From Bash Reference Manual
: (a colon)
: [arguments]Do nothing beyond expanding arguments and performing redirections. The return status is zero.
I wonder how to use this builtin command?
What is its used for? I am trying to improve my understandings about expansions and redirections, and hope it can be useful.
Does "expanding arguments" mean all kinds of word expansions?
How can I see the result from performing expansions and redirections? : [arguments] doesn't write anything to stdout.
