate them further to create... (2 Replies)
Discussion started by: jelloir
2 Replies

6. Homework & Coursework Questions

Regular expressions output is whole line

Hi, I am newbie in shell programming and I need some help. I had some data and I format it in a file like dn: uid=aaaaa, dc=exmple, dc=com cn: bbbb cccc sn: cccc telephoneNumber:+30-6543-123456 I have to extract the information aaaaa , bbbb, cccc and the phone number using awk... (3 Replies)
Discussion started by: pro
3 Replies

7. Shell Programming and Scripting

bash: need to have egrep to return a text string if the search pattern has NOT been found

Hello all, after spending hours of searching the web I decided to create an account here. This is my first post and I hope one of the experts can help. I need to resolve a grep / sed / xargs / awk problem. My input file is just like this: ----------------------------------... (6 Replies)
Discussion started by: bash4ever
6 Replies

8. Shell Programming and Scripting

egrep output order

The order of egrep output seems to be as they occur in the file. How do I get the order as requested? For e.g. file contents: AAA EEE GGG egrep 'GGG|AAA|EEE' file gives AAA EEE GGG instead of GGG AAA EEE (2 Replies)
Discussion started by: madhavb
2 Replies

9. UNIX for Dummies Questions & Answers

Egrep output

If I have an output from egrep that has two elements on separate lines can I concatenate them? so the egrep for examople might be: egrep "filename|type" And the actual output might be: ./file001.doc Type Text Document How do I get the egrep to remove the line feed so the output is: ... (5 Replies)
Discussion started by: TuftyDave
5 Replies

10. Shell Programming and Scripting

Going mad on an egrep command (Reg Expressions)

Dear community, I am trying for several hours now to create an egrep command to grep the number of lines containing a specific text from a text-file but seem to have an error somewhere. The Textfile contains several thousand lines and has the expression "Lastname" in several lines.... (3 Replies)
Discussion started by: Donzo
3 Replies
fgrep(1)							   User Commands							  fgrep(1)

NAME
fgrep - search a file for a fixed-character string SYNOPSIS
/usr/bin/fgrep [-bchilnsvx] [-e pattern_list] [-f pattern-file] [pattern] [file...] /usr/xpg4/bin/fgrep [-bchilnsvx] [-e pattern_list] [-f pattern-file] [pattern] [file...] DESCRIPTION
The fgrep (fast grep) utility searches files for a character string and prints all lines that contain that string. fgrep is different from grep(1) and from egrep(1) because it searches for a string, instead of searching for a pattern that matches an expression. fgrep uses a fast and compact algorithm. The characters $, *, [, ^, |, (, ), and are interpreted literally by fgrep, that is, fgrep does not recognize full regular expressions as does egrep. These characters have special meaning to the shell. Therefore, to be safe, enclose the entire string within single quotes ('). If no files are specified, fgrep assumes standard input. Normally, each line that is found is copied to the standard output. The file name is printed before each line that is found if there is more than one input file. OPTIONS
The following options are supported: -b Precedes each line by the block number on which the line was found. This can be useful in locating block numbers by con- text. The first block is 0. -c Prints only a count of the lines that contain the pattern. -e pattern_list Searches for a string in pattern-list. This is useful when the string begins with a -. -f pattern-file Takes the list of patterns from pattern-file. -h Suppresses printing of files when searching multiple files. -i Ignores upper/lower case distinction during comparisons. -l Prints the names of files with matching lines once, separated by new-lines. Does not repeat the names of files when the pattern is found more than once. -n Precedes each line by its line number in the file. The first line is 1. -s Works silently, that is, displays nothing except error messages. This is useful for checking the error status. -v Prints all lines except those that contain the pattern. -x Prints only lines that are matched entirely. OPERANDS
The following operands are supported: file Specifies a path name of a file to be searched for the patterns. If no file operands are specified, the standard input will be used. /usr/bin/fgrep pattern Specifies a pattern to be used during the search for input. /usr/xpg4/bin/fgrep pattern Specifies one or more patterns to be used during the search for input. This operand is treated as if it were specified as -e pattern_list. USAGE
See largefile(5) for the description of the behavior of fgrep when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of fgrep: LC_COLLATE, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 If any matches are found 1 If no matches are found 2 For syntax errors or inaccessible files, even if matches were found. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin/fgrep +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ /usr/xpg4/bin/fgrep +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWxcu4 | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
ed(1), egrep(1), grep(1), sed(1), sh(1), attributes(5), environ(5), largefile(5), XPG4(5) NOTES
Ideally, there should be only one grep command, but there is not a single algorithm that spans a wide enough range of space-time tradeoffs. Lines are limited only by the size of the available virtual memory. /usr/xpg4/bin/fgrep The /usr/xpg4/bin/fgrep utility is identical to /usr/xpg4/bin/grep -F (see grep(1)). Portable applications should use /usr/xpg4/bin/grep -F. SunOS 5.10 4 Oct 2002 fgrep(1)
All times are GMT -4. The time now is 11:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy