Re: Regular expressions help request: source file of disk image volume
Re: Regular expressions help request: source file of disk image volume
- Subject: Re: Regular expressions help request: source file of disk image volume
- From: Ian Ward Comfort <email@hidden>
- Date: Mon, 14 Aug 2006 15:10:59 -0700
On Aug 14, 2006, at 2:46 PM, Laine Lee wrote:
Anyway, my solution is to use a shell script that gets a list of
all disk image volume paths, then gets a list of disk image files
whose volumes are mounted. Both of the lists are generated through
"hdiutil info" shell script commands. The I just use a hash table
to pair up the results and find the item I want. Included are the
broken regular expressions used for the shell script followed by
some that seem to be working now. What I'm hoping to get help with
is a better regular expression string - one that isn't likely to
break again. Thanks.
-- Broken list disk image volumes:
paragraphs of (do shell script "hdiutil info" & space & "|grep ^/
dev/disk |grep -o /Volumes/.*' '*")
I'm not sure how you settled on the *' '* pattern here, but I'd use
something like
hdiutil info | grep ^/dev/disk | grep -o '/Volumes/.*'
Note that the single quotes are necessary to prevent the shell from
expanding /Volumes/.* as a glob. Also note that this will miss any
disk images mounted outside of /Volumes (e.g. those attached with -
mountroot or -mountpoint). To get those I might use something like
hdiutil info | sed -ne 's/.*Apple_HFS[[:space:]]*//p'
which should catch all HFS partitions mounted from disk images.
—IWC
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