Eu defini um bom ambiente ksh no antigo unix
PATH=$PATH:/usr/lib/acct:/usr/sbin:/sbin:/usr/ucb
export PATH
EDITOR=vi
FCEDIT=vi
export EDITOR
export FCEDIT
HOSTNAME='uname -n'
HISTSIZE=500
LOGNAME=myname
TERM=386AT
PS1="\$LOGNAME@\$HOSTNAME:\$...
24.04.2015 / 14:43