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Linux Common Operations

Gen Random data​

Also used to test IO performance.

dd if=/dev/urandom of=random_data.bin bs=1M count=1024

Enable Coredump​

ulimit -c unlimited
echo "core.%e.%p" > /proc/sys/kernel/core_pattern

Check Disk Space Usage​

  • ncdu: usually used to clean the file system, find out big files.
  • du

Watch the specified file and sync it to test enviroment when changed.​

[[File Transfering#rsync]]


while true; do inotifywait file.py; scp file.py root@x.x.x.x:/root; done;


while true; do inotifywait -r /path/to/src; rsync -av --delete /src /dst; done;

Network​

  • ip
  • netstat
  • nload: show realtime network load graph in terminal