Can anyone tell me how to remove a portion of a large file to smaller ones? What I have is a large file that was created becasue several similar files were joined together. Each individual file starts with MSG_HEAD. I want to take everything from MSG_HEAD up to were it says MSG_HEAD again and... (13 Replies)
hi i would like to know whether i can delete a part of a file in C
for eg. if my file contained
1234567890
and i want to delete
456
so that it becomes
1237890
is there a way i can do this.
well, one way i can achieve this is by creating a new file, copy whatever i want, then delete the... (2 Replies)
Hi,
I have a little problem. I am having a file with pattern like :
asdf;ffgg;dfjfj;djdfjf;nnjj;djd;ssj;
I just want to print the portion from last ";" upto the immediate previous ";". There are several ";" in my line.
Please help me out...
Thnx in advance (8 Replies)
I want to grep a portion of the log file. grepping a particular pattern and including 10 lines before that and after that occurence.
grep -n "SomeString Pattern" filename
10 lines before this occurence and 10 lines after that.
Please help. Need the simple script not in awk or sed. (9 Replies)
Alright, here's the deal. I'm running the following ruby script (output follows):
>> /Users/name/bin/acweather.rb -z 54321 -o /Users/name/bin -c
Clouds AND Sun 57/33 - Mostly sunny and cool
I want to just grab the "57/33" portion, but that's it. I don't want any other portion of the line. I... (5 Replies)
Hi ,
I am getting file name like
ABC_DATA_CUSTIOMERS_20120617.dat
ABC_DATA_PRODUCTS_20120617.dat
Need to convert
CUSTIOMERS.dat
PRODUCTS.dat
Help me how to do this. (7 Replies)
Need to sort a portion of a file in a Alphabetical Order.
Example : The user adam is not sorted and the user should get sorted. I don't want the complete file to get sorted.
Currently All_users.txt contains the following lines.
##############
# ARS USERS
##############
mike, Mike... (6 Replies)
Hi ladies and gentleman.. I have two text file with me. I need to replace one of the file content to another file if one both files have a matching pattern.
Example:
text1.txt:
ABCD 1234567,HELLO_WORLDA,HELLO_WORLDB
DCBA 3456789,HELLO_WORLDE,HELLO_WORLDF
text2.txt:
XXXX,ABCD... (25 Replies)
I'm trying to write a script that takes a file name in the form of Name_Num1_Num2.Extension and I want to separate the name portion and then use grep to see if that name part has any illegal characters in it.
I already have my grep command written and it works, I'm not sure how to separate the... (5 Replies)
Discussion started by: steezuschrist96
5 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)