Update cheatsheets

tldr/linux/pve-firewall

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pve-firewall
+
+> Manage Proxmox VE Firewall.
+> More information: <https://pve.proxmox.com/wiki/Firewall>.
+
+- Compile and print all firewall rules:
+
+`pve-firewall compile`
+
+- Show information about the local network:
+
+`pve-firewall localnet`
+
+- Restart the Proxmox VE Firewall service:
+
+`pve-firewall restart`
+
+- Start the Proxmox VE Firewall service:
+
+`pve-firewall start`
+
+- Stop the Proxmox VE Firewall service:
+
+`pve-firewall stop`
+
+- Simulate all firewall rules:
+
+`pve-firewall simulate`
+
+- Show the status of Proxmox VE Firewall:
+
+`pve-firewall status`

tldr/linux/pvecm

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pvecm
+
+> Proxmox VE Cluster Manager.
+> More information: <https://pve.proxmox.com/pve-docs/pvecm.1.html>.
+
+- Add the current node to an existing cluster:
+
+`pvecm add {{hostname_or_ip}}`
+
+- Add a node to the cluster configuration (internal use):
+
+`pvecm addnode {{node}}`
+
+- Display the version of the cluster join API available on this node:
+
+`pvecm apiver`
+
+- Generate new cluster configuration:
+
+`pvecm create {{clustername}}`
+
+- Remove a node from the cluster configuration:
+
+`pvecm delnode {{node}}`
+
+- Display the local view of the cluster nodes:
+
+`pvecm nodes`
+
+- Display the local view of the cluster status:
+
+`pvecm status`

tldr/linux/pveperf

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pveperf
+
+> A benchmarking tool in Proxmox Server. Gather CPU and hard disk performance data for the hard disk.
+> More information: <https://pve.proxmox.com/pve-docs/pveperf.1.html>.
+
+- Show CPU and hard disk performance data for the hard disk mounted at `/`:
+
+`pveperf`

tldr/linux/qm-nbdstop

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# qm nbdstop
+
+> Stop embedded nbd server.
+> More information: <https://pve.proxmox.com/pve-docs/qm.1.html>.
+
+- Stop embedded nbd server:
+
+`qm nbdstop {{VM_ID}}`

tldr/linux/qm-stop

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# qm stop
+
+> Stop a virtual machine.
+> More information: <https://pve.proxmox.com/pve-docs/qm.1.html>.
+
+- Stop a virtual machine immediately:
+
+`qm stop {{VM_ID}}`
+
+- Stop a virtual machine and wait for at most 10 seconds:
+
+`qm stop --timeout {{10}} {{VM_ID}}`
+
+- Stop a virtual machine and skip lock (only root can use this option):
+
+`qm stop --skiplock {{true}} {{VM_ID}}`
+
+- Stop a virtual machine and don't deactivate storage volumes:
+
+`qm stop --keepActive {{true}} {{VM_ID}}`

tldr/linux/sestatus

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sestatus
+
+> Print the current SELinux status.
+> More information: <https://manned.org/sestatus>.
+
+- Print the current status:
+
+`sestatus`
+
+- Print the current states of all policy booleans:
+
+`sestatus -b`
+
+- Print the current file and process contexts:
+
+`sestatus -v`

tldr/linux/speaker-test

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# speaker-test
+
+> Speaker test tone generator for ALSA.
+> See also: `aplay`, `arecord`, `amixer`.
+> More information: <https://manned.org/speaker-test>.
+
+- Test the default speakers with pink noise:
+
+`speaker-test`
+
+- Test the default speakers with a sine wave:
+
+`speaker-test {{-t|--test}} sine {{-f|--frequency}} {{frequency}}`
+
+- Test the default speakers with a predefined WAV file:
+
+`speaker-test {{-t|--test}} wav`
+
+- Test the default speakers with a WAV file:
+
+`speaker-test {{-t|--test}} wav {{-w|--wavfile}} {{path/to/file}}`

tldr/linux/vzdump

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# vzdump
+
+> Backup Utility for virtual machines and containers.
+> More information: <https://pve.proxmox.com/pve-docs/vzdump.1.html>.
+
+- Dump a guest virtual machine into the default dump directory (usually `/var/lib/vz/dump/`), excluding snapshots:
+
+`vzdump {{vm_id}}`
+
+- Back up the guest virtual machines with the IDs 101, 102, and 103:
+
+`vzdump {{101 102 103}}`
+
+- Dump a guest virtual machine using a specific mode:
+
+`vzdump {{vm_id}} --mode {{suspend|snapshot}}`
+
+- Back up all guest systems and send an notification email to the root and admin users:
+
+`vzdump --all --mode {{suspend}} --mailto {{root}} --mailto {{admin}}`
+
+- Use snapshot mode (no downtime required) and a non-default dump directory:
+
+`vzdump {{vm_id}} --dumpdir {{path/to/directory}} --mode {{snapshot}}`
+
+- Back up all guest virtual machines excluding the IDs 101 and 102:
+
+`vzdump --mode {{suspend}} --exclude {{101, 102}}`