My application needs to call 'convert' - http://linux.about.com/od/commands/l/blcmdl1_convert.htm
But its not present on my redhat system. How / what do I install?
convert is part of the package ImageMagick; try sudo yum install ImageMagick
(or other privilege escalation method as appropriate to your system).
Next time you need a command like this you can figure out what package to install by running something like yum whatprovides '*/convert'
.
To install convert try package manager. Convert is part of ImageMagick package, convert is one of utilities.
Under Debian is possible use
sudo dpkg --install imagemagick
or
sudo apt-get install imagemagick
It is about 419 MB of space.
For the installation in Fedora 27 from the terminal:
sudo yum install ImageMagick -y