Help with Shell script

I have the following shell script to produce a backup of my database run on a cron job every 2 days.

How can I put the date in this format mm_dd_yyyy in the output filename?
mysqldump -uadmin -ppwd inve_db --all --add-drop-table -Q | gzip > "/home/backup/mysqlbu_inve_db.sql.gz" 2>>"/home/backup/logs/Errorlog.txt"

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Eddie ShipmanAll-around developerAsked:
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simon3270Commented:
> "/home/backup/mysqlbu_inve_db.sql.$(DATE '+%M_%D_%y").gz"
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simon3270Commented:
Oops, caps-lock invert when I pasted this!

should be:
   > "/home/backup/mysqlbu_inve_db.sql.$(date '+%m_%d_%Y").gz"
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simon3270Commented:
Not sure what's happening tody.  one more time, with feeling:

   > "/home/backup/mysqlbu_inve_db.sql.$(date '+%m_%d_%Y').gz"

(wrong quote at the end of the date format)
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Eddie ShipmanAll-around developerAuthor Commented:
Will try it out later today.
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pilson66Commented:
tstamp=$(date '+%m_%d_%Y'); mysqldump -uadmin -ppwd inve_db --all --add-drop-table -Q | gzip > "/home/backup/mysqlbu_inve_db-${tstamp}.sql.gz" 2>>"/home/backup/logs/Errorlog.txt"

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Eddie ShipmanAll-around developerAuthor Commented:
Worked perfectly. Had a problem with another script called right after it but this part worked correctly.
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TintinCommented:
I would highly recommend that you don't use ambiguous date formats.

Best to use YYYY_MM_DD

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simon3270Commented:
with the added benefit that files are sorted in date order automatically
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