I have a file in which i have to search for a pattern from the beginning of the file and if the pattern is found , then i have to perform a reverse search from that line to the beginning of the file to get the first occurrence of another pattern.
sample input file
as like mentioned above, the files contains a lots of patterns like this.
for example i have the patttern "B2" as first pattern and if that is found , i have to get first occurence of "IM..." which is associated with it. This IM pattern may be immediately above B2 or a few lines above too
if you people have some idea, Please share with me
Hi,
I need to cut values after searching for similar patterns in a file. For example, I have the following pattern in a file:
####<Nov12 2007> <user: Vijay> <user id:123456 college:anna univ> <error code: runtime exception>
I need the values for
date:
User:
User id:
College:... (5 Replies)
how can I search for two or more patterns in one line using grep?
for example if I want to show only the lines that have patterns "abc" and "123"?
and what if I want to show only the lines that have either "abc" or "123" in them?
any hint apprecited (4 Replies)
Hi Gurus,
I have a file say for ex. file1 which has 3500 lines in it which are different account numbers and another file (file2) which has 230000 lines in it. I want to read all the lines in file1 and delete all those lines from file2 which has that same pattern as in file1. I am not quite... (4 Replies)
I have a situation where I need to search for multiple strings (error messages) such as 'aborted' 'file not found' etc in directory having logs. I have put all the error messages in a text file and using the command.
grep -f <textfile> <filetobegrepped>
I'm doing this thru a script where I... (5 Replies)
Hi,
I'm struggling to find an option for gzgrep to grep compressed files for multiple patterns preferanly using a pattern file (so pattern file can be altered seperately to rest of script).
My regex patterns are say:
4\{15\}
3\{13\}
/usr/xpg4/bin/grep will accept -f option but... (4 Replies)
Hi,
I have code like:
Output it is comming as:
Rels: WM2
Rels: WG2
Rels: 5
- pre/prods.pl
Rels: 6
Rels: 7
Rels: 8
Rels: 10
Rels: Int
But i want only "Rels: 5" pattern Just above "- pre/prods.pl".
By... (7 Replies)
Hi,
I need help to find patterns that are common or matched in a specified column in multiple files.
File1.txt
ID1 555
ID23 8857
ID4 4454
ID05 555
File2.txt
ID74 4454
ID96 555
ID322 4454 (4 Replies)
Hi,
I want to grep multiple patterns from multiple files and save to multiple outputs. As of now its outputting all to the same file when I use this command.
Input : 108 files to check for 390 patterns to check for. output I need to 108 files with the searched patterns.
Xargs -I {} grep... (3 Replies)
Hello,
I have attached 2 files
1) Original_table_definition.txt => which has definition of 3 tables
2) describe_table_output.txt => which has again 3 tables definition gotten thorugh doing a show table or describe table way.
Now difference between 3 tables are that tablea has no... (2 Replies)
Discussion started by: nv186000
2 Replies
LEARN ABOUT MINIX
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for lines containing a given pattern
SYNOPSIS
grep [-elnsv] pattern [file] ...
OPTIONS -e-e pattern is the same as pattern
-c Print a count of lines matched
-i Ignore case
-l Print file names, no lines
-n Print line numbers
-s Status only, no printed output
-v Select lines that do not match
EXAMPLES
grep mouse file # Find lines in file containing mouse
grep [0-9] file # Print lines containing a digit
DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions
accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1
occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a
match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is
returned.
SEE ALSO cgrep(1), fgrep(1), sed(1), awk(9).
GREP(1)