How can I display a list of current environment variables and also recognized regular expressions....
ubuntu at tigershaunt.com
Thu May 1 19:59:36 UTC 2008
John Toliver wrote:
> I'm looking for the equivalent of the "SET" command in windows. also if
> in windows if I typed something like "c:\copy *.* d:\" where can I find
> a list of "*.*" that linux recognizes. I'm trying to get the basics of
> scripting. I'm sorry I don't know any more useful ways of describing
You want cp * /new/destination/
You can use *.*, but that would assume the filenames have a . in them.
Files with no dot (and no 3 letter extension, natually) would not match
*.* But * matches all files *except* hidden files. In Unix, 'hidden'
files are those that start with a . (confused yet?)
So if you want to copy all files in the current directory, including any
that start with a ., try cp . /new/destination/
. on it's own is shell shorthand for current directory.
> Basically if I type cp *.*(what I mean is "all files") source
> would these be considered regular expressions? I'm a little hazy on
Hmm, not really. The shell expands a few special characters, but it's
only a very small subset of regular expressions.
* matches any string of characters of any length, including 0.
For example, if you had 4 files, named file.txt file1.txt file2.txt
gargabe.txt, then file* would match the first 3. If you wanted to make
sure you only grabbed the .txt files, you could use file*.txt
? matches any 1 single character. In the example above, file?.txt would
match file1.txt and file2.txt, but not match file.txt or file11.txt (if
More information about the ubuntu-users