Trace system calls of a process

Trace network and file syscalls of a running process

strace -f -e trace=network,file -p <pid>
tool
linux133 commands
tags
linuxdebugmonitoring

More linux commands

  • CPU performance counters
    perf stat -e cycles,instructions,cache-misses -- sleep 5

    Hardware CPU counters during a 5-second window

  • Show CPU info
    lscpu | grep -E 'Model|Socket|Core|Thread|MHz'

    CPU model, socket/core/thread topology, and clock speed

  • Show memory slots (DIMM)
    dmidecode -t memory | grep -E 'Size|Speed|Locator|Type:'

    Physical DIMM slots: size, speed, type (requires root)

  • List PCI devices
    lspci -v | grep -A5 'VGA\|Ethernet\|NVMe'

    Network cards, GPUs, NVMe controllers with driver info

  • Set immutable file attribute
    chattr +i /etc/resolv.conf && lsattr /etc/resolv.conf

    Prevent any user (incl. root) from modifying the file

all 133 linux commands