env (display and set environmental variables)
Displays a list of environmental variables. You can specify an environmental variable in the command to set the variable. Format: env variablename=value
Examples: env
env HISTSIZE=100
The env command alone displays a list of environmental variables and their values. The second example sets HISTSIZE to 100. Opt | What It Does | Example |
|---|
-u | unset an environmental variable | env -u HISTSIZE | |