Update cheatsheets

tldr/duckdb

@@ -16,10 +16,14 @@ source: https://github.com/tldr-pages/tldr.git
 
 `duckdb {{path/to/dbfile}}`
 
-- Directly query a CSV, JSON, or Parquet file:
+- Query a CSV, JSON, or Parquet file using SQL:
 
 `duckdb -c "{{SELECT * FROM 'data_source.[csv|csv.gz|json|json.gz|parquet]'}}"`
 
+- Directly query a CSV, JSON, or Parquet file using the `file` view:
+
+`duckdb {{data_source.[csv|csv.gz|json|json.gz|parquet]}} -c "{{ SELECT * FROM file }}"`
+
 - Run an SQL script:
 
 `duckdb -f {{path/to/script.sql}}`
@@ -28,10 +32,6 @@ source: https://github.com/tldr-pages/tldr.git
 
 `duckdb {{path/to/dbfile}} -cmd "{{SELECT DISTINCT * FROM tbl}}"`
 
-- Run SQL queries in file on database and keep the interactive shell open:
-
-`duckdb {{path/to/dbfile}} -init {{path/to/script.sql}}`
-
 - Read CSV from `stdin` and write CSV to `stdout`:
 
 `cat {{path/to/source.csv}} | duckdb -c "{{COPY (FROM read_csv('/dev/stdin')) TO '/dev/stdout' WITH (FORMAT CSV, HEADER)}}"`

tldr/linux/alsamixer

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# alsamixer
+
+> Graphical mixer for ALSA soundcard driver.
+> More information: <https://manned.org/man/alsamixer>.
+
+- Select the soundcard to use:
+
+`alsamixer {{[-c|--card]}} {{soundcard_number}}`
+
+- Select mixer device to control:
+
+`alsamixer {{[-D|--device]}} {{device_name}}`
+
+- Increase volume:
+
+`<w>`
+
+- Decrease volume:
+
+`<x>`
+
+- Quit alsamixer:
+
+`<Esc>`

tldr/linux/fwupdmgr

@@ -6,9 +6,10 @@ source: https://github.com/tldr-pages/tldr.git
 # fwupdmgr
 
 > Update device firmware, including UEFI, using `fwupd`.
-> More information: <https://fwupd.org/>.
+> See also: `fwupdtool`.
+> More information: <https://github.com/fwupd/fwupd/blob/main/src/fwupdmgr.md>.
 
-- Display all devices detected by fwupd:
+- Display all devices detected by `fwupd`:
 
 `fwupdmgr get-devices`
 
@@ -23,3 +24,7 @@ source: https://github.com/tldr-pages/tldr.git
 - Install firmware updates:
 
 `fwupdmgr update`
+
+- Remount `/boot` with more privileges if update complains about a read-only filesystem:
+
+`sudo mount {{[-o|--options]}} uid=1000,gid=1000,umask=0022 {{/dev/sdX}} /boot`

tldr/linux/fwupdtool

@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# fwupdtool
+
+> Update device firmware manually or manipulate firmware files.
+> See also: `fwupdmgr`.
+> More information: <https://github.com/fwupd/fwupd/blob/main/src/fwupdtool.md>.
+
+- Display all devices detected by `fwupd`:
+
+`fwupdtool get-devices`
+
+- Install firmware from a file:
+
+`fwupdtool install {{path/to/firmware}}`
+
+- Display help:
+
+`fwupdtool {{[-h|--help]}}`

tldr/linux/mkfs.fat

@@ -23,3 +23,7 @@ source: https://github.com/tldr-pages/tldr.git
 - Use 5 instead of 2 file allocation tables:
 
 `mkfs.fat -f 5 {{/dev/sdXY}}`
+
+- Specify filesystem type:
+
+`mkfs.fat -F {{12|16|32}} {{/dev/sdXY}}`

tldr/linux/parted

@@ -15,11 +15,15 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Create a new partition table of the specified label-type:
 
-`sudo parted {{/dev/sdX}} {{[-s|--script]}} mklabel {{aix|amiga|bsd|dvh|gpt|loop|mac|msdos|pc98|sun}}`
+`sudo parted {{/dev/sdX}} mklabel {{aix|amiga|bsd|dvh|gpt|loop|mac|msdos|pc98|sun}}`
 
-- Create a new `gpt` partition table with a 500MiB boot partition and give the rest for the system partition:
+- Create a new `gpt` partition table with a 500MiB boot partition and give the rest for the system partition (`--script` skips user intervention prompts):
 
-`sudo parted {{/dev/sdX}} {{[-s|--script]}} mklabel gpt mkpart primary 0% 500MiB mkpart primary 500MiB 100%`
+`sudo parted {{/dev/sdX}} {{[-s|--script]}} mklabel gpt mkpart "{{boot_partition_name}}" 0% 500MiB mkpart "{{system_partition_name}}" 500MiB 100%`
+
+- Set a partition to have its boot flag turned on:
+
+`sudo parted {{/dev/sdX}} set {{1}} boot on`
 
 - Start interactive mode with the specified disk selected:
 

tldr/linux/parted-interactive

@@ -21,7 +21,11 @@ source: https://github.com/tldr-pages/tldr.git
 
 `select {{/dev/sdX}}`
 
-- Create a 16 GB partition with the specified filesystem in interactive mode:
+- Create a 16 GB partition with the specified filesystem in interactive mode (`GPT` partition table):
+
+`mkpart {{partition_name}} {{btrfs|ext2|ext3|ext4|fat16|fat32|hfs|hfs+|linux-swap|ntfs|reiserfs|udf|xfs}} {{0%}} {{16G}}`
+
+- Create a 16 GB partition with the specified filesystem in interactive mode (`MBR` partition table):
 
 `mkpart {{primary|logical|extended}} {{btrfs|ext2|ext3|ext4|fat16|fat32|hfs|hfs+|linux-swap|ntfs|reiserfs|udf|xfs}} {{0%}} {{16G}}`
 

tldr/linux/setarch

@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# setarch
+
+> Change the reported architecture for a program's execution, primarily used to modify how programs behave based on system architecture.
+> Useful for compatibility testing or running legacy applications.
+> More information: <https://manned.org/setarch.8>.
+
+- Run a command as if the machine architecture is `i686` (useful for running 32-bit apps on a 64-bit kernel):
+
+`setarch i686 {{command}}`
+
+- Run a shell with the `x86_64` architecture:
+
+`setarch x86_64 {{bash}}`
+
+- Disable randomization of the virtual address space:
+
+`setarch {{linux32}} {{[-R|--addr-no-randomize]}} {{command}}`
+
+- List supported architectures:
+
+`setarch --list`
+
+- Display help:
+
+`setarch {{[-h|--help]}}`