Commands by jun3337 (1)

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Figure out what shell you're running

restart apache only if config works
making lots of configurations to apache and restarting the server only to find it broken just plain sucks.

list current processes writing to hard drive

Alert on Mac when server is up
When run on a mac, this command will bring up a dialog box in the Terminal when server HOSTNAME first responds to a ping.

Recursive Search and Replace
Finds the string in every file in an entire directory and all its subdirectories and replaces it with a new string. Especially useful when changing a machine's IP address or hostname - run it on /etc.

set your screensaver as your desktop background MAC OSX

Count number of hits per IP address in last 2000 lines of apache logs and print the IP and hits if hits > 20

Retrieve "last modified" timestamp of web resource in UTC seconds
This command line assumes that "${url}" is the URL of the web resource. It can be useful to check the "freshness" of a download URL before a GET request.

Show Directories in the PATH Which does NOT Exist
I often need to know of my directory in the PATH, which one DOES NOT exist. This command answers that question * This command uses only bash's built-in commands * The parentheses spawn a new sub shell to prevent the modification of the IFS (input field separator) variable in the current shell

Check syntax of remote ruby file


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