yujqiao/catproc
Print the output of a running process observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 1502
- days_rel: n/a
- days_push: 1498
- n_releases_24m: 0
Adoption not part of the score
1193 stars · 26 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
catp is a Rust CLI utility that prints the output of an already-running process by using ptrace to intercept write syscalls. It lets you recover stdout/stderr from processes redirected to /dev/null without restarting them.
Use cases
- capture output of a process redirected to /dev/null
- see where a running process is printing
- recover stdout from a long-running process without restarting it
- debug a process whose output went to an unknown location
- inspect write syscalls of a live process
When to choose
- you need output from a process that is already running and cannot be restarted
- you are on x86_64 Linux and have ptrace/root privileges
- you want a lightweight single-binary tool with no setup
When to avoid
- you are not on x86_64 Linux
- you cannot run with ptrace privileges (usually root)
- the target process is IO-sensitive since ptrace slows down syscalls
- you need to capture output going forward with low overhead rather than a one-off peek
Facets
cli-tool · maturity maintenance
developer-tools cli logging developer-tools operating-systems cli rust ptrace process-debugging stdout-capture system-internals command-line linux
1 source
- readme: https://github.com/yujqiao/catproc · fetched 2026-08-28 · f43ad011d968
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| yujqiao/catproc | main | 23 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem