trouble with name increment

meaulnes · Post by **meaulnes** » Sat Jan 14, 2012 9:59 am

I am trying to write a script that records a window on my screen. No pb with that.
To go further I would like to choose an incremental fileName for output incrementing if the fileName already exist.
I have trouble doing it so before dealing with the incrementation itself I want to check I can substitute the calculated name in the ffmpeg command.

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filename="~/Bureau/essai"

index=1 #I will deal with the incrementation of index after this part works

mystring="${fileName}${index}.mkv" #omce I have a proper index I concatenate the name with index and name extension

echo ${mystring} # gives ~/Bureau/essai1.mkv seems to be what I expect

ffmpeg -f alsa .....  -y ${mystring}  # gives error message ~/Bureau/essai1.mkv: No such file or directory despite -y to force overwriting

However if I put the file name directly in the command like this

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ffmpeg -f alsa .....  -y ~/Bureau/essai1.mkv

it works perfectly. My question is : "What is wrong ?"

capmarvel · Post by **capmarvel** » Sat Jan 14, 2012 1:51 pm

You do realize this forum is for the BASH role-playing game, and not the BASH Linux shell, right?

meaulnes · Post by **meaulnes** » Sun Jan 15, 2012 1:09 am

No I didn't. I am sorry. I didn't even know that it exist.

capmarvel · Post by **capmarvel** » Sun Jan 15, 2012 7:51 am

Well it does, and its a great game!

PS- if you purchase a copy I'll help you finish your program

Post by **BASHMAN** » Mon Jan 16, 2012 3:36 am

capmarvel wrote:Well it does, and its a great game!

PS- if you purchase a copy I'll help you finish your program