Remove contents of directory, but not directory


 
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# 1  
Old 12-03-2005
Remove contents of directory, but not directory

What's the best way to delete everything in a directory, but not the directory itself, without using shell wildcards?
# 2  
Old 12-03-2005
Quote:
Originally Posted by pdc
What's the best way to delete everything in a directory, but not the directory itself, without using shell wildcards?
Why can't you use shell wildcards?

Carl
# 3  
Old 12-03-2005
Looks like homework to me, but here's a thought: why dont you look up the man pages of ls and for loop in sh/ksh.
# 4  
Old 12-03-2005
It's not homework. I'm looking to know mostly out of curiosity, but you could argue that using wildcards is bad anyway. If there's a million files in the directory, that's a million rm processes (obviously not all simultaneous, but still). It's not bullet-proof:

mercury-2:~:0 mkdir foo
mercury-2:~:0 touch foo/.bar
mercury-2:~:0 rm -rf /foo/*
zsh: sure you want to delete all the files in /foo [yn]? y
zsh: no matches found: /foo/*
mercury-2:~:1


On top of that, it's not easy to use from, say, an exec() call. You need the infrastructure of a shell.

So my question stands.
# 5  
Old 12-03-2005
find . -type f -exec rm {} \; -print
# 6  
Old 12-03-2005
Except that won't remove any subdirectories. Removing the "-type f" and specifying "rm -r" fixes this issue... but you'll still hit an error when find attempts to remove the "." directory. Incidentally, "find . -delete" is probably a nicer way of coding this.

Anyone else got suggestions? It seems like the kind of thing their should be a command, or flag to rm, for: a simple way to empty a directory.

Last edited by pdc; 12-03-2005 at 11:08 PM..
# 7  
Old 12-04-2005
Quote:
Originally Posted by pdc
It's not homework. I'm looking to know mostly out of curiosity, but you could argue that using wildcards is bad anyway. If there's a million files in the directory, that's a million rm processes (obviously not all simultaneous, but still). It's not bullet-proof:

/*skipped the code*./

On top of that, it's not easy to use from, say, an exec() call. You need the infrastructure of a shell.

So my question stands.
I dont think you have that right.. a million processes is not a million rm processes. Its all those million files as arguments to one rm process. Now that might fail due to too many arguments (any command can handle only a finite number).
I will give you your second argument about not being easy to use from an exec() call.

Why don't you use a slightly modified form of the find command that ppierald gave:
Code:
find . -exec rm -rf {} \;

That, by the way, would be a million rm processes (one for each file/directory that the find command would output).
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