Conditions

General

• A shell script can test the exit code of any command that can be invoked from the cli
  • That's why you should include an exit command at the end of any scripts you write
• test and [ ] are synonymous
  • don't name programs test or it will get jacked up
• Here is the first line of an if statement written each way
  • if test -f blah.py
  • if [ -f blah.py ]
    • The spaces after the first brace and before the second one are required
    • Mnemonic: [ ] means test, and you wouldn't do test-f