I write scripts to:
- combine a sequence of commands i could type manually, but am too lazy to (example:
proxy-chrome) - turn commands i need frequently but can't remember into ones i can (example:
ex,ssh-forward,ishostup,rmcaps) - do things recursively on a file tree (
rgit,mvnrc,chres) - perform transformation operations on many files that are too complicated for
find(svg2pdf,imgscale) - systematize workflows into a script (
mvn-release) - procrastinate (
gdwc)
The given examples are a subset of all the scripts I have in my doftiles that can be found in thrau/dotfiles.
proxy-chrome() {
port=$(python -c 'import socket; s=socket.socket(); s.bind(("", 0)); print(s.getsockname()[1]); s.close()')
ssh -D ${port} -q -C -N "$@" &
PROXY_PID=$!
chromium-browser \
--proxy-server="socks5://localhost:${port}" \
--host-resolver-rules="MAP * ~NOTFOUND , EXCLUDE localhost"
kill $PROXY_PID
}
# extract any file
ex () {
if [ -f $1 ] ; then
case $1 in
*.tar.bz2) tar xvjf $1 ;;
*.tar.gz) tar xvzf $1 ;;
*.tar.xz) tar xvJf $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 ;;
*.exe) cabextract $1 ;;
*.jar) jar xvf $1 ;;
*.xz) unxz $1 ;;
*) echo "'$1': unrecognized file compression" ;;
esac
else
echo "'$1' is not a valid file"
fi
}
ssh-forward() {
# wrapper around ssh -N
# ssh-forward [email protected] 8080 7700:5000 ...
export host=$1
shift
# export ports="$@"
portargs() {
for port in "$@"; do
if [[ $port =~ ^[0-9]{2,5}$ ]]; then
echo "\-L ${port}\:localhost\:${port}"
elif [[ $port =~ ^[0-9]{2,5}:[0-9]{2,5}$ ]]; then
port_local=$(echo $port | cut -d':' -f 1)
port_remote=$(echo $port | cut -d':' -f 2)
echo "\-L ${port_local}\:localhost\:${port_remote}"
else
echo "Bad forwarding specification '$port'" 1>&2
fi
done
}
ssh -N $(portargs "$@" | xargs) $host
}
# use nmap to check whether a host is up
ishostup() {
nmap -sP --host-timeout=250ms $1 | grep "Host is up" > /dev/null
if [ $? -eq 0 ]; then
echo "yes"
return 0
else
echo "no"
return 1
fi
}
# remap control to caps lock (remove capslock)
rmcaps() {
xmodmap -e 'remove Lock = Caps_Lock'
xmodmap -e 'keysym Caps_Lock = Control_L'
xmodmap -e 'add Control = Control_L'
}
## recursive git
rgit() {
for f in $(find -L -name .git -a -type d | sed "s/^\.\///"); do
d=$(dirname $f)
echo -e "\e[1;34m${d}\e[0m"
(cd $d; git "$@")
echo
done
}
## maven recursive clean (this is so ugly ...)
mvnrc() {
# remove all abandoned bundles first
for target in $(find -type d -name "target"); do
dir=$(dirname $target)
pom=$dir/pom.xml
if [ -f $pom ]; then
echo -n "cleaning $dir ..."
(cd $dir; mvn -fn -B -q clean)
echo " done!"
fi
done
}
# chmod restore
# recursively sets chmod of files to 644 and directories to 755
chres() {
if [ $1 ]; then
folder=$1
else
folder="."
fi
find $folder -type d -exec chmod 755 "{}" \;
find $folder -type f -exec chmod 644 "{}" \;
}
## convert svgs to pdfs
svg2pdf() {
IFS=$'\n'
for f in $*; do
bname=$(basename $f)
name=${bname%.*}
svg=$(dirname $f)/$name.svg
pdf=$(dirname $f)/$name.pdf
if [ $svg -ot $pdf ]; then
echo "skipping $svg"
continue
fi
echo "converting $svg -> $pdf"
inkscape -D -z --file="$svg" --export-pdf="$pdf"
done
}
imgscale() {
factor=$1
shift
for img in "$@"; do
width=$(identify -format "%w" "${img}")
nwdith=$(( $factor * $width ))
nwdith=$(printf "%.0f" "${nwdith}")
ext=${img##*.}
fname=$(basename $img ".$ext")
nfname="${fname}_scaled.${ext}"
convert ${img} -resize ${nwdith} -quality 95 ${nfname}
done
}
mvn-release() {
if [ $1 ]; then
release=$1
else
release="minor"
fi
echo "Determining release version..."
MVN_VERSION=$(mvn -q \
-Dexec.executable="echo" \
-Dexec.args='${project.version}' \
--non-recursive \
org.codehaus.mojo:exec-maven-plugin:1.3.1:exec)
MVN_VERSION="${MVN_VERSION/-SNAPSHOT/}"
echo "... is $MVN_VERSION"
vers=(${MVN_VERSION//\./ })
v_major=${vers[0]}
v_minor=${vers[1]}
v_patch=${vers[2]}
next_major=$(($v_major+1))
next_minor=$(($v_minor+1))
next_path=$(($v_patch+1))
releaseVersion=$MVN_VERSION
tag="v$releaseVersion"
case $release in
"major")
developmentVersion="$next_major.0.0-SNAPSHOT"
;;
"minor")
developmentVersion="$v_major.$next_minor.0-SNAPSHOT"
;;
"patch")
developmentVersion="$v_major.$v_minor.$next_patch-SNAPSHOT"
;;
*)
echo "[ERROR]: unknown release type '$release'"
exit 1
;;
esac
echo "Next development version is $developmentVersion"
cmd="mvn release:prepare -Psonatype-oss-release -DautoVersionSubmodules=true -DreleaseVersion=$releaseVersion -DdevelopmentVersion=$developmentVersion -Dtag=$tag -DpushChanges=false"
echo "$cmd"
echo "Execute this? [y/n]"
read answer
case $answer in
"y") ;;
*)
echo "Okay, bailing"
exit 1
esac
$cmd
}
# "git diff word count" counts the words that were added or removed in a diff
# useful for checking how much thesis writing you got done
gdwc() {
a=$(git diff "$@" | grep "^+" | wc -w)
d=$(git diff "$@" | grep "^-" | wc -w)
echo $(($a - $d))
}