.dotfiles/zsh/scripts

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#--------------------------------
# filename: /zsh/scripts
#--------------------------------
# Search for string in all files in pwd
function f() {
grep -rnw ./ -e "$1"
}
# mkdir and cd
function mkcd() {
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mkdir -p "$@" && cd "$_" || exit;
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}
# "Fake" sha256sum
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if [[ ! -x $(which sha256sum) ]]; then
function sha256sum() {
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shasum -a256 "$1"
}
fi
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# Tar.gz with GZIP or PIGZ
function targz() {
if [ -z "$1" ]; then
echo "usage: targz filename.tar.gz directory"
return
fi
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if [[ ! -x $(which pigz) ]]; then
tar -czf "$1" "$2"
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echo "gzip"
else
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tar -c "$2" | pigz > "$1"
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echo "pigz"
fi
}
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# Export manpage as PDF
function manp() {
man -t $1 | pstopdf -o $TMPDIR/$1.pdf && open $TMPDIR/$1.pdf && sleep 1 && rm $TMPDIR/$1.pdf
}
# Send pushover notification (if set)
if [[ -z "$pushover_token" ]]; then
function pushover() {
curl -s \
--form-string "token=$pushover_token" \
--form-string "user=$pushover_user" \
--form-string "title=$HOST" \
--form-string "message=$1" \
https://api.pushover.net/1/messages.json
}
fi
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# png to jpeg 95
function png2jpeg() {
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findpath=$1
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: "${findpath:="."}"
find "$findpath" -name '*.png' | while read -r f ; do
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dir=$(dirname "$f");
file=$(basename "$f");
name="${file%.*}";
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magick "$f" pnm:- | cjpeg -progressive -optimize -quality 95 > "$dir/$name.jpg" </dev/null
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rm -f "$f";
done
}
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function jpeg1024() {
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magick "$1" -resize '1024x1024\>' -background black -flatten TGA:- | cjpeg -targo -optimize -progressive -quality 90 -outfile "$1".jpg
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}
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# Make PDFs look like scanned
# src: https://gist.github.com/andyrbell/25c8632e15d17c83a54602f6acde2724?permalink_comment_id=3295405#gistcomment-3295405
function pdf-like-scanned () {
OUT=$(basename "$1" .pdf)
convert -density 150 "$1" -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" \
-attenuate 0.4 +noise Multiplicative -attenuate 0.03 +noise Multiplicative -sharpen 0x1.0 \
-colorspace Gray "$OUT"_scanned.pdf
}
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# Extract files
# src: https://github.com/mawalu/dotfiles/blob/master/zsh/.zsh/functions.zsh#L21
function extract () {
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if [ -f "$1" ] ; then
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case $1 in
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*.tar.bz2) tar xjf "$1" ;;
*.tar.gz) tar xzf "$1" ;;
*.bz2) bunzip2 "$1" ;;
*.rar) unrar x "$1" ;;
*.gz) gunzip "$1" ;;
*.tar) tar xf "$1" ;;
*.tbz2) tar xjf "$1" ;;
*.tbz) tar xjf "$1" ;;
*.tgz) tar xzf "$1" ;;
*.zip) unzip "$1" ;;
*.Z) uncompress "$1" ;;
*.7z) 7z x "$1" ;;
*) echo "'$1' cannot be extracted via extract()" ;;
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esac
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else
echo "'$1' is not a valid file"
fi
}
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# Download provided url to $HOME/Downloads
function dl() {
if [ -z "$1" ]; then
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echo "usage: dl url --- downloads to $HOME/Downloads"
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return
fi
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if [[ -x $(which aria2c) ]]; then
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aria2c --dir="$HOME/Downloads" --continue=true --max-connection-per-server=4 "$1"
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else
(cd "$HOME/Downloads" && curl -O "$1")
fi
}
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# Monitor IP/Host and report with Pushover
pnotify-online() {
local ip_address="$1"
echo "Monitoring $ip_address …"
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while true; do
if ping -c 1 -W 1 "$ip_address" >/dev/null; then
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echo -e "\07*Ding*"
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echo "$1 is online now."
pushover "$1 is online now."
break
fi
done
}
pnotify-offline() {
local ip_address="$1"
echo "Monitoring $ip_address …"
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while true; do
if ! ping -c 1 -W 1 "$ip_address" >/dev/null; then
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echo -e "\07*Ding*"
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echo "$1 is offline now."
pushover "$1 is offline now."
break
fi
done
}