BASH md5sum compare

[pendal]

I would like to compare two md5sum outputs to see if the files match.

in my script I have

ORG_FILE="/path/to/org/file.zip"
NEW_FILE="path/to/new/file.zip"

MD5_ORIG=$(md5sum -b "$ORG_FILE")
MD5_NEW=$(md5sum -b "$NEW_FILE")

this gives me lines like
MD5_ORIG='dd3e19b2d1ec5f9b459238842ef560c7 */path/to/org/file.zip'
MD5_NEW='dd3e19b2d1ec5f9b459238842ef560c7 */path/to/new/file.zip'

How do I get just the MD5 hash and not the */.... stuff so I can compare them.

i tried

JUST_HASH=${$MD5_ORIG:0:32}

but All I get is

dir_mon_notify.sh: line 79: ${$MD5_ORIG:0:32}: bad substitution


Thanks for any help.

C

[Irithori]

This might do

diff <(md5sum /path/to/org/file.zip| awk '{print $1}') <(md5sum path/to/new/file.zip | awk '{print $1}')

Note:
If either old or new file stays static, you only need to compute the md5sum once and save it into a file.
md5sum can then use that file to compare against a new run.