Hello,
How do I use grep to find a pattern in a list of file and then display 5 lines after the pattern is matched
Eg:
I want to match the string GetPresentCode in all files in a folder and then see 4 lines following this match. I am not sure if grep is what should be used to achieve. Thanks!
Hi
How to prevent grep command from throwing a system trap(or returning error status) if No match is found in the specified file(s) ?
Consider this simple shell script:
#!/usr/bin/ksh
trap 'STATUS=$?;set +x;echo;echo error $STATUS at line nb $LINENO executing :\
`sed -n... (2 Replies)
Hi i'm new to the forum and was hoping someone could help me with the following query.
I do alot of testing and have hundreds of log files output. I have a script (someone else wrote) which finds all the passed and failed logs and puts a number in a column onto a webpage:
e.g:
Pass ... (4 Replies)
Hi,
I need something unusual, I guess. I need to start a process, and if that process displays a specific error message, I need to kill that process and restart it.
Something like:
startprocess | grep -i "This is the specific error message" && kill $pidof(startprocess)
Explanation, I need... (4 Replies)
Hello, can someone help me how to find a word and 2 lines after it and then send the output to another file.
For example, here is myfile1.txt. I want to search for "Error" and 2 lines below it and send it to myfile2.txt
I tried with grep -A but it's not supported on my system.
I tried with awk,... (4 Replies)
I have a file like this
DoctorName
Address1
Address2
DOB
InsuredName
Address1
Address2
DOB
PatientName
Address1
Address2
DOB
ClaimNo1
DoctorName
Address1
Address2
DOB
InsuredName (2 Replies)
I have a file which has collection of segments occuring n(For eg.100) times
ISA
GS
ST
NM1*85
N3
N4
NM1*IL
N3
N4
REF*D9*1001
ISE
GE
SE
ISA
GS
ST
NM1*85
N3 (13 Replies)
Hi,
Need help to grep the following from a file x. I just want to grep exact match not lines and not partial word.
CONFSUCCESS
CONFFAIL
CONFPARTIALSUCCESS
>cat x
xczxczxczc zczczcxx CONFSUCCESS czczczcczc
czxxczxzxczcczc CONFFAIL xczxczcxcczczc
zczczczcz CONFPARTIALSUCCESS czczxcxzc
... (4 Replies)
URGENT HELP IS NEEDED!!
I am looking to move matching lines (01 - 07) from File1 and 77 tab the matching string from File2, to File3.txt. I am almost done but
- Currently, script is not printing lines to File3.txt in order.
- Also the matching lines are not moving out of File1.txt
... (1 Reply)
I need to help to work this
Print everything between 2 patterns if grep is not found the search word
example
Detroit
orange
cat
bat
rat
apple
sed -n "/Detroit,/apple/p" d |grep chicago
output would be
Detroit
orange
cat
bat
rat (1 Reply)
Discussion started by: jhonnyrip
1 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). 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.
-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.
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 '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)