dotfiles/includes/bash_functions.bash

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# Create a new directory and enter it
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function md() {
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mkdir -p "$@" && cd "$@"
}
# Find shorthand
function f() {
find . -name "$1"
}
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# 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
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}
# 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 ;;
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*.rar) unrar x $1 $2 ;;
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*.gz) gunzip $1 ;;
*.zip) unzip -d$dir_name $1 ;;
*.Z) uncompress $1 ;;
*) echo "'$1' cannot be extracted via extract()" ;;
esac
else
echo "'$1' is not a valid file"
fi
}
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# Print nyan cat
# https://github.com/steckel/Git-Nyan-Graph/blob/master/nyan.sh
# If you want big animated version: `telnet miku.acm.uiuc.edu`
function nyan() {
e='\033'
RESET="$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
}
# Creates an SSH key and uploads it to the given host
# Based on https://gist.github.com/1761938
add-ssh-host() {
username=$1
hostname=$2
identifier=$3
if [[ "$identifier" == "" ]] || [[ "$username" == "" ]] || [[ "$hostname" == "" ]]
then
echo "Usage: configure_ssh_host <username> <hostname> <identifier>"
else
if [ ! -f "$HOME/.ssh/$identifier.id_rsa" ]; then
ssh-keygen -f ~/.ssh/$identifier.id_rsa -C "$USER $(date +'%Y/%m%/%d %H:%M:%S')"
fi
if ! grep -Fxiq "host $identifier" "$HOME/.ssh/config"; then
echo -e "Host $identifier\n\tHostName $hostname\n\tUser $username\n\tIdentityFile ~/.ssh/$identifier.id_rsa" >> ~/.ssh/config
fi
ssh $identifier 'mkdir -p .ssh && cat >> ~/.ssh/authorized_keys' < ~/.ssh/$identifier.id_rsa.pub
tput bold; ssh -o PasswordAuthentication=no $identifier true && { tput setaf 2; echo "SSH key added."; } || { tput setaf 1; echo "Failure"; }; tput sgr0
_ssh_reload_autocomplete
fi
}
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# Upload current directory to special directory on my hosting
function yay() {
server="locum"
dir=`basename "$(pwd)"`
remote="~/projects/yay/$dir"
url="http://yay.sapegin.me/$dir/"
tar cp --exclude '.git' --exclude 'node_modules' . | gzip | ssh $server "mkdir -p "$remote"; gzip -cd | tar x -C "$remote""
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echo "Current directory uploaded to $url."
if command -v pbcopy >/dev/null 2>&1; then
echo -n "$url" | pbcopy
echo "URL copied to clipboard."
fi
}
# Setup syncronization of current Git repo with GitHub repo of the same name
# USAGE: git-github [repo]
function git-github() {
user="sapegin"
repo=${1-`basename "$(pwd)"`}
git remote add origin "git@github.com:$user/$repo.git"
git push -u origin master
}
# Setup syncronization of current Git repo with Bitbucket repo of the same name
# USAGE: git-bitbucket [repo]
function git-bitbucket() {
user="sapegin"
repo=${1-`basename "$(pwd)"`}
git remote add origin "git@bitbucket.org:$user/$repo.git"
git push -u origin master
}
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# Add remote upstream
# USAGE: git-fork <original-author>
function git-fork() {
user=$1
if [[ "$user" == "" ]]
then
echo "Usage: git-fork <original-author>"
else
repo=`basename "$(pwd)"`
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git remote add upstream "git@github.com:$user/$repo.git"
fi
}
# Sync branch with upstream
# USAGE: git-upstream [branch]
function git-upstream() {
branch=${1-master}
git fetch upstream
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git checkout $branch
git merge upstream/$branch
}
# Install/update all NPM tasks used in grunt.js in current folder
function npm-grunt() {
if [ ! -f "grunt.js" ]; then
echo "grunt.js not found."
return
fi
npm update grunt -g
tasks=(`grep -oP "(?<=loadNpmTasks\(['\"])[^'\"]+" grunt.js`)
for task in "${tasks[@]}"
do
npm install $task -g
npm link $task
done
}
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# Find files with Windows line endings (and convert then to Unix in force mode)
# USAGE: crlf [--force]
function crlf() {
[ "$1" == "--force" ] && force=1 || force=0
for file in $(find . -type f -not -path "*/.git/*" -not -path "*/node_modules/*" | xargs file | grep ASCII | cut -d: -f1); do
grep -q $'\x0D' "$file" && echo "$file" && [ $force ] && dos2unix "$file"
done
}