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I am trying to determine which files will be touched based on their modified date. My directory is a top a list of perhaps several levels of subdirectories.

From a terminal window I run this command:

find Program.8.koeb/ -mtime -10

Which correctly produces a list of files modified within the past 10 days. However if I want to query this list to make sure that the files I want to touch using the find command, I would run this command:

find Program.8.koebe/ -mtime -10 -exec ls -gotrhR {} \;

Which produces a long list of all the files within directories of my current working directory, including subdirectories, along with the named directory find is assigned to look. So, -exec ls -gotrhR {} \; seems to be producing the same output as:

find . -mtime -10 -exec ls -gotrhR {} \;

Which is not my intention.

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    Why would you run ls -R, when find is already recursive? Why would you run ls manually at all, when find has an -ls command? – muru Feb 25 '16 at 17:09
  • As far as I know, the -ls in find does not take switch arguments, thus the output is rather cluttered with unreadable file size numbers - there is also no total size values given for each listed directory. I use the -go switch in ls to remove my user name from all the listed files owner and groups, since this is of no use to someone who will read a print out of the results. – Gustav Feb 26 '16 at 13:19
  • the size reported by ls is useless as a size of the directory and its contents. Are you looking for du? – muru Feb 26 '16 at 13:23
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When you pass a directory to ls, it lists the files in that directory, not the directory itself. With the -R flag, ls lists files in subdirectories recursively. To make ls list directories rather than their contents, pass the -d option.

The -t and -r flag are useless since they only affect sorting and you're listing one file at a time.

find Program.8.koebe/ -mtime -10 -exec ls -gohd {} \;

With GNU find, you can use -printf instead of invoking an external command. The output format will be similar but not exactly identical.

find Program.8.koebe/ -mtime -10 -printf '%M %n %s %M %c %p\n'
  • thanks for the answers Gilles - the -t and the -r are actually quite helpful for me in the reports that I create, though. I knew of the -printf switch but never used it so much. I haven't tried to tweak the -printf parameters to produce a clean read out yet. – Gustav Feb 26 '16 at 13:52
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    @Gustav ls -rt doesn't do anything when you pass one file at a time. find … -exec ls -trd {} + would call ls in batches, so it will sort, but only per batch: if there are too many files, ls will be called multiple times and so the output won't be sorted. To get sorted output, your best bet is to use a parseable date format (ideally YYYY-MM-DD HH:MM:SS) and pipe through sort. Or use zsh globbing flags (which requires installing the zsh package). – Gilles Feb 26 '16 at 14:03
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Just add '-type f' cause -exec ls -l {} will include those are directories and list them, too.

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