Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Searching for lines in a file? Post 302308731 by Sepia on Monday 20th of April 2009 06:45:39 AM
Old 04-20-2009
Thank you very much.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed searching across lines

hi, i'm making now a bash script, that runs some compiler... i want to take only errors form its output eg: output: bla bla bla ... erros is 1324546 the bla bla bla bla bla bla... ... and i want to get only erros is 1324546 the bla bla bla (11 Replies)
Discussion started by: miechu
11 Replies

2. Shell Programming and Scripting

lines searching >>

hi guys! I`ll really appreciate your help. The situation is: i have a log file, and i need to get the needed lines from it. linecount=$(cat -n http.log | grep ALERT | awk '{print $1}' | wc -l) lines=$(cat -n http.log | grep ALERT | awk '{print $1}') 1-string gets the number of found lines... (2 Replies)
Discussion started by: neverhood
2 Replies

3. Shell Programming and Scripting

searching thru or combining multiple lines in a unix file

This is the problem actually: This regex: egrep "low debug.*\".*\"" $dbDir/alarmNotification.log is looking for data between the two quotation marks: ".*\" When I hate data like this: low debug 2009/3/9 8:30:20.47 ICSNotificationAlarm Prodics01ics0003 IC... (0 Replies)
Discussion started by: ndedhia1
0 Replies

4. Shell Programming and Scripting

Searching for lines ending with }

I'm trying to search for lines ending with "}" with the following command but am not getting any output. grep '\}$' myFile.txt I actually want to negate this (i.e. lines not ending with "}"), but I guess that should be easier once I find the command that finds it? (11 Replies)
Discussion started by: BootComp
11 Replies

5. Shell Programming and Scripting

Searching patterns in 1 file and deleting all lines with those patterns in 2nd file

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)
Discussion started by: toms
4 Replies

6. Shell Programming and Scripting

Searching the lines within a range of time period in a text file

Dear All, Please advice me, I have a text file with one field date and time like below given. I need to find out the lines whchi content the time stamp between Wed May 26 11:03:11 2010 and Wed May 26 11:03:52 2010 both can be included, using awk command which could be an interactive so that I... (6 Replies)
Discussion started by: chinmayadalai
6 Replies

7. Shell Programming and Scripting

Searching for lines in textfiles

Hello all, I've a problem. I've two logfiles and i need to find lines in the second file by using information from the first file. First I need to extract a searchpattern from the first file. Its like abc=searchpattern&cde=. All between abc= and &cde= is the pattern I need to find in the second... (2 Replies)
Discussion started by: Avarion
2 Replies

8. Shell Programming and Scripting

searching a file with a specified text without using conventional file searching commands

without using conventional file searching commands like find etc, is it possible to locate a file if i just know that the file that i'm searching for contains a particular text like "Hello world" or something? (5 Replies)
Discussion started by: arindamlive
5 Replies

9. Shell Programming and Scripting

Searching inverted lines

Hi fellas, I have a file like this: A_B B_D C_D D_B E_F G_H B_A F_E In other words, I have member1_member2 and member2_member1 in the same file. In the exemple aforementioned I have A_B and B_A, B_D and D_B, E_F and F_E. So, I would like to know a sript that print the lines B_A, D_B... (3 Replies)
Discussion started by: valente
3 Replies

10. UNIX for Dummies Questions & Answers

Grep -B used with -f? (Searching a file using a list of terms, output is lines before each match)

(1 Reply)
Discussion started by: Twinklefingers
1 Replies
cat(1)							      General Commands Manual							    cat(1)

Name
       cat - concatenate and print data

Syntax
       cat [ -b ] [ -e ] [ -n ] [ -s ] [ -t ] [ -u ] [ -v ] file...

Description
       The  command reads each file in sequence and displays it on the standard output.  Therefore, to display the file on the standard output you
       type:
       cat file
       To concatenate two files and place the result on the third you type:
       cat file1 file2 > file3
       To concatenate two files and append them to a third you type:
       cat file1 file2 >> file3
       If no input file is given, or if a minus sign (-) is encountered as an argument, reads from the standard input file.  Output is buffered in
       1024-byte blocks unless the standard output is a terminal, in which case it is line buffered.  The utility supports the processing of 8-bit
       characters.

Options
       -b   Ignores blank lines and precedes each output line with its line number.

       -e   Displays a dollar sign ($) at the end of each output line.

       -n   Precedes all output lines (including blank lines) with line numbers.

       -s   Squeezes adjacent blank lines from output and single spaces output.

       -t   Displays non-printing characters (including tabs) in output.  In addition to those representations used with the -v  option,  all  tab
	    characters are displayed as ^I.

       -u   Unbuffers output.

       -v   Displays  non-printing  characters (excluding tabs and newline) as the ^x.	If the character is in the range octal 0177 to octal 0241,
	    it is displayed as M-x. The delete character (octal 0177) displays as ^?.  For example, is displayed as ^X.

See Also
       cp(1), ex(1), more(1), pr(1), tail(1)

																	    cat(1)
All times are GMT -4. The time now is 01:06 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy