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ps: Add the -a option, to list all processes associated with terminals

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Sam Atkins 2023-05-14 13:44:40 +01:00 committed by Andreas Kling
parent afb55d9fd8
commit a6e701a67b
Notes: sideshowbarker 2024-07-17 18:49:10 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/a6e701a67b
Pull-request: https://github.com/SerenityOS/serenity/pull/18856
Reviewed-by: https://github.com/awesomekling
2 changed files with 11 additions and 2 deletions
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3
Base/usr/share/man/man1/ps.md
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@ -5,7 +5,7 @@ ps - list currently running processes
## Synopsis
```**sh
$ ps [--version] [-A] [-e] [-f] [-q pid-list]
$ ps [--version] [-a] [-A] [-e] [-f] [-q pid-list]
```
## Description
@ -15,6 +15,7 @@ For each process, print its PID (process ID), to which TTY it belongs, and invok
## Options
* `-a`: Consider all processes that are associated with a TTY.
* `-A` or `-e`: Consider all processes, not just those in the current TTY.
* `-f`: Also print for each process: UID (as resolved username), PPID (parent PID), and STATE (Runnable, Sleeping, Selecting, Reading, etc.)
* `-q pid-list`: Only consider the given PIDs, if they exist.

10
Userland/Utilities/ps.cpp
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@ -54,10 +54,12 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
};
bool every_process_flag = false;
bool every_terminal_process_flag = false;
bool full_format_flag = false;
StringView pid_list;
Core::ArgsParser args_parser;
args_parser.add_option(every_terminal_process_flag, "Show every process associated with terminals", nullptr, 'a');
args_parser.add_option(every_process_flag, "Show every process", nullptr, 'A');
args_parser.add_option(every_process_flag, "Show every process (Equivalent to -A)", nullptr, 'e');
args_parser.add_option(full_format_flag, "Full format", nullptr, 'f');
@ -140,8 +142,14 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
for (auto const& process : processes) {
auto tty = TRY(String::from_deprecated_string(process.tty));
if (!every_process_flag && tty != this_pseudo_tty_name)
if (every_process_flag) {
// Don't skip any.
} else if (every_terminal_process_flag) {
if (tty.is_empty())
continue;
} else if (tty != this_pseudo_tty_name) {
continue;
}
Vector<String> row;
TRY(row.try_resize(columns.size()));