dotfiles/includes/bash_functions.bash
2012-10-31 16:38:56 +04:00

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# Create a new directory and enter it
function mkd() {
mkdir -p "$@" && cd "$@"
}
# Get gzipped file size
function gz() {
echo "Original size (bytes): "
cat "$1" | wc -c
echo "Gzipped size (bytes): "
gzip -c "$1" | wc -c
}
# Test if HTTP compression (RFC 2616 + SDCH) is enabled for a given URL.
# Send a fake UA string for sites that sniff it instead of using the Accept-Encoding header. (Looking at you, ajax.googleapis.com!)
function httpcompression() {
encoding="$(curl -LIs -H 'User-Agent: Mozilla/5 Gecko' -H 'Accept-Encoding: gzip,deflate,compress,sdch' "$1" | grep '^Content-Encoding:')" && echo "$1 is encoded using ${encoding#* }" || echo "$1 is not using any encoding"
}
# Escape UTF-8 characters into their 3-byte format
function escape() {
printf "\\\x%s" $(printf "$@" | xxd -p -c1 -u)
echo # newline
}
# Decode \x{ABCD}-style Unicode escape sequences
function unidecode() {
perl -e "binmode(STDOUT, ':utf8'); print \"$@\""
echo # newline
}
# Get a characters Unicode code point
function codepoint() {
perl -e "use utf8; print sprintf('U+%04X', ord(\"$@\"))"
echo # newline
}
# Extract archives of various types
function extract() {
if [ -f $1 ] ; then
local dir_name=${1%.*} # Filename without extension
case $1 in
*.tar.bz2) tar xjf $1 ;;
*.tar.gz) tar xzf $1 ;;
*.tar.xz) tar Jxvf $1 ;;
*.tar) tar xf $1 ;;
*.tbz2) tar xjf $1 ;;
*.tgz) tar xzf $1 ;;
*.bz2) bunzip2 $1 ;;
*.rar) unrar x $1 ;;
*.gz) gunzip $1 ;;
*.zip) unzip -d$dir_name $1 ;;
*.Z) uncompress $1 ;;
*) echo "'$1' cannot be extracted via extract()" ;;
esac
else
echo "'$1' is not a valid file"
fi
}
# Print nyan cat
# https://github.com/steckel/Git-Nyan-Graph/blob/master/nyan.sh
# If you want big animated version: `telnet miku.acm.uiuc.edu`
function nyan() {
e='\033'
RESET="$e[0m"
BOLD="$e[1m"
CYAN="$e[0;96m"
RED="$e[0;91m"
YELLOW="$e[0;93m"
GREEN="$e[0;92m"
echo
echo -en $RED'-_-_-_-_-_-_-_'
echo -e $RESET$BOLD',------,'$RESET
echo -en $YELLOW'_-_-_-_-_-_-_-'
echo -e $RESET$BOLD'| /\_/\\'$RESET
echo -en $GREEN'-_-_-_-_-_-_-'
echo -e $RESET$BOLD'~|__( ^ .^)'$RESET
echo -en $CYAN'-_-_-_-_-_-_-'
echo -e $RESET$BOLD'"" ""'$RESET
echo
}