diff options
| author | Martin Hässler <[email protected]> | 2013-11-09 21:04:06 +0100 |
|---|---|---|
| committer | Martin Hässler <[email protected]> | 2013-11-09 21:04:06 +0100 |
| commit | 7b739330bb459401f9c11f0f84912aedc7ee22cd (patch) | |
| tree | e1ffbca9adb63a1132c6c8af8236b725a8c5da56 /lib/kernel/src/os.erl | |
| parent | 768a64354e3d69b3c0840a84dd072601c67ca39d (diff) | |
| download | otp-7b739330bb459401f9c11f0f84912aedc7ee22cd.tar.gz otp-7b739330bb459401f9c11f0f84912aedc7ee22cd.tar.bz2 otp-7b739330bb459401f9c11f0f84912aedc7ee22cd.zip | |
Add os:unsetenv/1
New BIF os:unsetenv/1 which deletes an environment variable and
returns 'true'.
Does not change any old functionality.
Calls the libc function unsetenv(3) on UNIX and
SetEnvironmentVariableW(key, NULL) on Windows. The unicode support
is the same as for os:getenv and os:putenv.
Diffstat (limited to 'lib/kernel/src/os.erl')
| -rw-r--r-- | lib/kernel/src/os.erl | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl index ded03361ee..9415593485 100644 --- a/lib/kernel/src/os.erl +++ b/lib/kernel/src/os.erl @@ -26,7 +26,7 @@ %%% BIFs --export([getenv/0, getenv/1, getpid/0, putenv/2, timestamp/0]). +-export([getenv/0, getenv/1, getpid/0, putenv/2, timestamp/0, unsetenv/1]). -spec getenv() -> [string()]. @@ -58,6 +58,12 @@ putenv(_, _) -> timestamp() -> erlang:nif_error(undef). +-spec unsetenv(VarName) -> true when + VarName :: string(). + +unsetenv(_) -> + erlang:nif_error(undef). + %%% End of BIFs -spec type() -> {Osfamily, Osname} when |