[Crontab - Snippets] Gists, Snippets and Workflows #cli

README.md

Collected Cron Tabs

Sources

• 15 Practical Crontab Examples
• 20 Examples of Crontab
• StackOverflow - Cron
• StackOverflow - Crontab

Tools

• Crontab Guru - Shows settings for custom times

clean-homebrew-weekly.md

Run cleanup operation for homebrew every Monday at 8:00 am

0 8 * * 1 /usr/local/bin/brew cleanup 

copy-dev-dir.md

Copy directory listing of dev folder to dropbox, every 30 minutes

0,30 * * * * /usr/local/bin/tree -d -L 1 dev > ~/Dropbox/config/trip/dev-directory.txt

monitor-website.sh

#! /bin/sh
# A script to monitor uptime of websites,
# and notify by email if a website is down.

SITES="ADD COMMA-SEPARATED WEBSITES HERE"
EMAILS="ADD COMMA-SEPARATED EMAILS HERE"
  for SITE in $(echo $SITES | tr "," " "); do
  if [ ! -z "${SITE}" ]; then
    RESPONSE=$(curl -s --head $SITE)
    if echo $RESPONSE | grep "200 OK" > /dev/null
    then
      echo "The HTTP Server on ${SITE} is up!"
    else
      MESSAGE="The HTTP server at ${SITE} has failed to respond."
      for EMAIL in $(echo $EMAILS | tr "," " "); do
        SUBJECT="${SITE} (http) Failed"
        echo $MESSAGE | mail -s "$SUBJECT" $EMAIL
        echo $SUBJECT
        echo "Alert sent to $EMAIL"
      done
    fi
  fi
done

update-homebrew-daily.md

Will update homebrew at midnight and noon each day.

0 12 * * * /usr/local/bin/brew update

vscode-projects-to-dropbox.md

Will copy VSCode Projects json file to Dropbox every 30 minutes

0,30 * * * *  /bin/cp -a ~/Library/Application\ Support/Code/User/projects.json ~/Dropbox/config/vscode-iridium/projects.json