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-rw-r--r-- | process.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -2778,6 +2778,10 @@ rb_f_system(int argc, VALUE *argv) * * If a hash is given as +env+, the environment is * updated by +env+ before <code>exec(2)</code> in the child process. + * If a pair in +env+ has nil as the value, the variable is deleted. + * + * # set FOO as BAR and unset BAZ. + * pid = spawn({"FOO"=>"BAR", "BAZ"=>nil}, command) * * If a hash is given as +options+, * it specifies |