Linux – how to export all FreeIPA users list to a csv format

Yup, use -r:

scp -rp sourcedirectory user@dest:/path

• -r means recursive
• -p preserves modification times, access times, and modes from the original file.

Note: This creates the sourcedirectory inside /path thus the files will be in /path/sourcedirectory

You can put the variable assignments in one of the shell startup scripts:

/etc/profile
/etc/bash_profile
/etc/bashrc

for bash and some other shells, depending on how your particular distro is configured. There are equivalents for most shells. There is also a file

/etc/environment 

which is not a script but contains enviroment variable assignments, and is loaded at login via pam_env.so. Obviously this works only on systems that use PAM for authentication (almost all Linux distros, but probably not Solaris).