$PATH

A lightning talk breaking down the $PATH variable.

Transcript

1. ⚡
   $PATH
   kimschles 1
   

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2. !
   echo $PATH
   kimschles 2
   

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3. /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
   • Environment Variable
   • 1 long string
   • Colon-separated
   • Is a path to executable code invoked through text commands
   kimschles 3
   

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4. /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
   /usr/local/bin
   /usr/bin
   /bin
   /usr/sbin
   /sbin
   kimschles 4
   

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5. Editing $PATH
   kimschles 5
   

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6. Permanent Change
   Add to .bashrc or right from the command line.
   export PATH=$PATH:/Library/Frameworks/Python.framework/
   Versions/3.5/bin
   kimschles 6
   

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7. Temporary Change
   From the command line. Only lasts in current shell (no export)
   PATH=$PATH:/Library/Frameworks/Python.framework/Versions/
   3.5/bin
   kimschles 7
   

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8. Recapitulation
   • Environment Variable
   • 1 long string
   • Colon-separated
   • Is a path to executable code invoked through text commands
   kimschles 8
   

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9. Recapitulation
   • See it with
   echo $PATH
   • Change it with export:
   export PATH=$PATH:/Library/Frameworks/new/thing
   • Try out a new path by taking out export:
   PATH=$PATH:/Library/Frameworks/new/thing
   kimschles 9
   

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10. Resources
    • How to Access and Edit Path
    • The /bin Directory
    kimschles 10
    

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11. kimschlesinger.com
    hirediversity.us
    kimschles 11
    

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