add setup ssh-FAQ

Makefile

@@ -20,22 +20,28 @@ mandir = $(HOME)/.local/man/man6
 kralizec_docs != grep -rl "^section:" kralizec 
 kralmans = $(kralizec_docs:kralizec/%/README.md=$(mandir)/%.6)
 
-krov_docs != grep -rl "^section:" krov 
-krovmans = $(krov_docs:krov/%/README.md=$(mandir)/%.6)
-
 $(mandir)/%.6: kralizec/%/README.md
 	lowdown -stman $< > $@
 
+krov_docs != grep -rl "^section:" krov 
+krovmans = $(krov_docs:krov/%/README.md=$(mandir)/%.6)
+
 $(mandir)/%.6: krov/%/README.md
 	lowdown -stman $< > $@
 
+setup_docs != grep -rl "^section:" setup 
+setupmans = $(setup_docs:setup/%.md=$(mandir)/%.6)
+
+$(mandir)/%.6: setup/%.md
+	lowdown -stman $< > $@
+
 $(mandir):
 	mkdir -p $@
 
-$(kralmans) $(krovmans) :| $(mandir)
+$(kralmans) $(krovmans) $(setupmans) :| $(mandir)
 
 .PHONY: pages
-pages: $(kralmans) $(krovmans)
+pages: $(kralmans) $(krovmans) $(setupmans)
 	$(info $(kralmans))
 	@test ! $(command -v mandb) || mandb --user-db
 	$(info Open DMZ's man pages with 'man 6 <tab>')

setup/ssh_FAQ.md

@@ -0,0 +1,104 @@
+---
+volume: Decentrala
+section: 6
+title: ssh setup
+author: Malin
+source: dmz.rs
+---
+
+## Step 1: Basic `ssh`
+
+> I did stuff with my `ssh` and now things don't work. What do?
+
+Check the permissions on your `ssh` directory:
+
+```bash
+$ ls -d ~/.ssh
+drwxr-x--- - ghost  3 Dec 12:55 󰢬 /home/ghost/.ssh
+```
+
+This is wrong, because anyone in your `~` can see you `ssh` configuration files.
+
+```bash
+$ chmod -R 600 ~/.ssh
+$ ls -d ~/.ssh
+drw------- - ghost  3 Dec 12:55 󰢬 /home/ghost/.ssh
+```
+
+This is also wrong - entering a directory is the same as executing it.
+If you can't 'execute' the directory, you cannot enter it, and `ssh` cannot read the files.
+
+```bash
+$ chmod -R 700 ~/.ssh
+$ ls -l ~/.config
+
+-rwx------ 1 ghost dmz   578 Dec 27  2022 authorized hosts
+-rwx------ 1 ghost dmz  1145 Dec 27  2022 authorized keys
+-rwx------ 2 ghost dmz   366 Dec 14 18:36 config
+-rwx------ 1 ghost dmz   419 Dec 11  2023 id ed25519
+-rwx------ 1 ghost dmz   106 Dec 11  2023 id ed25519.pub
+-rwx------ 1 ghost dmz  2610 Dec 27  2022 id rsa
+-rwx------ 1 ghost dmz   578 Dec 27  2022 id rsa.pub
+-rwx------ 1 ghost dmz 28269 Dec 28 17:32 known hosts
+```
+
+Now all the files have 'read, write, and execute', but only for `$USER`.
+
+## Step 2: The Config File
+
+> I have 43 different `ssh` keys.  Something doesn't work with a program.  What do?
+
+- Option 1: Delete all of them and stop asking Santa for `ssh` keys.
+- Option 2: Define which one you want to use in the `~/.ssh/config` file.
+
+
+```
+Host soft
+    HostName soft.dmz.rs
+    Port 2222
+	User ghost
+	IdentityFile ~/.ssh/id rsa
+Host dmz
+    HostName dmz.rs
+    Port 123
+    User root
+Host krov
+	HostName dmz.rs
+	Port 5555
+	User ghost
+Host june
+	HostName 192.168.1.100
+	User ghost
+	ProxyJump krov
+```
+
+
+The first example lets you go to the `soft-serve` git-server just by typing
+
+```bash
+$ ssh soft
+```
+
+If you're not sure if ssh is using the right key, try with `-v` for 'verbose mode'.
+
+```bash
+$ ssh -vv soft
+```
+
+If you're not sure if ssh is using the right key, try with `-v` for 'verbose mode'.
+
+> `git` is not working with `ssh`
+
+`git` will not presume to use your `ssh` config file unless you tell it:
+
+```bash
+$ GIT_SSH_COMMAND="ssh -F ~/.ssh/config" git pull
+```
+
+If that works, you can make the change permanent for that one repository:
+
+
+```bash
+$ git config core.sshCommand "ssh -F ~/.ssh/config"
+```
+