Update cheatsheets

tldr/az-serial-console

@@ -0,0 +1,18 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# az serial-console
+
+> Connect to the serial console of a Virtual Machine.
+> Part of `azure-cli` (also known as `az`).
+> More information: <https://learn.microsoft.com/cli/azure/serial-console>.
+
+- Connect to a serial console:
+
+`az serial-console connect --resource-group {{Resource_Group_Name}} --name {{Virtual_Machine_Name}}`
+
+- Terminate the connection:
+
+`<Ctrl>-]`

tldr/az-vm

@@ -9,9 +9,9 @@ source: https://github.com/tldr-pages/tldr.git
 > Part of `azure-cli` (also known as `az`).
 > More information: <https://learn.microsoft.com/cli/azure/vm>.
 
-- List details of available Virtual Machines:
+- Display a table of available Virtual Machines:
 
-`az vm list`
+`az vm list --output table`
 
 - Create a virtual machine using the default Ubuntu image and generate SSH keys:
 

tldr/linux/chat

@@ -0,0 +1,38 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# chat
+
+> Automate conversations with a modem or serial device.
+> Commonly used to establish PPP (Point-to-Point Protocol) connections.
+> More information: <https://manned.org/chat.8>.
+
+- Execute a chat script directly from the command line:
+
+`chat '{{expect_send_pairs}}'`
+
+- Execute a chat script from a file:
+
+`chat -f '{{path/to/chat_script}}'`
+
+- Set a custom timeout (in seconds) for expecting a response:
+
+`chat -t {{timeout_in_seconds}} '{{expect_send_pairs}}'`
+
+- Enable verbose output to log the conversation to `syslog`:
+
+`chat -v '{{expect_send_pairs}}'`
+
+- Use a report file to log specific strings received during the conversation:
+
+`chat -r {{path/to/report_file}} '{{expect_send_pairs}}'`
+
+- Dial a phone number using a variable, substituting `\T` in the script:
+
+`chat -T '{{phone_number}}' '{{"ATDT\T CONNECT"}}'`
+
+- Include an abort condition if a specific string is received:
+
+`chat 'ABORT "{{error_string}}" {{expect_send_pairs}}'`

tldr/mysql_secure_installation

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mysql_secure_installation
+
+> Set up MySQL to have better security.
+> More information: <https://dev.mysql.com/doc/refman/en/mysql-secure-installation.html>.
+
+- Start an interactive setup:
+
+`mysql_secure_installation`
+
+- Use specific host and port:
+
+`mysql_secure_installation --host={{host}} --port={{port}}`
+
+- Display help:
+
+`mysql_secure_installation --help`

tldr/unzip

@@ -31,4 +31,4 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Extract a specific file from an archive:
 
-`unzip -j {{path/to/archive.zip}} {{path/to/file_in_archive1 path/to/file_in_archive2 ...}}`
+`unzip -j {{path/to/archive.zip}} {{path/to/file1_in_archive path/to/file2_in_archive ...}}`