07-25-2016
This User Gave Thanks to jacobs.smith For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I would like to be able to grep (or some such thing) a search argument and then display the line plus the preceding 3 lines of the file and the following 3 lines of the file. Any ideas? Thanks in advance! :D (3 Replies)
Discussion started by: robster
3 Replies
2. Shell Programming and Scripting
hi,
if i have a file and i want to search for the word error using grep, i usually want to see the surrounding lines too as they contain info about the error. what would be a nice way to achieve this?
thanks (6 Replies)
Discussion started by: JamesByars
6 Replies
3. UNIX for Dummies Questions & Answers
OK. I have a file I'd like to be able to grep, but on top of returning the line where the pattern matches, I'd like to be able to get the previous 8 lines and the following 8 lines. Is there a way to do this? (2 Replies)
Discussion started by: mrwatkin
2 Replies
4. Shell Programming and Scripting
hi,
if I grep a file, sometimes I want to see as an eg 2 lines above and below my grep results.
how can this be done
thanks (3 Replies)
Discussion started by: JamesByars
3 Replies
5. Shell Programming and Scripting
Hi,
i would like to get the above and below lines of the grep pattern .
For ex :
file as below:
chk1- aaaa
1-Nov
chk2 -aaaa
##########
chk1-bbbbbb
1-Nov
chk2-bbbbbb
#########
my search pattern is date : 1-Nov
i need the o/p as below
chk1- aaaa
1-Nov (6 Replies)
Discussion started by: expert
6 Replies
6. Shell Programming and Scripting
I was wondering if it was possible to grep a pattern based on the surround text. For example, if i have an input file like this:
titleA
titleB
titlex
titleC
titleD
titlex
titleE
And I want to grep "title" and save the results only if it is not followed with a "titlex". My output... (14 Replies)
Discussion started by: jl487
14 Replies
7. Shell Programming and Scripting
Hi,
I have got the below requirement. please suggest.
I have a file like,
Processing Item is:
/data/ing/cfg2/abc.txt
/data/ing/cfg3/bgc.txt
Processing Item is:
/data/cmd/for2/ght.txt
/data/kernal/config.klgt.txt
I want to process the above file to get the output file like,
... (5 Replies)
Discussion started by: rbalaj16
5 Replies
8. Shell Programming and Scripting
Hi All,
I am trying to fetch lines before a pattern, I got to know about -B flag in grep but we have to pass the number to get those lines before some pattern say (X), now what if I want to get line/s with some other pattern say (Y) before X pattern? How to get about it? please help.
Input:... (5 Replies)
Discussion started by: dips_ag
5 Replies
9. UNIX for Dummies Questions & Answers
Hi all!
Thanks for taking the time to view this!
I want to grep out all lines of a file that starts with pattern 1 but also does not match with the second pattern.
Example:
Drink a soda
Eat a banana
Eat multiple bananas
Drink an apple juice
Eat an apple
Eat multiple apples
I... (8 Replies)
Discussion started by: demmel
8 Replies
10. Shell Programming and Scripting
Linux version : Oracle Linux 6.5
Shell : bash
In the the below text file (someString.text), I want to grep all lines with .sh in it. ie. Only the lines mysript.sh and anotherscript.sh should be returned.
My below attempts failed.
I gather that in regular expression world, dot (.) is the... (3 Replies)
Discussion started by: John K
3 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)