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pgrep: Add -d option to specify a pid delimiter

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This is useful for commands which expect a comma-separated list of
pids.
This commit is contained in:
Tim Ledbetter 2023-05-15 17:35:02 +01:00 committed by Andreas Kling
parent e30dcc7391
commit 5a9a27cea0
Notes: sideshowbarker 2024-07-17 02:28:18 +09:00 
Author: https://github.com/tcl3
Commit: https://github.com/SerenityOS/serenity/commit/5a9a27cea0
Pull-request: https://github.com/SerenityOS/serenity/pull/18857
Reviewed-by: https://github.com/caoimhebyrne ✅
1 changed files with 12 additions and 1 deletions
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13
Userland/Utilities/pgrep.cpp
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@ -19,11 +19,13 @@ ErrorOr<int> serenity_main(Main::Arguments args)
TRY(Core::System::unveil("/etc/passwd", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
auto pid_delimiter = "\n"sv;
bool case_insensitive = false;
bool invert_match = false;
StringView pattern;
Core::ArgsParser args_parser;
args_parser.add_option(pid_delimiter, "Set the string used to delimit multiple pids", "delimiter", 'd', nullptr);
args_parser.add_option(case_insensitive, "Make matches case-insensitive", nullptr, 'i');
args_parser.add_option(invert_match, "Select non-matching lines", "invert-match", 'v');
args_parser.add_positional_argument(pattern, "Process name to search for", "process-name");
@ -50,9 +52,18 @@ ErrorOr<int> serenity_main(Main::Arguments args)
quick_sort(matches);
auto displayed_at_least_one = false;
for (auto& match : matches) {
outln("{}", match);
if (displayed_at_least_one)
out("{}{}"sv, pid_delimiter, match);
else
out("{}"sv, match);
displayed_at_least_one = true;
}
if (displayed_at_least_one)
outln();
return 0;
}