how to do checksum on a folder in Solaris

Question

On my Solaris machine, I sometimes use the sum command to verify that a file has not changed. I now want to check whether a directory's contents have changed but sum only runs on files.

Is there a way to run sum or a similar command on an entire directory?

Example sum on a file:

$ sum  file.xml
27247 11 file.xml

Try `tar c dir | md5sum` – Milind Dumbare Mar 18 '15 at 12:13 — Milind Dumbare, Mar 18 '15 at 12:13

score 6 · Answer 1 · answered Mar 18 '15 at 12:16

6

1) do a reference:

find . -type f -exec sum {} \; | sort -k3 > /my/reference.txt

2) do a run time check

find . -type f -exec sum {} \; | sort -k3 | diff /my/reference.txt -

where

sort -k3 do a sorting on file name
diff part will show file changed, added or deleted.

answered Mar 18 '15 at 12:16

Archemar

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I very much prefer this solution of the other answers as it might not always be feasible to create a tarball of the directory/directories in questions, e.g. when disk space is a limiting factor. Although the `diff` gives you richer information of the changes, if you want to have a single sum as a result/reference, you can obviously pipe on the results of the sort commands to `sum` instead of saving them to a file. – inVader Mar 18 '15 at 13:36
This is better if you only care about the contents of the files. – l0b0 Mar 18 '15 at 13:50

Milind Dumbare · Accepted Answer · 2015-03-18T13:21:25.427

3

Use tar to create tarball of directory and run sum on it then.

tar cf - <directory name> | sum -

edited Mar 18 '15 at 13:21

answered Mar 18 '15 at 12:14

Milind Dumbare

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md5sum not relevant in solaris - tar c folder | md5sum md5sum: Command not found. – maihabunash Mar 18 '15 at 12:18
Does using `sum` instead of `md5sum` help? – Milind Dumbare Mar 18 '15 at 12:20
Strange! Can you check `sum file.xml` once again – Milind Dumbare Mar 18 '15 at 12:28
tar c folder | sum 0 0 , I can do it only on folder not on file – maihabunash Mar 18 '15 at 12:38
`sum file.xml` ? – Milind Dumbare Mar 18 '15 at 12:39
sum file.xml 23345 11 file ( file in folder ) – maihabunash Mar 18 '15 at 12:57
Find a way to create a tarball (compress) of the file /directory on solaris and run sum on it then. – Milind Dumbare Mar 18 '15 at 12:58
@maihabunash does `tar c directory | sum -` work? – terdon Mar 18 '15 at 13:02
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no , what its work is that --> tar cf - | sum – maihabunash Mar 18 '15 at 13:20
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`tar` will also include [ownership, permissions and timestamps](https://unix.stackexchange.com/a/43606/3645), so unless you care about those (normally you wouldn't) this is a bad idea. – l0b0 Mar 18 '15 at 13:50
Alternately use "digest -a md5" rather than sum. Digest supports alternate hash mechanisms which may be useful to you. – Ric F Mar 24 '15 at 02:30

score 2 · Answer 3 · edited Jun 16 '16 at 06:43

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On Solaris tar works differently. So either use gtar from GNU or use tar cf - and then the solution from Miline:

tar cf - folder | sum

edited Jun 16 '16 at 06:43

Pierre.Vriens

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answered Mar 18 '15 at 13:06

Ondrej

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how to do checksum on a folder in Solaris

3 Answers3