[unix bash]How can I do this in one command?

[imported_Stew]

So, I want to execute these two commands as one line:

cd /usr/bin/
ls [a]*

How do I do it?
(I initially thought "ls [a]* /usr/bin/" would do it.)

 

[QuixoticOne]

IDK what exactly you want to do but --

This just leaves the current directory the same and runs the ls relative to the other place:
ls /usr/bin/[a]*

This runs the commands in a subshell process which then exits so your current shell's directory does not change but the sub-shell only runs ls from that changed directory:
(cd /usr/bin ; ls [a]*)

This combines the commands to one line in the current shell -- in the end your shell's in the new directory:
cd /usr/bin ; ls [a]*

 

[imported_Stew]

Thx, the first one is what I was looking for. 🙂

 

[dinkumthinkum]

that's the same as: ls /usr/bin/a*
(btw)