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)
Check Out this Related 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)
Hello!
Is it anyone who might know how to extract the n last lines from a file, typically the 1000 last? Until know I have used sed -n np filename, but it takes each line separately, and is hence very time consuming.
Thank you in advance! (3 Replies)
I'm sorry, but the example in the man pages was no help.
I know head -5 fileName will give you the first 5 lines of the file but how do you get like the 6th-13th lines only or one line before the end of the file? Sorry I just started learning the basics..... =( (3 Replies)
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)
$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)
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)
Hi to all,
I have a file with 1000 lines,Now i need to get 789th record.So please any one help me out from this.
Thanks in advance.
Sathish (3 Replies)
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)
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)
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)
if the file test include
1233
0.123
0.128
0.165
0.14
14.5
134556
48968
can i show the output value > 1000 by command grep or awk or...?
1233
134556
48968
Thank you. (6 Replies)
I have a text file with 1000 lines, I want to randomly select 200 lines from it and print them as output. How do I go about doing that? Thanks! (7 Replies)
Hi,
If I have loads of logs like below and I am interested to print the requests(lines) which have taken more than 1000 ms. In this case how could I print the two highlighted lines ?
abc.log
reqquest id232342 , adfghfasdfsaf, TIME=30
reqquest id11111 , asdfdfghdffsaf, TIME=54
reqquest... (4 Replies)
Gents,
I will like to print continues names according to a range of numbers
example
first number
1000
last number
1005
I would like to get the following result
tape1000 tape1001 tape 1002 tape1003 tape1004 tape1005.
Thanks for your support. (4 Replies)
Hello everybody,
I've got the following problem:
The data set I have is an ASCII file containing a header over 4 lines and the actual data comprised of dezimal numbers in a 1000x1000 grid (1000 lines and 1000 columns).
Since I want to plot the data in GMT I need to convert it into the... (3 Replies)
Morning ..
I have a file with approximately 1000 lines. I want to check that the file contains, for example, 100 lines.
Something like whats given below is ugly. And even if I create a function I have to call it 100 times.
I may need to look through multiple files at times.
Is there a... (4 Replies)