Multiple pipes
Posted: 2019-09-09T13:53:00-07:00
Hi,
I've been trying for some time to pipe Fred's scripts together with the convert command in bash to alter a series of images in a certain way, but have not been successful. I would like to start with running a convert command, then use the output form the convert command in Fred's script, then use the output form Fred's script in a second convert command. I want to avoid to create temporary files which will then have to be deleted, and I want to execute the commands in this particular order.
Here I have provided a simplified example:
I'm thrown the following error each time, and I can't figure out how to get around it:
What am I doing wrong? Is it not possible to nest these commands through multiple pipes?
I've been trying for some time to pipe Fred's scripts together with the convert command in bash to alter a series of images in a certain way, but have not been successful. I would like to start with running a convert command, then use the output form the convert command in Fred's script, then use the output form Fred's script in a second convert command. I want to avoid to create temporary files which will then have to be deleted, and I want to execute the commands in this particular order.
Here I have provided a simplified example:
Code: Select all
convert logo: -colorspace gray jpg:- | bash midtonebalance.sh -rc -10 -gm 0 -by 50 -p - jpg:- | convert - -colorspace RGB output.jpgCode: Select all
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/556.
convert: no images defined `output.jpg' @ error/convert.c/ConvertImageCommand/3273.