[Linux] Bashrc alias to increase productivity

debian

# quick update
alias upgrade='apt-get update && apt-get upgrade && apt-get clean'

# Extract most know archives with one command
extract () {
    if [ -f $1 ] ; then
      case $1 in
        *.tar.bz2)   tar xjf $1     ;;
        *.tar.gz)    tar xzf $1     ;;
        *.bz2)       bunzip2 $1     ;;
        *.rar)       unrar e $1     ;;
        *.gz)        gunzip $1      ;;
        *.tar)       tar xf $1      ;;
        *.tbz2)      tar xjf $1     ;;
        *.tgz)       tar xzf $1     ;;
        *.zip)       unzip $1       ;;
        *.Z)         uncompress $1  ;;
        *.7z)        7z x $1        ;;
        *)     echo "'$1' cannot be extracted via extract()" ;;
         esac
     else
         echo "'$1' is not a valid file"
     fi
}

# Search for process
alias tm='ps -ef | grep'

# List all folders
alias lf='ls -Gl | grep ^d' #Only list directories
alias lsd='ls -Gal | grep ^d' #Only list directories, including hidden ones

# Show the most used commands
alias freq='cut -f1 -d" " ~/.bash_history | sort | uniq -c | sort -nr | head -n 30'

# Jump back n directories at a time
alias ..='cd ..'
alias ...='cd ../../'
alias ....='cd ../../../'
alias .....='cd ../../../../'
alias ......='cd ../../../../../'