#48 md5sum failed on Mac OS X Lion / Snow Leopard

[Philipp]

If you execute install.sh on a Lion or Snow Leopard you get an md5sum failed:

###

### Checking archive files for existence, readability and integrity.

automysqlbackup ... exists and is readable ... md5sum failed :(

###

I copied also from a Linux server over scp to my macs and I had always md5sum faild.

[Philipp]

System Version: Mac OS X 10.6.8 (10K549)
Kernel Version: Darwin 10.8.0

[PittaGurneyi]

Hi, I need more information.
Please add the output of:
grep 'precheck_files=( automysqlbackup' install.sh
md5sum automysqlbackup

Please also test the latter on the Linux server, if possible. There isn't much room for possible errors here, since I just checked the files in our archive - they are just fine.

Perhaps you can modify one line of install.sh

if echo "${precheck_files[$((2*$i+1))]} ${precheck_files[$((2*$i))]}" | md5sum --check >/dev/null 2>&1; then

into

if echo "${precheck_files[$((2*$i+1))]} ${precheck_files[$((2*$i))]}" | md5sum --check; then

then run it again and see if you get an error from md5sum.
Also an md5sum --help output would be good to see, if the --check routine doesn't exist on your system.

[Philipp]

I search a litte bit and found out that Mac OS X didn’t have the md5sum installed by default. Only md5 is installed where you can create an md5 hash and md5 hash noch --check routine.

[PittaGurneyi]

Well I'll just add a check in the install.sh to see if md5sum is there or not. Could you just clarify: Is md5sum --check available?

[PittaGurneyi]

Okay, I'm going to close this but leave it open for comment posting. Please be so kind and answer my last question.

[Philipp]

md5sum --check
-bash: md5sum: command not found

[skiles]

Interesting post that may help here: http://raamdev.com/2008/howto-install-md5sum-sha1sum-on-mac-os-x/ It's a kludge, however, it gives some direction. There is no equivalent for the "md5sum --check" or is there?

[PittaGurneyi]

I just took another look at this and there seems to be "openssl md5 file_name" available on osx. If one would replace

if echo "${precheck_files[$((2*$i+1))]} ${precheck_files[$((2*$i))]}" | md5sum --check >/dev/null 2>&1; then
printf "md5sum okay :)\n"
else
printf "md5sum failed :(\n"
exit 1
fi

with

md5_sum=$(openssl md5 "${precheck_files[$((2*$i))]}")
md5_sum=${md5_sum##*= }
if [[ "${precheck_files[$((2*$i+1))]}" = "${md5_sum}" ]]; then
printf "md5sum okay :)\n"
else
printf "md5sum failed :(\n"
exit 1
fi

in the install.sh script, this should work.

However this relies on the fact, that the output openssl produces is of the form

MD5(path/to/file)= 234890234890
where there is a = followed by a single space before the actual md5 sum.

If people using osx would test this and come back to me with the result, i could make changes for the next version.

[Anonymous]

It seems you just need to replace

md5sum --check

with

md5 -r

For when running under MacOSX.

Cheers,

Brooke

[John Robertson]

I had the same problem on pair.com running install.sh under ssh (under Linux @ pair). So I tried your mod:

md5_sum=$(openssl md5 "${precheck_files[$((2*$i))]}")
md5_sum=${md5_sum##*= }
if [[ "${precheck_files[$((2*$i+1))]}" = "${md5_sum}" ]]; then
printf "md5sum okay :)\n"
else
printf "md5sum failed :(\n"
exit 1
fi

And that worked just fine. I did find this Apache note about md5 issues that you may not be aware of:

http://ant.apache.org/manual/Tasks/checksum.html

[John Robertson]

I had the same problem on pair.com running install.sh under ssh (under Linux @ pair). So I tried your mod:
md5_sum=$(openssl md5 "${precheck_files[$((2*$i))]}")
md5_sum=${md5_sum##*= }
if [[ "${precheck_files[$((2*$i+1))]}" = "${md5_sum}" ]]; then
printf "md5sum okay :)\n"
else
printf "md5sum failed :(\n"
exit 1
fi

And that worked just fine. I did find a reference to Apache comments on problems with md5 here:

http://ant.apache.org/manual/Tasks/checksum.html