Posts Tagged “command line”

Ever attempt to delete the Trash on OSX and run into an error that says you can’t complete the operation because you don’t have permissions to access some of the items? I am not sure how often this will happen to the average user that wouldn’t already know how to resolve the problem since the chances are high that the file or files created with different permissions required you to change to the root user in the first place. Anyhow below is a better description of the issue along with a screenshot followed by how to resolve the problem emptying your Trash on your Mac.

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Locating the Ubuntu version is easy regardless of if you need to locate the Ubuntu Linux version from the CLI or via the Ubuntu GUI. I always forget what the CLI command is so this is as much reference for myself as it is sharing with others. Below I describe how to determine Ubuntu version from the Ubuntu Linux CLI and the Ubuntu Linux GUI.

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OK this article is sort of silly and will be fairly short and to the point but earlier I was trying to find the process name of the OSX Lion firewall. During the process of looking for the OSX Lion firewall process name I learned a bunch of little firewall tidbits such as there are a ton of settings you can set from the command line, there are third party OSX Lion Firewall GUI configuration tools, and there are complete third party firewalls available for install on OSX Lion.

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The other day while configuring a Asus RT-N16 wireless router we had installed DD-WRT software on I decided to turn off HTTP access to the web admin interface. After making this change I got pulled away to test something else and never tested it so I was surprised when I attempted to login today and I was unable to login to the DD-WRT web interface using HTTP or HTTPS. Turns out something was not allowing HTTPS to start and since I had disabled HTTP the wireless router was no longer listening on port 80 or port 443. Below is information on how to start Apache after logging into a wireless router running DD-WRT either via SSH or via telnet.

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When attempting to remove a user role from PostgreSQL it is possible to get an error. This error will be received if the role attempting to be removed still has access privileges for instance SELECT privileges on specific tables. Below I describe the error as well as how to remove access privileges for each table as well as a link to a previous article we wrote that will loop through every table within a specified database and revoke privileges.

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