No! The idea is thge same the lingo is very different. You should Read some manpages on this they shipped with your osx, in *nix world you gaet a lot of freedom in this aspect so i suggest you invest some time to developping shellscripts. Personaly id prefeer zsh but let us contend with sh isntead.
Okeay lets create a file any name will suffce teh on firts line of that file define what shell interpretter you want to use. so type
#! /bin/sh
# now the shebang (sharp=# !=bang) line above is important to know
# what shell to use out of many. Theese lines are offcourse comments!
#now add the commands youd normaly execute:
render -r mr -cam camera1 -im camera1_output scenefile.ma
render -r mr -cam camera2 -im camera2_output scenefile.ma
render -r mr -cam camera3 -im camera3_output scenefile.ma
then save the file
Executing the file... well your not done yet.
you could type
sh filename
but on the long run this becomes tedious. so tpe chmod +x shellscript name and now you could execute it by thyping just its name.
Note its cutomary to have .sh extension for sh shellscripts tough not neccesery.
The language and cappabilities of different shells wary widely thets why i asked what shell you prefeer. its best to work with that what you use.
