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bchase/usr-bin-example

Created June 22, 2017 20:28
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usr-bin-example
$ echo '#!/usr/bin/env ruby\n\nputs "hello, /usr/bin"'> foo
$ chmod +x foo
$ ./foo
hello, /usr/bin
$ foo
zsh: command not found: foo
$ cp foo /usr/bin
cp: cannot create regular file ‘/usr/bin/foo’: Permission denied
$ sudo cp foo /usr/bin
$ foo
hello, /usr/bin
$ sudo rm /usr/bin/foo
$ foo
zsh: command not found: foo
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bchase commented Jun 22, 2017 

$ echo $PATH | grep "/usr/bin"

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