README.md : Fixed ssh authorized keys

README.md

@@ -14,18 +14,9 @@ Host \$HOST_NAME
 
 Now you can just connect using ssh \$HOST_NAME
 
-## Pythons commands
-
-```bash
-# Update every packages
-pip freeze | cut -d = -f 1 | xargs -n1 pip install -U
-# Uninstall every packages
-pip freeze | cut -d = -f 1 | xargs -n1 pip uninstall -y
-```
-
 ## Docker commands
 
-```bash
+```sh
 # Remove every images
 docker images --format="{{.ID}}" | xargs docker rmi
 # Remove every containers
@@ -50,7 +41,7 @@ for(lib in .libPaths()) lapply(my_packages$Package, remove.packages, lib = lib)
 
 ## Setup Git SSH key
 
-```bash
+```sh
 # Generate a SSH key pair
 ssh-keygen -t rsa -b 4096 -o -a 100 -C "email@example.com" -f ~/.ssh/$KEY_NAME
 ssh-keygen -t ed25519 -a 100 -C "email@example.com" -f ~/.ssh/$KEY_NAME
@@ -63,7 +54,7 @@ ssh -T git@github.com
 git remote set-url origin git@github.com:username/your-repository.git
 # Add key to SSH config file (~/.ssh/config)
 echo -e "\n\nHost github.com\n\tIdentityFile ~/.ssh/$KEY_NAME" >> ~/.ssh/config
-cat KEY_FILE | ssh REMOTE "cat >> ~/authorized_keys"
+cat KEY_FILE | ssh REMOTE "cat >> ~/.ssh/authorized_keys"
 ```
 
 ## Font ligature test
@@ -79,7 +70,7 @@ cat KEY_FILE | ssh REMOTE "cat >> ~/authorized_keys"
 
 ## QEMU cheat sheet
 
-```bash
+```sh
 # Creating the disk image
 qemu-img create -f qcow2 DISK_NAME.img 15G
 
@@ -95,7 +86,7 @@ qemu-system-x86_64 $DISK_NAME.img \
 
 ### IP Host (eth1 has internet, eth0 is remote)
 
-```bash
+```sh
 # Enable kernel port forwarding
 sysctl -w net.ipv4.ip_forward=1
 # Enable at reboot
@@ -115,7 +106,7 @@ iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
 
 ### IP Remote
 
-```bash
+```sh
 connmanctl
 config <eth0> --ipv4 manual 192.168.137.2 255.255.255.0 192.168.137.1 --nameservers <DNS-SERVER>
 ```
@@ -126,7 +117,7 @@ config <eth0> --ipv4 manual 192.168.137.2 255.255.255.0 192.168.137.1 --nameserv
 
 In Windows you must have _Adobe Digital Editions_ and _Calibre_ using Chocolatey
 
-```bash
+```sh
 choco install -y adobedigitaleditions calibre
 ```
 
@@ -145,7 +136,7 @@ choco install -y adobedigitaleditions calibre
 
 ## Loop devices
 
-```bash
+```sh
 # Create loop device to $BLOCK_PATH of 4G
 dd if=/dev/zero of=$BLOCK_PATH bs=1M count=4096
 # Create loop filesystem
@@ -162,7 +153,7 @@ rm $BLOCK_PATH
 
 ## Install img.xz
 
-```bash
+```sh
 xzcat $IMG_FILE | dd of=/dev/$DEVICE bs=64k oflag=dsync status=progress
 ```
 
@@ -179,7 +170,7 @@ root    hard    nofile    64000
 
 ## Verify a PGP Signature
 
-```bash
+```sh
 mkdir /home/$USER/.XDG/data/gnupg
 chmod 700 /home/$USER/.XDG/data/gnupg
 gpg --import $PUBLIC_KEY
@@ -187,3 +178,14 @@ chmod 600 /home/$USER/.XDG/data/gnupg/$PUBLIC_KEY
 gpg --verify $SIGNATURE.sig $FILE
 ```
 
+### Self-signed OpenSSL
+
+#### interactive
+```sh
+openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -sha256 -days 365
+```
+
+#### non-interactive and 10 years expiration
+```sh
+openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -sha256 -days 3650 -nodes -subj '/C=XX/ST=StateName/L=CityName/O=CompanyName/OU=CompanySectionName/CN=CommonNameOrHostname'
+```