Tips for command

• git related
  • git push

    git push origin YOUR_BRANCH # normal push commits
    git push origin YOUR_BRANCH --force # force option will rewrite commit history                                      
    

  • git merge-base

    fork_point=$(git merge-base --fork-point origin/master YOUR_BRANCH)
    git rebase --onto origin/master $fork_point YOUR_BRANCH
    

  • git rebase

    git rebase -i head~n # rebase form number n commits before head
    git rebase -i --root # rebase from the root of BRANCH
    

  • git reset

     git reset --hard HEAD~1 # rollback to the last commit and discard any changes
    

  • git config

    git config --global alias.cb "branch --show-current" # set alias
    git config --global --unset alias.cb  # unset alias
    

• bash related
  • find

    find . -maxdepth 5 -mindepth 2 -type f -name "*.csv" | xargs -n1 dirname | sort -u
    find . -maxdepth 2 -type f -name "*.dat" -exec chmod 644 {} \;
    

  • bash

    bash -c "java -version"
    

  • lsof

    # 查看TCP连接
    lsof -p PID -nP | grep TCP
    

  • netstat

    # 查看80端口连接
    netstat -nat |grep -i "80"
    

• npm related
  • install

    npm install
    

• s3 related
  • list objects

    aws s3api --endpoint {ENDPOINT} list-objects --bucket {BUCKET_NAME}
    

  • get object

    aws s3api --endpoint {ENDPOINT} get-object --bucket {BUCKET_NAME} --key {KEY_NAME} {TARGET_FILE}
    

  • put object

    aws s3api --endpoint {ENDPOINT} put-object --bucket {BUCKET_NAME} --key {KEY_NAME} --body {TO_BE_UPLOADED_SOURCE}
    

  • delete object

    aws s3api --endpoint {ENDPOINT} delete-object --bucket {BUCKET_NAME} --key {TO_BE_DELETED_KEY}
    

• redis related
  • del keys by batch

    redis-cli --scan --pattern "key-prefix-*" | xargs -L 2000 redis-cli del
    

• curl related
  • query public IP address

    curl ip.sb
    

  • no-check-certificate

    curl 'https://www.google.com' -k
    

• dd related
  • random token

    dd if=/dev/urandom bs=128 count=1 2>/dev/null |base64 |tr -d "=+/" |dd bs=32 count=1 2>/dev/null