I have multiple files which all have a similar naming pattern like: {filename}.jpeg{random number} I want to rename these files so that their extension is just .jpeg. How can I do this?

I have a list of directories that I want to archive. But sometimes they do not all exist. I want to be able to create an archive by providing a list of directories, and it will only archive the existing ones, and ignore missing ones. (but should still fail if no directories exist) This is usef...

I've used the mkfifo <file> command to create named FIFOs, where one process writes to the file, and another process reads from the file. Now, I know the mknod command is also able to create named pipes. Are these named pipes equivalent to the FIFOs created by mkfifo, or do they have additional...