tldr/pages/linux/strace.md

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# strace
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> Troubleshooting tool for tracing system calls.
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- Start tracing a specific process by its PID:
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`strace -p {{pid}}`
- Trace a process and filter output by system call:
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`strace -p {{pid}} -e {{system call name}}`
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- Count time, calls, and errors for each system call and report a summary on program exit:
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`strace -p {{pid}} -c`
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- Show the time spent in every system call:
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`strace -p {{pid}} -T`