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Top Forums UNIX for Dummies Questions & Answers Counting no. of lines and printing it at the start of the file Post 302388085 by jenjen_mt on Tuesday 19th of January 2010 10:44:00 AM
Old 01-19-2010
Computer Counting no. of lines and printing it at the start of the file

Dear users,

I need to count the number of lines in a simple text file and print the number on the first line of that same file.

I know I can count the lines using

wc -l file.txt

this gives for example

100 file.txt

I need the number 100 to be printed at the very top of file.txt i.e above the existing text (I dont want the file.txt printed).

Any help much appreciated,
 

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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)
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