PRINTENV(1) BSD General Commands Manual PRINTENV(1)NAME
printenv, env — print out the environment, set and print environment
env [-] [name=value ...] [command]
Printenv prints out the names and values of the variables in the environ‐
ment, with one name/value pair per line. If name is specified, only its
value is printed.
If a name is specified and it is not defined in the environment, printenv
returns exit status 1, else it returns status 0.
Env executes command after modifying the environment as specified on the
command line. The option name=value specifies an environmental variable,
name, with a value of value. The option ‘-’ causes env to completely
ignore the environment it inherits.
If no command is specified, env prints out the names and values of the
variables in the environment, with one name/value pair per line.
SEE ALSOcsh(1), sh(1), execvp(3), environ(7)HISTORY
The printenv command appeared in 3.0BSD.
Env doesn't handle commands with equal (``='') signs in their names, for
3rd Berkeley Distribution June 6, 1993 3rd Berkeley Distribution