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Re: [PROGRAMMERING] Hvorfor er 0 == 1?

Jens Bang <sslug@sslug> writes:

> FileCount=0
>
> for X in backup*
> do
>   FileCount=$((FileCount+1))
> done

Dit problem skyldes at shellen opfører sig anderledes end du forventer
når der ikke findes nogle backup-kataloger. Når shellen ikke kan finde
nogle filer når den forsøger at folde 'backup*' ud, så lader den det
bare stå.

Det vil sige at du tæller en gang for 'backup*', hvis der ikke er
nogle backup-filer, og ellers en gang per fil.

Du kunne have set det ved at skrive $X ud i din løkke.

//Makholm

 
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