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On Linux, /proc contains ~60 non-PID entries (acpi, cpuinfo, meminfo, etc.), so shell expansion of /proc/* produces a flood of errors. Add centralized helpers (parse_pid_arg, is_non_pid_proc_path) and use them across all tools to silently skip non-PID /proc paths, enabling the Solaris/illumos idiom of `tool /proc/*` to work on Linux. Also accept /proc/PID paths in resolve_operand, resolve_operand_with_tid, and ptree, and update man page documentation accordingly. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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On Linux, /proc contains ~60 non-PID entries (acpi, cpuinfo, meminfo, etc.), so shell expansion of /proc/* produces a flood of errors. Add centralized helpers (parse_pid_arg, is_non_pid_proc_path) and use them across all tools to silently skip non-PID /proc paths, enabling the Solaris/illumos idiom of
tool /proc/*to work on Linux.Also accept /proc/PID paths in resolve_operand, resolve_operand_with_tid, and ptree, and update man page documentation accordingly.
Fixes #56