Handy useful shell scripts

useful-script.sh

# setup NPM behinds a HTTP proxy
npm config set proxy http://127.0.0.1:1098
npm config set https-proxy http://127.0.0.1:1098

# unset NPM proxy
npm config rm proxy
npm config rm https-proxy

# set NPM to mirror registry
npm config set registry https://registry.npm.taobao.org

# set electron-packager mirror
export ELECTRON_MIRROR=https://npm.taobao.org/mirrors/electron/
export ELECTRON_CUSTOM_DIR=9.0.2 # replace to your electron version

# delete all files with extension `.jpg` under fold A
# https://ss64.com/bash/find.html
find ./A -type f -name '*.jpg' -delete
find ./A -type f -name '*.jpg' -delete # ignore case
find ./A -type f -name "*.jpg" -size -160k -delete # less than 160k
find ./A -type f -name "*.jpg" -size 160M -delete # exactly 160MB
find ./A -type f -name "*.jpg" -size +160c -delete # greater than 160 bytes