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edited Dec 18, 2017 at 21:10

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You aren't expandingEdit: as @StéphaneChazelas pointed out, the parameterproblem is likely that your script isn't being invoked with $COUNTbash in your arithmetic expression, so it's trying to run a commandand the COUNT(( )) and redirect that toconstruct won't work. Try running it from a file MAX_BACKUPSbash. shell or with bash my_script.sh

Also, that rm has the potential to fail spectacularly. Please read this FAQ.

You aren't expanding the parameter $COUNT in your arithmetic expression, so it's trying to run a command COUNT and redirect that to a file MAX_BACKUPS.

Also, that rm has the potential to fail spectacularly. Please read this FAQ.

Edit: as @StéphaneChazelas pointed out, the problem is likely that your script isn't being invoked with bash, and the (( )) construct won't work. Try running it from a bash shell or with bash my_script.sh

Also, that rm has the potential to fail spectacularly. Please read this FAQ.

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answered Dec 18, 2017 at 16:46

m0dular

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You aren't expanding the parameter $COUNT in your arithmetic expression, so it's trying to run a command COUNT and redirect that to a file MAX_BACKUPS.

Also, that rm has the potential to fail spectacularly. Please read this FAQ.