How can I check if binary is present

[bricebou]

Using image-optimizer on Linux systems, I'd like to check if optimizers binaries are installed or not but I can't figure how to do this...

Can you give me some advice or piece of code to do that ?

Thanks in advance :)

[Tyjow]

Hi guys,

Try to use theses commands :)

which jpegoptim
which optipng
which pngquant
etc..