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Explaining Console Vocab: Argument, Nested, Recursive, and Flag
Jim never explained the vocab/concepts of an argument in the console, what a nested directory is, what recursive means, and what flag is. Can someone fill me in on these concepts? Thanks!
Angelica Hart Lindh19,463 Points
With regards to your question about the vocabulary for the command line the following may help:
An argument is the information provided to a program when it is started and can have many of these. In the following example, 'rm' is the program and 'file.txt' is the argument
$ rm file.txt
Directory / Nested Directory
A directory is a file or folder cataloging system that references other files and folders. In the example below '~/Documents' is a directory (folder), and then the 'myFolder' directory is within 'Documents' and therefore nested
This is a term that means to perform the operation of a program on each of the arguments passed to it. For example below we want to copy all of the files within the '~/Documents/' directory and move them to the '~/myNewFolder/' directory. To do this on the files nested within 'Documents' we need to perform the
cp program on each of the files to do this we pass the ' -r ' flag.
~/Documents File1.txt File2.txt File3.txt $ cp -r ~/Documents ~/myNewFolder
With regard to the command line a flag represents a boolean value. By including the flag you are setting the boolean value to true so the program. In the ^^above^^ example the ' -r ' is the flag that sets the 'recursion' of the program to true.
Hope that helps,