bash_aliases.sh

#1: Control ls command output 

## Colorize the ls output ##
alias ls='ls --color=auto'

## Use a long listing format ##
alias ll='ls -la'

## Show hidden files ##
alias l.='ls -d .* --color=auto'

#2: Control cd command behavior 

## get rid of command not found ##
alias cd..='cd ..'

## a quick way to get out of current directory ##
alias ..='cd ..'
alias ...='cd ../../../'
alias ....='cd ../../../../'
alias .....='cd ../../../../'
alias .4='cd ../../../../'
alias .5='cd ../../../../..'

#3: Control grep command output 

## Colorize the grep command output for ease of use (good for log files)##
alias grep='grep --color=auto'
alias egrep='egrep --color=auto'
alias fgrep='fgrep --color=auto'
#4: Start calculator with math support 

alias bc='bc -l'

#4: Generate sha1 digest 

alias sha1='openssl sha1'

#5: Create parent directories on demand  
alias mkdir='mkdir -pv'

#6: Colorize diff output 
# You can compare files line by line using diff and use a tool called colordiff to colorize diff output:

# install  colordiff package :)
alias diff='colordiff'

#7: Make mount command output pretty and human readable format 

alias mount='mount |column -t'

#8: Command short cuts to save time 

# handy short cuts #
alias h='history'
alias j='jobs -l'

#9: Create a new set of commands 

alias path='echo -e ${PATH//:/\\n}'
alias now='date +"%T'
alias nowtime=now
alias nowdate='date +"%d-%m-%Y"'

#10: Set vim as default 

alias vi=vim
alias svi='sudo vi'
alias vis='vim "+set si"'
alias edit='vim'

#11: Control output of networking tool called ping 

# Stop after sending count ECHO_REQUEST packets #
alias ping='ping -c 5'
# Do not wait interval 1 second, go fast #
alias fastping='ping -c 100 -s.2'

#12: Show open ports 
# Use netstat command to quickly list all TCP/UDP port on the server:

alias ports='netstat -tulanp'

#13: Wakeup sleeping servers 

## replace mac with your actual server mac address #
alias wakeupnas01='/usr/bin/wakeonlan 00:11:32:11:15:FC'
alias wakeupnas02='/usr/bin/wakeonlan 00:11:32:11:15:FD'
alias wakeupnas03='/usr/bin/wakeonlan 00:11:32:11:15:FE'

#14: Control firewall (iptables) output 
## Netfilter is a host-based firewall for Linux operating systems. 
## It is included as part of the Linux distribution and it is activated by default. 
## common iptables solutions required by a new Linux user to secure his or her Linux operating system from intruders:

## shortcut  for iptables and pass it via sudo#
alias ipt='sudo /sbin/iptables'

# display all rules #
alias iptlist='sudo /sbin/iptables -L -n -v --line-numbers'
alias iptlistin='sudo /sbin/iptables -L INPUT -n -v --line-numbers'
alias iptlistout='sudo /sbin/iptables -L OUTPUT -n -v --line-numbers'
alias iptlistfw='sudo /sbin/iptables -L FORWARD -n -v --line-numbers'
alias firewall=iptlist

#15: Debug web server / cdn problems with curl 

# get web server headers #
alias header='curl -I'

# find out if remote server supports gzip / mod_deflate or not #
alias headerc='curl -I --compress'

#16: Add safety nets 

# do not delete / or prompt if deleting more than 3 files at a time #
alias rm='rm -I --preserve-root'

# confirmation #
alias mv='mv -i'
alias cp='cp -i'
alias ln='ln -i'

# Parenting changing perms on / #
alias chown='chown --preserve-root'
alias chmod='chmod --preserve-root'
alias chgrp='chgrp --preserve-root'

#17: Update Debian Linux server 

# distro specific  - Debian / Ubuntu and friends #
# install with apt-get
alias apt-get="sudo apt-get"
alias updatey="sudo apt-get --yes"

# update on one command 
alias update='sudo apt-get update && sudo apt-get upgrade'

#18: Update RHEL / CentOS / Fedora Linux server 

## distrp specifc RHEL/CentOS ##
alias update='yum update'
alias updatey='yum -y update'

#19: Tune sudo and su 

# become root #
alias root='sudo -i'
alias su='sudo -i'

#20: Pass halt/reboot via sudo 

# reboot / halt / poweroff
alias reboot='sudo /sbin/reboot'
alias poweroff='sudo /sbin/poweroff'
alias halt='sudo /sbin/halt'
alias shutdown='sudo /sbin/shutdown'

#21: Control web servers 

# also pass it via sudo so whoever is admin can reload it without calling you #
alias nginxreload='sudo /usr/local/nginx/sbin/nginx -s reload'
alias nginxtest='sudo /usr/local/nginx/sbin/nginx -t'
alias lightyload='sudo /etc/init.d/lighttpd reload'
alias lightytest='sudo /usr/sbin/lighttpd -f /etc/lighttpd/lighttpd.conf -t'
alias httpdreload='sudo /usr/sbin/apachectl -k graceful'
alias httpdtest='sudo /usr/sbin/apachectl -t && /usr/sbin/apachectl -t -D DUMP_VHOSTS'

#22: Alias into our backup stuff 

# if cron fails or if you want backup on demand just run these commands # 
# again pass it via sudo so whoever is in admin group can start the job #
# Backup scripts #
alias backup='sudo /home/scripts/admin/scripts/backup/wrapper.backup.sh --type local --taget /raid1/backups'
alias nasbackup='sudo /home/scripts/admin/scripts/backup/wrapper.backup.sh --type nas --target nas01'
alias s3backup='sudo /home/scripts/admin/scripts/backup/wrapper.backup.sh --type nas --target nas01 --auth /home/scripts/admin/.authdata/amazon.keys'
alias rsnapshothourly='sudo /home/scripts/admin/scripts/backup/wrapper.rsnapshot.sh --type remote --target nas03 --auth /home/scripts/admin/.authdata/ssh.keys --config /home/scripts/admin/scripts/backup/config/adsl.conf'
alias rsnapshotdaily='sudo  /home/scripts/admin/scripts/backup/wrapper.rsnapshot.sh --type remote --target nas03 --auth /home/scripts/admin/.authdata/ssh.keys  --config /home/scripts/admin/scripts/backup/config/adsl.conf'
alias rsnapshotweekly='sudo /home/scripts/admin/scripts/backup/wrapper.rsnapshot.sh --type remote --target nas03 --auth /home/scripts/admin/.authdata/ssh.keys  --config /home/scripts/admin/scripts/backup/config/adsl.conf'
alias rsnapshotmonthly='sudo /home/scripts/admin/scripts/backup/wrapper.rsnapshot.sh --type remote --target nas03 --auth /home/scripts/admin/.authdata/ssh.keys  --config /home/scripts/admin/scripts/backup/config/adsl.conf'
alias amazonbackup=s3backup

#23: Desktop specific - play avi/mp3 files on demand 

## play video files in a current directory ##
# cd ~/Download/movie-name 
# playavi or vlc 
alias playavi='mplayer *.avi'
alias vlc='vlc *.avi'

# play all music files from the current directory #
alias playwave='for i in *.wav; do mplayer "$i"; done'
alias playogg='for i in *.ogg; do mplayer "$i"; done'
alias playmp3='for i in *.mp3; do mplayer "$i"; done'

# play files from nas devices #
alias nplaywave='for i in /nas/multimedia/wave/*.wav; do mplayer "$i"; done'
alias nplayogg='for i in /nas/multimedia/ogg/*.ogg; do mplayer "$i"; done'
alias nplaymp3='for i in /nas/multimedia/mp3/*.mp3; do mplayer "$i"; done'

# shuffle mp3/ogg etc by default #
alias music='mplayer --shuffle *'

#24: Set default interfaces for sys admin related commands 
## vnstat is console-based network traffic monitor. dnstop is console tool to analyze DNS traffic. tcptrack and iftop commands displays information about TCP/UDP connections it sees on a network interface and display bandwidth usage on an interface by host respectively.

## All of our servers eth1 is connected to the Internets via vlan / router etc  ##
alias dnstop='dnstop -l 5  eth1'
alias vnstat='vnstat -i eth1'
alias iftop='iftop -i eth1'
alias tcpdump='tcpdump -i eth1'
alias ethtool='ethtool eth1'

# work on wlan0 by default #
# Only useful for laptop as all servers are without wireless interface
alias iwconfig='iwconfig wlan0'

#25: Get system memory, cpu usage, and gpu memory info quickly 

## pass options to free ## 
alias meminfo='free -m -l -t'

## get top process eating memory
alias psmem='ps auxf | sort -nr -k 4'
alias psmem10='ps auxf | sort -nr -k 4 | head -10'

## get top process eating cpu ##
alias pscpu='ps auxf | sort -nr -k 3'
alias pscpu10='ps auxf | sort -nr -k 3 | head -10'

## Get server cpu info ##
alias cpuinfo='lscpu'

## older system use /proc/cpuinfo ##
##alias cpuinfo='less /proc/cpuinfo' ##

## get GPU ram on desktop / laptop## 
alias gpumeminfo='grep -i --color memory /var/log/Xorg.0.log'

#26: Control Home Router  
# Reboot my home Linksys WAG160N / WAG54 / WAG320 / WAG120N Router / Gateway from *nix.
alias rebootlinksys="curl -u 'admin:my-super-password' 'http://192.168.1.2/setup.cgi?todo=reboot'"

# Reboot tomato based Asus NT16 wireless bridge 
alias reboottomato="ssh [email protected] /sbin/reboot"

#27 Resume wget by default 
 ## this one saved by butt so many times ##
alias wget='wget -c'

#28 Use different browser for testing website 
 alias ff4='/opt/firefox4/firefox'
alias ff13='/opt/firefox13/firefox'
alias chrome='/opt/google/chrome/chrome'
alias opera='/opt/opera/opera'

#default ff 
alias ff=ff13

#my default browser 
alias browser=chrome

#29: A note about ssh alias 
# Do not create ssh alias, instead use ~/.ssh/config OpenSSH SSH client configuration files. It offers more option. An example:

# Host server10
#   Hostname 1.2.3.4
#   IdentityFile ~/backups/.ssh/id_dsa
#   user foobar
#   Port 30000
#   ForwardX11Trusted yes
#   TCPKeepAlive yes

# You can now connect to peer1 using the following syntax:
$ ssh server10
#30: It's your turn to share...

## set some other defaults ##
alias df='df -H'
alias du='du -ch'

# top is atop, just like vi is vim
alias top='atop'

## nfsrestart  - must be root  ##
## refresh nfs mount / cache etc for Apache ##
alias nfsrestart='sync && sleep 2 && /etc/init.d/httpd stop && umount netapp2:/exports/http && sleep 2 && mount -o rw,sync,rsize=32768,wsize=32768,intr,hard,proto=tcp,fsc natapp2:/exports /http/var/www/html &&  /etc/init.d/httpd start'

## Memcached server status  ##
alias mcdstats='/usr/bin/memcached-tool 10.10.27.11:11211 stats'
alias mcdshow='/usr/bin/memcached-tool 10.10.27.11:11211 display'

## quickly flush out memcached server ##
alias flushmcd='echo "flush_all" | nc 10.10.27.11 11211'

## Remove assets quickly from Akamai / Amazon cdn ##
alias cdndel='/home/scripts/admin/cdn/purge_cdn_cache --profile akamai'
alias amzcdndel='/home/scripts/admin/cdn/purge_cdn_cache --profile amazon'

## supply list of urls via file or stdin
alias cdnmdel='/home/scripts/admin/cdn/purge_cdn_cache --profile akamai --stdin'
alias amzcdnmdel='/home/scripts/admin/cdn/purge_cdn_cache --profile amazon --stdin'

# Conclusion 
# This post summaries several types of uses for *nix bash aliases:
# 	1.	Setting default options for a command (e.g. set eth0 as default option - alias ethtool='ethtool eth0' ).
# 	2.	Correcting typos (cd.. will act as cd .. via alias cd..='cd ..').
# 	3.	Reducing the amount of typing.
# 	4.	Setting the default path of a command that exists in several versions on a system (e.g. GNU/grep is located at /usr/local/bin/grep and Unix grep is located at /bin/grep. To use GNU grep use alias grep='/usr/local/bin/grep' ).
# 	5.	Adding the safety nets to Unix by making commands interactive by setting default options. (e.g. rm, mv, and other commands).
# 	6.	Compatibility by creating commands for older operating systems such as MS-DOS or other Unix like operating systems (e.g. alias del=rm ).