Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Counting no. of lines and printing it at the start of the file Post 302388102 by thegeek on Tuesday 19th of January 2010 12:03:17 PM
Old 01-19-2010
If your sed has -i feature,

Code:
$ cat > testfile
testing line1
testing line2
$ 
$ numberoflines=`wc -l < testfile`
$ sed -i "1s/^/$numberoflines/" testfile 
$ cat testfile 
2testing line1
testing line2

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Counting The Number Of Duplicate Lines In a File

Hello. First time poster here. I have a huge file of IP numbers. I am trying to output only the class b of the IPs and rank them by most common and output the total # of duplicate class b's before the class b. An example is below: 12.107.1.1 12.107.9.54 12.108.3.89 12.109.109.4 12.109.6.3 ... (2 Replies)
Discussion started by: crunchtime
2 Replies

2. UNIX for Dummies Questions & Answers

Counting no of lines between two strings in a file

Hi all, I'm very very new to UNIX and AWK world.Please help me in finding a solution for my problem. I'm having a file like this ----------------------------------------------------------------- ~Version Information VERS. 2.0: CWLS log ASCII Standard -VERSION 2.0 WRAP. ... (4 Replies)
Discussion started by: santyshyam
4 Replies

3. Shell Programming and Scripting

printing first n lines in a file without using head

i have to print first n lines of a file. how can i do that without using head command. for some reason i do not want to use Head. is there a way to get that result using awk or sed?. i an using this on korn shell for AIX Thanks.. (7 Replies)
Discussion started by: dareman123
7 Replies

4. Shell Programming and Scripting

Counting similar lines from file UNIX

I have a file which contains data as below: nbk1j7o pageName=/jsp/RMBS/RMBSHome.jsf nbk1j7o pageName=/jsp/RMBS/RMBSHome.jsf nbk1j7o pageName=/jsp/RMBS/RMBSHome.jsf nbk1j7o pageName=/jsp/RMBS/RMBSHome.jsf nbk1j7o pageName=/jsp/common/index.jsf nbk1j7o pageName=/jsp/common/index.jsf nbk1wqe... (6 Replies)
Discussion started by: mohsin.quazi
6 Replies

5. Shell Programming and Scripting

Counting lines in each block file

hello im new here so i want to say hi everybody :) i have to write a script and im newbie :/ i hope that in this forum are many ppl who knows subject :) i have hundrets folders. in each folder is a file name trace.txt. each trace.txt has a lot of tracert's results separates with "-----" it... (6 Replies)
Discussion started by: michael8484
6 Replies

6. Shell Programming and Scripting

printing lines to a file from a particular string

Hi, A very Good Evening to All, I am writing a script for my application. I have a file with 1000 lines. Among that 1000 lines i am searching for a particular string. And from that string i need to pull all the data in to a seperate file. For example the contents of my file is as below. ... (4 Replies)
Discussion started by: intiraju
4 Replies

7. UNIX for Dummies Questions & Answers

syntax for counting & printing record count

Hi I have a complex script which outputs a text file for loading into a db. I now need to enhance this script do that I can issue an ‘lp' command to show the count of the number of records in this file. Can anybody give me the necessary syntax ? (2 Replies)
Discussion started by: malts18
2 Replies

8. Shell Programming and Scripting

Printing the lines that appear in an other file, and the three lines after them

Hi ! I need some help with a script I am writing. I am trying to compare two files, the first file being in this format : Header1 Text1-1 Text1-2 Text1-3 Header2 Text2-1 etc... For each header, I want to check if it appears in the second file, and if it is the case print the header... (4 Replies)
Discussion started by: jbi
4 Replies

9. Shell Programming and Scripting

Counting lines in a file using awk

I want to count lines of a file using AWK (only) and not in the END part like this awk 'END{print FNR}' because I want to use it. Does anyone know of a way? Thanks a lot. (7 Replies)
Discussion started by: guitarist684
7 Replies

10. Shell Programming and Scripting

Printing string from last field of the nth line of file to start (or end) of each line (awk I think)

My file (the output of an experiment) starts off looking like this, _____________________________________________________________ Subjects incorporated to date: 001 Data file started on machine PKSHS260-05CP ********************************************************************** Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies
SARY(1) 							       Sary								   SARY(1)

NAME
sary - manual page for sary 1.0.2 SYNOPSIS
sary [OPTION]... PATTERN FILE DESCRIPTION
-c, --count only print a count of occurrences -i, --ignore-case ignore case distinctions -l, --lexicographical sort in lexicographical order -A, --after-context=NUM print NUM lines of trailing context -B, --before-context=NUM print NUM lines of leading context -C, --context=[NUM], print NUM (default 2) lines of output context -s, --start=TAG, print tagged region. set start tag to TAG -e, --end=TAG, print tagged region. set end tag to TAG -h, --help display this help and exit COPYRIGHT
Copyright (C) 2000 Satoru Takabayashi All rights reserved. This is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. sary 1.0.2 December 2000 SARY(1)
All times are GMT -4. The time now is 08:00 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy