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y0geshx / swappiness.md
Created October 23, 2023 09:27

Swappiness controls the tendancy the kernel wishes to swap.

Even with free memory the kernel may swap.

100 means aggressively swap 0 means wait until the last minute to swap

To check current swappiness cat /proc/sys/vm/swappiness

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colematt / Backup-and-Restore-GPG-and-SSH-keys.md
Created November 16, 2020 03:24
[Backup and Restore GPG and SSH keys] #git #gpg #ssh

Backup

  1. Copy both id_rsa and id_rsa.pub from ~/.ssh/ to a USB drive. Identify the private key by executing the following command. 
    gpg --list-secret-keys --keyid-format LONG
  2. It will show something similar to this. 
    sec   4096R/3AA5C34371567BD2 2016-03-10 [expires: 2017-03-10]