8faeb13036
The -p flag is equivalent to the previous behavior: outputting the uptime in a human-readable form. We don't seem to expose the number of online users or the load averages, so those sections are missing from the output compared to those OSes.
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Karol Kosek <krkk@serenityos.org>
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* Copyright (c) 2024, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/NumberFormat.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/DateTime.h>
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#include <LibCore/File.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::pledge("stdio rpath"));
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bool pretty_output = false;
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Core::ArgsParser args_parser;
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args_parser.add_option(pretty_output, "Output only the uptime, in human-readable format", "pretty", 'p');
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args_parser.parse(arguments);
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auto file = TRY(Core::File::open("/sys/kernel/uptime"sv, Core::File::OpenMode::Read));
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TRY(Core::System::pledge("stdio"));
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Array<u8, BUFSIZ> buffer;
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auto read_buffer = TRY(file->read_some(buffer));
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auto maybe_seconds = AK::StringUtils::convert_to_uint(StringView(read_buffer));
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if (!maybe_seconds.has_value())
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return Error::from_string_literal("Couldn't convert to number");
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auto seconds = maybe_seconds.release_value();
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if (pretty_output) {
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outln("Up {}", human_readable_time(seconds));
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} else {
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auto current_time = TRY(Core::DateTime::now().to_string());
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// FIXME: To match Linux and the BSDs, we should also include the number of current users,
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// and some load averages, but these don't seem to be available yet.
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outln("{} up {}", current_time, human_readable_digital_time(seconds));
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}
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return 0;
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}
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