10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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
2. Shell Programming and Scripting
Hi guys,
I was wondering if there was an easy solution, using tcsh, to print out lines that appear twice with a given pattern in a file?
So if I am looking for lines with "test" in a given file that contains:
blah
test blah1
blah //don't print this out as it doesn't have... (3 Replies)
Discussion started by: chu816
3 Replies
3. Shell Programming and Scripting
Hi,
I'm trying to auto generate some php files with a default preamble at the top which is a block comment.
The problem is that my output has no new lines and it looks like the output from "ls" is being printed after everyline
This is my code
#!/bin/bash
read -d '' pre_amble... (1 Reply)
Discussion started by: racshot65
1 Replies
4. UNIX for Dummies Questions & Answers
hay i need to display middle line:
1
2
3
4
5
how can i display 3-4? (6 Replies)
Discussion started by: margan_ron
6 Replies
5. Shell Programming and Scripting
Hello,
I want to print a number of lines of a file after a specific expression of a line.
I have this sed command but it prints only 1 line after the expression.
How could I adapt it to print for instance 10 lines after or 15 lines after ?
sed -n '/regexp/{n;p;}'
Thx & Regs,
Rany. (5 Replies)
Discussion started by: rany1
5 Replies
6. UNIX for Dummies Questions & Answers
Assume that the text file contains over 40 lines. How do you do this?!?!? (5 Replies)
Discussion started by: phunkypants
5 Replies
7. UNIX for Dummies Questions & Answers
I am trying to print a simple ascii file but it comes out as a staggered output. I know there's a simple solution but can't remember it, am a little rusty.
eg. a file that look like
aa
bbb
cccc
would print out like
aa
bbb
ccccc
Any pointers would be... (5 Replies)
Discussion started by: lordvoldemort
5 Replies
8. Shell Programming and Scripting
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
9. UNIX for Dummies Questions & Answers
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... (2 Replies)
Discussion started by: jenjen_mt
2 Replies
10. UNIX for Dummies Questions & Answers
as the title, I had try use "wc -l test.txt" but it give me "<many spaces> 384 test.txt" but the result I want is just "384" could any person can help me that?
Thx:( (5 Replies)
Discussion started by: a8111978
5 Replies
HEAD(1) User Commands HEAD(1)
NAME
head - output the first part of files
SYNOPSIS
head [OPTION]... [FILE]...
DESCRIPTION
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With
no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-c, --bytes=[-]K
print the first K bytes of each file; with the leading `-', print all but the last K bytes of each file
-n, --lines=[-]K
print the first K lines instead of the first 10; with the leading `-', print all but the last K lines of each file
-q, --quiet, --silent
never print headers giving file names
-v, --verbose
always print headers giving file names
--help display this help and exit
--version
output version information and exit
K may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P,
E, Z, Y.
AUTHOR
Written by David MacKenzie and Jim Meyering.
REPORTING BUGS
Report head bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report head translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for head is maintained as a Texinfo manual. If the info and head programs are properly installed at your site, the
command
info coreutils 'head invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 HEAD(1)