# Functions gathered from around the internet
extract () { # Extracts most common compressed files
        if [ -f $1 ] ; then
                case $1 in
                        *.tar.bz2)      tar xjf $1              ;;
                        *.tar.gz)       tar xzf $1              ;;
                        *.bz2)          bunzip2 $1              ;;
                        *.rar)          rar x $1                ;;
                        *.gz)           gunzip $1               ;;
                        *.tar)          tar xf $1               ;;
                        *.tbz2)         tar xjf $1              ;;
                        *.tgz)          tar xzf $1              ;;
                        *.zip)          unzip $1                ;;
                        *.Z)            uncompress $1   ;;      
                        *)                      echo "'$1' cannot be extracted via extract()" ;;
                esac    
        else    
                echo "'$1' is not a valid file"
        fi      
}       
maketar() { tar cvzf "${1%%/}.tar.gz"  "${1%%/}/"; }
makezip() { zip -r "${1%%/}.zip" "$1" ; }
psgrep() {
        if [ ! -z $1 ] ; then
                echo "Grepping for processes matching $1..."
                ps aux | grep $1 | grep -v grep
        else    
                echo "!! Need name to grep for"
        fi      
}       
gpass() { # Generates passwords
        local l=$1
        [ "$l" == "" ] && l=20
        tr -dc A-Za-z0-9-!@%^*_ < /dev/urandom | head -c ${l} | xargs
}     

#up() { # Usage: up <Number of directories>. Blank for up one dir.
#       local d=""
#       limit=$1
#       for((i=1 ; i <= limit ; i++)); do
#               d=$d/..
#    done
#       d=$(echo $d | sed 's/^\///')
#       if [ -z "$d" ]; then
#               d=..
#       fi
#       cd $d
#}
#dirsize - finds directory sizes and lists them for the current directory
dirsize (){
        du -shx * .[a-zA-Z0-9_]* 2> /dev/null | \
        egrep '^ *[0-9.]*[MG]' | sort -n > /tmp/list
        egrep '^ *[0-9.]*M' /tmp/list
        egrep '^ *[0-9.]*G' /tmp/list
        rm -rf /tmp/list
}       
myps() { ps $@ -u $USER -o pid,%cpu,%mem,bsdtime,command ; }
ii() {  # Get current host related info.
    echo -e "\nYou are logged on ${BRed}$HOST"
    echo -e "\n${BRed}Additionnal information:$NC " ; uname -a
    echo -e "\n${BRed}Users logged on:$NC " ; w -hs | cut -d " " -f1 | sort | uniq
    echo -e "\n${BRed}Current date :$NC " ; date
    echo -e "\n${BRed}Machine stats :$NC " ; uptime
    echo -e "\n${BRed}Memory stats :$NC " ; free
    echo -e "\n${BRed}Diskspace :$NC " ; mydf / $HOME
    echo -e "\n${BRed}Local IP Address :$NC" ; my_ip
    echo -e "\n${BRed}Open connections :$NC "; netstat -pan --inet;
    echo
}