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diff --git a/linux/misc.md b/linux/misc.md deleted file mode 100644 index 326a5ad5..00000000 --- a/linux/misc.md +++ /dev/null @@ -1,77 +0,0 @@ -# Misc - -## Reverse sshfs - -https://blog.dhampir.no/content/reverse-sshfs-mounts-fs-push - -You need the SFTP server program on your local machine (on Debian, the `openssh-server` package) and sshfs on the remote machine. - -## Find non-Debian packages - -``` -aptitude search '~S ~i !~ODebian' -``` - -## Memory usage queries - -### systemd - -``` -systemd-cgtop -m -``` - -Drill down with: - -``` -systemd-cgtop -m user.slice/user-1000.slice -``` - -### smem - -``` -sudo smem -P beam.smp -kta -``` - -## Quick rerouting of browser traffic through another host - -`ssh -D 1234 host` creates a Socks proxy on `localhost:1234` that sends traffic through `host`. - -By enabling "allow extension to control proxy settings" in the [multi account containers](https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/) Firefox add-on, you can make containers use specific proxies. - -## Email forwarding via IMAP - -When you have multiple email addresses, you have multiple options to use them. - -Traditionally, people used redirection/forwarding to make email arriving at `from@example.com` go to `to@example.net` instead. - -If mail from `example.com` and `example.net` is handled by different servers, typically you can configure the `example.com` mail server to resend any message arriving to the `from` address to `to@example.net`. - -However, nowadays with spam filtering, the `example.net` mail server can reject these emails as spam, sometimes silently. - -For safer redirects, you can: - -* Use the same mail server for both accounts. - However, this sometimes cannot be done or has extra cost and complexity. - -* Configure the destination email server to fetch email from the origin mail server. - For example, Gmail can do this, but the fetching period can be as long as 15 minutes. - This can be inconvenient when receiving confirmation emails, etc. - - Additionally, operators of the destination email server now have your credentials. - -A third option is to run this fetching process yourself. - -<https://github.com/lefcha/imapfilter> supports connecting to an IMAP account, waiting until messages to arrive, and moving them to another IMAP account. - -Benefits: - -* IMAPFilter can use IMAP idle to request the IMAP server to notify when messages arriving, so forwarding happens without a polling delay. -* Because IMAP is used on both sides, no spam filtering happens. -* IMAPFilter is [packaged for many distributions](https://repology.org/project/imapfilter/versions). - -Drawbacks: - -* Requires additional infrastructure. -* If IMAPFilter stops working, email stops being forwarded without warning. - -Refer to [this Python module](../scripts/p7s/mail/__init__.py) for scripts that configure IMAPFilter as a systemd service, with credentials from Bitwarden. |