Update cheatsheets

tldr/feh

@@ -16,6 +16,10 @@ source: https://github.com/tldr-pages/tldr.git
 
 `feh {{[-r|--recursive]}} {{path/to/images}}`
 
+- View images and display the file name at the top-left of the images:
+
+`feh {{[-d|--draw-filename]}} {{path/to/images}}`
+
 - View images without window borders:
 
 `feh {{[-x|--borderless]}} {{path/to/images}}`

tldr/fzf

@@ -29,6 +29,6 @@ source: https://github.com/tldr-pages/tldr.git
 
 `fzf {{[-q|--query]}} "^core go$ | rb$ | py$"`
 
-- Start `fzf` on entries that not match `pyc` and match exactly `travis`:
+- Start `fzf` on entries that do not match `pyc` and contain `travis`:
 
-`fzf {{[-q|--query]}} "\!pyc 'travis'"`
+`fzf {{[-q|--query]}} '!pyc travis'`

tldr/linux/dpkg-reconfigure

@@ -15,3 +15,7 @@ source: https://github.com/tldr-pages/tldr.git
 - Reconfigure console font setup:
 
 `dpkg-reconfigure console-setup`
+
+- Reconfigure the timezone:
+
+`dpkg-reconfigure tzdata`

tldr/linux/impala

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# impala
+
+> Manage WiFi networks through a TUI.
+> More information: <https://github.com/pythops/impala>.
+
+- Launch `impala` in station mode:
+
+`impala`
+
+- Launch `impala` in Access Point mode:
+
+`impala {{[-m|--mode]}} ap`
+
+- Switch between different sections:
+
+`{{<Tab>|<Shift Tab>}}`
+
+- Select a network to connect to:
+
+`<Space>`
+
+- Display hotkeys:
+
+`<?>`

tldr/linux/lsblk

@@ -38,4 +38,4 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Display a customized summary using a comma-separated list of columns:
 
-`lsblk {{[-o|--output]}} {{NAME,SERIAL,MODEL,TRAN,TYPE,SIZE,FSTYPE,MOUNTPOINT,...}}`
+`lsblk {{[-o|--output]}} {{NAME,ROTA,SERIAL,MODEL,TRAN,TYPE,SIZE,FSTYPE,MOUNTPOINT,...}}`

tldr/linux/lspci

@@ -12,22 +12,22 @@ source: https://github.com/tldr-pages/tldr.git
 
 `lspci`
 
-- Display additional information (Note: the `-v` flag can be repeated to increase verbosity):
+- Display [v]erbose information (Note: the `-v` flag can be repeated to increase verbosity):
 
 `lspci -v`
 
-- Display drivers and modules handling each device:
+- Display [k]ernel drivers and modules handling each device:
 
 `lspci -k`
 
-- Show a specific device:
+- [s]elect a specific device:
 
 `lspci -s {{00:18.3}}`
 
-- Dump info in a readable form:
+- Dump info in a ([m]achine) readable form:
 
 `lspci -vm`
 
-- Show PCI vendor and device codes alongside its name:
+- Show PCI vendor and device codes as both [n]umbers and [n]ames:
 
 `lspci -nn`

tldr/linux/systemctl-poweroff

@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl-poweroff
+
+> Power off the system.
+> See also: `poweroff`.
+> More information: <https://www.freedesktop.org/software/systemd/man/systemctl.html#poweroff>.
+
+- Power off the system:
+
+`systemctl poweroff`
+
+- Power off the system immediately without asking services to stop gracefully:
+
+`systemctl poweroff --force`
+
+- Power off the system immediately without sending notifications to logged-in users:
+
+`systemctl poweroff --force --no-wall`

tldr/linux/whatis

@@ -6,6 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # whatis
 
 > Display one-line descriptions from manual pages.
+> See also: `whereis`, `which`, `type`.
 > More information: <https://manned.org/whatis>.
 
 - Display a description from a man page:

tldr/linux/whereis

@@ -6,6 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # whereis
 
 > Locate the binary, source, and manual page files for a command.
+> See also: `which`, `whatis`, `type`.
 > More information: <https://manned.org/whereis>.
 
 - Locate binary, source and man pages for SSH:

tldr/type

@@ -7,6 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Display the type of command the shell will execute.
 > Note: All examples are not POSIX compliant.
+> See also: `whereis`, `which`, `whatis`.
 > More information: <https://www.gnu.org/software/bash/manual/bash.html#index-type>.
 
 - Display the type of a command:

tldr/vboxmanage

@@ -10,18 +10,34 @@ source: https://github.com/tldr-pages/tldr.git
 > Some subcommands such as `startvm` have their own usage documentation.
 > More information: <https://www.virtualbox.org/manual/ch08.html#vboxmanage-intro>.
 
-- Execute a VboxManage subcommand:
+- List all VirtualBox virtual machines:
 
-`VBoxManage {{subcommand}}`
+`VBoxManage list vms`
+
+- Show information about a particular virtual machine:
+
+`VBoxManage showvminfo {{name|uuid}}`
+
+- Start a virtual machine:
+
+`VBoxManage startvm {{name|uuid}}`
+
+- Start a virtual machine in headless mode:
+
+`VBoxManage startvm {{name|uuid}} --type headless`
+
+- Shutdown the virtual machine and save its current state:
+
+`VBoxManage controlvm {{name|uuid}} savestate`
+
+- Shutdown down the virtual machine without saving its state:
+
+`VBoxManage controlvm {{name|uuid}} poweroff`
+
+- Update VBox extension packs:
+
+`VBoxManage extpack install --replace {{VboxExtensionPackFileName}}`
 
 - Display help:
 
 `VBoxManage --help`
-
-- Display help for a specific subcommand:
-
-`VBoxManage --help {{clonevm|import|export|startvm|...}}`
-
-- Display version:
-
-`VBoxManage --version`

tldr/which

@@ -6,6 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # which
 
 > Locate a program in the user's path.
+> See also: `whereis`, `whatis`, `type`.
 > More information: <https://manned.org/which>.
 
 - Search the PATH environment variable and display the location of any matching executables: