commands unix

unix.txt

==== command TAR ====
Unzip file .tar.bz2
$ tar -xjf firefox-52.0a2.en-US.linux-x86_64.tar.bz2
==== DF ====
df [options] [devices]
Tamaño total del servidor, espacios en disco
$ df -H


=== Confira a versão do seu sistema, para isso, use o seguinte comando no terminal: ===
$ lsb_release -rs

=== Comando cat ==
Con -n se agrega el numero de linea
$ cat -n temp.txt

=== I find out my screen resolution from a shell script ===
$ xdpyinfo  | grep dimensions

=== Buscar archivos===
$ find . -iname 'odbc*.ini'

=== Permisos en archivos y carpetas===

=== Saber la resolución mínima, máxima y actual de tu pantalla ===
$ xrandr -q | grep -w Screen

=== Ver que version linux tengo ===
$ cat /etc/issue
> Ubuntu 14.04.3 LTS \n \l

=== Memoria del CPU ==
$ free -m
$ free -h
$ cat /proc/meminfo

=== Revisando la arquitectura de sistema  ===
~$ file /sbin/init
> /sbin/init: ELF 64-bit LSB  shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=7a4c688d009fc1f06ffc692f5f42ab09e68582b2, stripped

== PACKAGES ===
View files installed
$ dpkg -L udftools

=== HISTORY === 
Has a list of all the packages that was installed along with that command.
$ /var/log/apt/history.log

REVIEWING YOUR PREVIOUS BASH HISTORY
$ history
$ history | less

See the last 5 commands typed:
$ history 5

To find all of the history commands that involve a certain string, an easy way of getting an overview is to simply pipe it to grep :
$ history | grep cd


HOW DO I EXTRACT LOGIN HISTORY
command : LAST
The last command reads listing of last logged in users from the system file called /var/log/wtmp or the file designated by the -f options.
To find out when a particular user last logged in to the Linux or Unix server.
Syntax :
last
last [userNameHere]
last [tty]
last [options] [userNameHere]

Prints out the login/out history of user john, whereas running just
$ last eder

Prints out the login/out history of all users
$ last

http://www.cyberciti.biz/faq/linux-unix-last-command-examples/
http://www.cyberciti.biz/faq/linux-unix-last-command-examples/
https://es.wikipedia.org/wiki/Tty_(Unix)
http://www.thegeekstuff.com/2009/03/4-ways-to-identify-who-is-logged-in-on-your-linux-system/

== Problema de sonidos en laptop ASUS ==
http://www.ubuntu-es.org/node/56763
http://ubuntuforums.org/showthread.php?t=2165910
https://bbs.archlinux.org/viewtopic.php?id=176638
http://www.unixmen.com/2012003-howto-resolve-nosound-problem-on-ubuntu/

// Sublime error al identar XML solucion
https://github.com/alek-sys/sublimetext_indentxml/issues/16#issuecomment-78509626
http://askubuntu.com/questions/1224/how-do-i-determine-the-total-size-of-a-directory-folder-from-the-command-line