Start Windows PowerShell with the "Run as Administrator" option. Only members of the Administrators group on the computer can change the execution policy. Enable running unsigned scripts by entering:

The MSDN/Technet URL now redirects to a page saying "The Windows PowerShell 1.0 Owner’s Manual has been retired. For the most up-to-date Windows PowerShell content, go to Using Windows …

What does $# mean in shell? I have code such as if [ $# -eq 0 ] then I want to understand what $# means, but Google search is very bad for searching these kinds of things.

How do I call an external command within Python as if I had typed it in a shell or command prompt?

The shell is the program which actually processes commands and returns output. Most shells also manage foreground and background processes, command history and command line editing.

… or an introductory guide to robust filename handling and other string passing in shell scripts. I wrote a shell script which works well most of the time. But it chokes on some inputs (e.g. on som...

You should remember that shell scripting is less of a language and more of a collection of commands. Instinctively you think that this "language" requires you to follow an if with a [ or a [[.

If I wanted to use zsh, for instance, rather than bash, where would I make this change for the current user?

How do I copy a folder from remote to local host using scp? I use ssh to log in to my server. Then, I would like to copy the remote folder foo to local /home/user/Desktop. How do I achieve this?

A shell assignment is a single word, with no space after the equal sign. So what you wrote assigns an empty value to thefile; furthermore, since the assignment is grouped with a command, it makes …