Comandos de la terminal/head

• head

head

head [OPTION]... [FILE]...

       -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 lead‐
              ing '-', 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


[rrc@pridd ~]$ head /var/www/almastock.asambiental.mx/index.php 
<?php
  require_once( "includes/AlmastockFunctions.inc.php" );
  require_once( "includes/AlmastockConfig.php" );
  require_once( "/etc/Almastock.inc.php" );

  if( $_SERVER{'SERVER_PORT'} != 443 )
  {
    header( "Location: " . SSLURL );
    exit();
  }

[rrc@pridd ~]$ head -c 100 /var/www/almastock.asambiental.mx/index.php 
<?php
  require_once( "includes/AlmastockFunctions.inc.php" );
  require_once( "includes/AlmastockCo[rrc@pridd ~]$ 

[rrc@pridd ~]$ head -c -11500 /var/www/almastock.asambiental.mx/index.php 
<?php
  require_once( "includes/AlmastockFunctions.inc.php" );
  require_once( "includes/AlmastockConfig.php" );
  require_once( "/etc/Almastock.inc.php" );

  if( $_SERVER{'SERVER_PORT'} != 443 )
  {
    header( "Location: " . SSLURL

[rrc@pridd ~]$ head -n 7 /var/www/almastock.asambiental.mx/index.php 
<?php
  require_once( "includes/AlmastockFunctions.inc.php" );
  require_once( "includes/AlmastockConfig.php" );
  require_once( "/etc/Almastock.inc.php" );

  if( $_SERVER{'SERVER_PORT'} != 443 )
  {

[rrc@pridd ~]$ head -n -358 /var/www/almastock.asambiental.mx/index.php 
<?php
  require_once( "includes/AlmastockFunctions.inc.php" );
  require_once( "includes/AlmastockConfig.php" );
  require_once( "/etc/Almastock.inc.php" );

  if( $_SERVER{'SERVER_PORT'} != 443 )
  {

[rrc@pridd ~]$ head -vn -358 /var/www/almastock.asambiental.mx/index.php 
==> /var/www/almastock.asambiental.mx/index.php <==
<?php
  require_once( "includes/AlmastockFunctions.inc.php" );
  require_once( "includes/AlmastockConfig.php" );
  require_once( "/etc/Almastock.inc.php" );

  if( $_SERVER{'SERVER_PORT'} != 443 )
  {

[rrc@pridd ~]$ head --version
head (GNU coreutils) 8.20
Copyright (C) 2012 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.

Written by David MacKenzie and Jim Meyering.