Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

head(1) [redhat man page]

HEAD(1) 								FSF								   HEAD(1)

NAME
head - output the first part of files SYNOPSIS
head [OPTION]... [FILE]... DESCRIPTION
Print 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=SIZE print first SIZE bytes -n, --lines=NUMBER print first NUMBER lines instead of first 10 -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 SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg. AUTHOR
Written by David MacKenzie. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. 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 head should give you access to the complete manual. head (coreutils) 4.5.3 February 2003 HEAD(1)

Check Out this Related Man Page

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=[-]N print the first N bytes of each file; with the leading `-', print all but the last N bytes of each file -n, --lines=[-]N print the first N lines instead of the first 10; with the leading `-', print all but the last N 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 N 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/> COPYRIGHT
Copyright (C) 2009 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 7.1 July 2010 HEAD(1)
Man Page

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Simple Command (head) Question

Okay, this probably sounds dumb for anyone who knows the answer, but I'm completely lost. I have to use the head command to search a directory AND all of its subdirectories to display the first line of all .txt files. I know how to do this: head -1 ~/UnixCourse/*.txt, but that does not search the... (4 Replies)
Discussion started by: jbud
4 Replies

2. Shell Programming and Scripting

head command

Hi All, How can the head command be used to extract only a particular line. By default head -n filename displays the first n lines. I want only the nth line. I couldn't get it from forum search. Thanks, Sumesh (6 Replies)
Discussion started by: sumesh.abraham
6 Replies

3. UNIX for Dummies Questions & Answers

head command wont work on MF file

I am trying to do a head on a mainframe file and on doing ti just gives me a blank screen with nothing on it. however, when i do a tail for the same file...i get a few lines on the screen. i know tht mainframe files have all the records on one line...does this have to do something with this.... (10 Replies)
Discussion started by: alfredo123
10 Replies

4. Shell Programming and Scripting

Splitting of a file

hi, i have a requirement in which i have to split a file into 3 files...mainly the header, data, and tariler part, the value for header and trialer keeps on changing....so if i have a file with 2 header nd 3 trialer records nd a file is coming like this 1 2 3 4 5 6 7 how ill i go about it,... (4 Replies)
Discussion started by: zeusss
4 Replies

5. Shell Programming and Scripting

head usage

$ct=1 head -n $ct file. When i used like this, i got an error , Bad usage of head Cant we use variables in place of number in HEAD. In my requirement for every iteration i should increase the number in Head and tail the last one. HOw can i achieve this (5 Replies)
Discussion started by: vasuarjula
5 Replies

6. 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

7. Shell Programming and Scripting

Help Please

I have a file that with 15 lines and i have to display the 5th and 8th records i tried using the cut -f5,8 filename but its display blank lines i thought maybe i have to use the head and tails optin but not sure how to use that..... can some one give me a hint please thank you (4 Replies)
Discussion started by: kerryann09
4 Replies

8. Shell Programming and Scripting

cutting lines

Dear All, Is there a way to cut the lines that have been "head" Here is what i m trying to do Please advice there is file name dummy.txt now i am trying to head this file 4 time by using a loop and every time this file is head with different values e.g in first instance it will... (7 Replies)
Discussion started by: jojo123
7 Replies

9. Shell Programming and Scripting

print decimal values

Hi guys I'm trying to print average of 2 columns. awk '{print ($1+$2)/2}' file.txt Its printing average but not giving decimal values its giving 3.05521e+08 instead of 305521.... I tried %f to print float values but not quiet connected Could you help plz:confused: (5 Replies)
Discussion started by: repinementer
5 Replies

10. Shell Programming and Scripting

Perl: Printing Multiple Lines after pattern match

Hello People, Need some assistance/guidance. OUTLINE: Two files (File1 and File2) File1 has some ids such as 009463_3922_1827 897654_8764_5432 File2 has things along the lines of: Query= 009463_3922_1827 length=252 (252 letters) More stufff here ... (5 Replies)
Discussion started by: Deep9000
5 Replies

11. OS X (Apple)

Help with head -q option on Mac OS X

I am trying to run a csh script (this is usually done on my Linux machine but it died, so I had to resort to a Mac :eek:) and I received the following error message: head: illegal option --q My script takes multiple files as the input, concatenates them and produces a single file as the... (4 Replies)
Discussion started by: mac_novice
4 Replies

12. UNIX for Advanced & Expert Users

does head create new file

hi, Here my doubt is can we create a file using head/tail command in unix. for example: my file consists 2000 lines , i want to cut it into 2. does this work please give correct command line. head -1000 abc.txt > acd.txt tail -1000 abc.txt > bdc.txt hi, Here my doubt is can we... (5 Replies)
Discussion started by: chittisri
5 Replies

13. Shell Programming and Scripting

appending the count of line in each file at head of each file

hello everybody, I have some files in directory.each file contain some data. my requirement is add the count of each line of file in head of each file. any advice !!!!!!!! (4 Replies)
Discussion started by: abhigrkist
4 Replies

14. Shell Programming and Scripting

To get specified lines from file

Hi, I have a file which contains 100 lines. Now i need to get lines from 45-50 only. For this i used head and tail command . But i want to get this using single command instead of two commands(head and tail) -> is it possble to get with single command ? if so How ? Thanks in advance. (6 Replies)
Discussion started by: krishna_gnv
6 Replies

15. Shell Programming and Scripting

Modify record headers from file

Dear All I was wondering if anybody is able to help me with a script I am struggling with. I have to add comments to the "head-lines" (start with >) from an other file according to the ID tag. Only the head lines should be modified. cat File.txt >H1_A1_A2_A3_A4_ID1_A5 A:B:C:S:E:E:K... (4 Replies)
Discussion started by: loba
4 Replies