4.2BSD/usr/man/man1/printenv.1

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.TH PRINTENV 1 "24 February 1979"
.UC
.SH NAME
printenv \- print out the environment
.SH SYNOPSIS
.B printenv
[ name ]
.SH DESCRIPTION
.I Printenv
prints out the values of the variables in the environment.  If a
.I name
is specified, only its value is printed.
.PP
If a
.I name
is specified and it is not defined in the environment,
.I printenv
returns exit status 1, else it returns status 0.
.SH SEE ALSO
sh(1), environ(7), csh(1)