ksh integer variable assignment

[alfie002]

Dear all,

I have got a bit of a mind block at the moment. Can anyone tell me why this KSH code isn't working ?

if [ ${CurrentBackup} == 0]; then
PreviousBackup = (10 - (${CurrentNumber} - 1))
else
PreviousBackup = (${CurrentNumber -1 )
fi

All the variables fines, I get an error message complaining about the "(" on line 1.

Thanks

Alf

 

[feherke]

Hi

if ((CurrentBackup==0)); then
  PreviousBackup=$((10-(CurrentNumber-1)))
else
  PreviousBackup=$((CurrentNumber-1))
fi

Tested with (pd)[tt]ksh[/tt].

Feherke.

http://rootshell.be/~feherke/

 

[aigles]

Another syntax :

integer CurrentBackup PreviousBackup CurrentNumber

if ((CurrentBackup==0)); then
  (( PreviousBackup=10-(CurrentNumber-1) ))
else
  (( PreviousBackup=CurrentNumber-1 ))
fi

Jean-Pierre.

 

[alfie002]

thanks all