extract () { if [ -f $1 ] ; then case $1 in *.tar.bz2) tar xvjf $1 ;; *.tar.gz) tar xvzf $1 ;; *.bz2) bunzip2 $1 ;; *.rar) unrar x $1 ;; *.gz) gunzip $1 ;; *.tar) tar xvf $1 ;; *.tbz2) tar xvjf $1 ;; *.tgz) tar xvzf $1 ;; *.zip) unzip $1 ;; *.Z) uncompress $1 ;; *.7z) 7z x $1 ;; *) echo "don't know how to extract '$1'..." ;; esac else echo "'$1' is not a valid file!" fi }
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alias checkip='dig +short myip.opendns.com @resolver1.opendns.com.' export HISTFILESIZE=20000 export HISTSIZE=10000 shopt -s histappend shopt -s cmdhist HISTCONTROL=ignoredups
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MacOS only command:
alias cleardns='sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder;say DNS clear'