Just some random notes from a project.
Windows Command Line Stuff
Command prompt - not PowerShell to see a list of Environment Variables: type set. Only works in the command prompt window, not PS.
Powershell: set an environment variable: $env:API_URL = "http://localhost:3100/api"
To read it back: echo $env:API_URL
Ubuntu Command Line Stuff
Updates available - install them: sudo apt-get update && sudo apt-get upgrade
the upgrade note called a message of the day, may not go away until the next day or reboot.
Check disk information - to see free space etc: df -h
human readable ls with last modified date: ls -halt
show current date and time: date “+%H:%M:%S %d/%m/%y”
top - shows list of processes shift + m sort top by mem usage
show list of all processes sorted by RSS memory usage:
ps aux –sort -rss
kill process id and hopefully restart it:
sudo kill -HUP
Ubuntu and Vi
Save and quit - :wq - make sure insert is off - press escape
Just quit - :q
paste - right click
To remove a block of text:
- Put your cursor on the top line of the block of text/code to remove.
- Press V (That’s capital “V” : Shift + v )
- Move your cursor down to the bottom of the block of text/code to remove.
- Press d.
PM2
logs are in home/.pm2
Javascript Debugging
window.alert((JSON.stringify(fileNames)) + ',' + dupeCheck + ',' + i);