pages/*: reword descriptions to comply with the style guide (#11507)

* pages/*: reword descriptions to comply with the style guide

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/linux/addpart.md

@@ -1,7 +1,7 @@
 # addpart
 
-> Tells the Linux kernel about the existence of the specified partition.
-> The command is a simple wrapper around the `add partition` ioctl.
+> Tell the Linux kernel about the existence of the specified partition.
+> A simple wrapper around the `add partition` ioctl.
 > More information: <https://manned.org/addpart>.
 
 - Tell the kernel about the existence of the specified partition:

pages/linux/cpupower.md

@@ -1,7 +1,6 @@
 # cpupower
 
 > Tools regarding CPU power and tuning options.
-> This command is available as part of the `cpupower` package, or as part of `kernel-tools` on Fedora.
 > More information: <https://manned.org/cpupower>.
 
 - List CPUs:

pages/linux/curlie.md

@@ -1,6 +1,6 @@
 # curlie
 
-> Curlie is a frontend to curl that adds the ease of use of httpie.
+> A frontend to `curl` that adds the ease of use of `httpie`.
 > More information: <https://github.com/rs/curlie>.
 
 - Send a GET request:

pages/linux/duc.md

@@ -1,17 +1,18 @@
 # duc
 
-> Duc is a collection of tools for indexing, inspecting and visualizing disk usage. Duc maintains a database of accumulated sizes of directories of the file system, allowing queries this database, or create fancy graphs to show where data is.
+> A collection of tools for indexing, inspecting and visualizing disk usage.
+> Duc maintains a database of accumulated sizes of directories in the file system, allowing to query this database, or creating fancy graphs to show where data is.
 > More information: <https://duc.zevv.nl/>.
 
-- Index the /usr directory, writing to the default database location ~/.duc.db:
+- Index the `/usr` directory, writing to the default database location `~/.duc.db`:
 
 `duc index {{/usr}}`
 
-- List all files and directories under /usr/local, showing relative file sizes in a [g]raph:
+- List all files and directories under `/usr/local`, showing relative file sizes in a [g]raph:
 
 `duc ls --classify --graph {{/usr/local}}`
 
-- List all files and directories under /usr/local using treeview recursively:
+- List all files and directories under `/usr/local` using treeview recursively:
 
 `duc ls --classify --graph --recursive {{/usr/local}}`
 

pages/linux/dunstify.md

@@ -1,7 +1,7 @@
 # dunstify
 
-> A notification tool that is an extension of notify-send, but has more features based around dunst.
-> Works with all options that work for notify-send.
+> A notification tool that is an extension of `notify-send`, but has more features based around `dunst`.
+> Accepts all options of `notify-send`.
 > More information: <https://github.com/dunst-project/dunst/wiki/Guides>.
 
 - Show a notification with a given title and message:
@@ -16,6 +16,6 @@
 
 `dunstify "{{Title}}" "{{Message}}" -r {{123}}`
 
-- To see other possible options:
+- Display help:
 
 `notify-send --help`

pages/linux/libtool.md

@@ -1,6 +1,6 @@
 # libtool
 
-> Libtool is a generic library support script that hides the complexity of using shared libraries behind a consistent, portable interface.
+> A generic library support script that hides the complexity of using shared libraries behind a consistent, portable interface.
 > More information: <https://www.gnu.org/software/libtool/manual/libtool.html#Invoking-libtool>.
 
 - Compile a source file into a `libtool` object:

pages/linux/lvcreate.md

@@ -1,6 +1,6 @@
 # lvcreate
 
-> Creates a logical volume in an existing volume group. A volume group is a collection of logical and physical volumes.
+> Create a logical volume in an existing volume group. A volume group is a collection of logical and physical volumes.
 > See also: `lvm`.
 > More information: <https://man7.org/linux/man-pages/man8/lvcreate.8.html>.
 

pages/linux/retroarch.md

@@ -1,7 +1,7 @@
 # retroarch
 
-> RetroArch is a frontend for emulators, game engines and media players.
-> It is the reference implementation of libretro API.
+> A frontend for emulators, game engines and media players.
+> The reference implementation of the libretro API.
 > More information: <https://github.com/libretro/RetroArch>.
 
 - Start in the menu mode:

pages/linux/startx.md

@@ -1,6 +1,6 @@
 # startx
 
-> The startx script is a front end to xinit that provides a nice user interface for running a single session of the X Window System.
+> A front-end to `xinit` that provides a nice user interface for running a single session of the X Window System.
 > More information: <https://x.org/releases/X11R7.5/doc/man/man1/startx.1.html>.
 
 - Start an X session:

pages/linux/systemd-confext.md

@@ -1,7 +1,7 @@
 # systemd-confext
 
 > This command is an alias of `systemd-sysext`.
-> It follows the same principle as the `systemd-sysext`, but instead of working on `/usr` and `/opt`, `confext` will extend only `/etc`.
+> It follows the same principle as `systemd-sysext`, but instead of working on `/usr` and `/opt`, `confext` will extend only `/etc`.
 > More information: <https://www.freedesktop.org/software/systemd/man/latest/systemd-sysext.html>.
 
 - View documentation for the original command:

pages/linux/talk.md

@@ -1,6 +1,6 @@
 # talk
 
-> GNU/Talk is a visual communication program which copies lines from your terminal to that of another user.
+> A visual communication program which copies lines from your terminal to that of another user.
 > More information: <https://www.gnu.org/software/inetutils/manual/html_node/talk-invocation.html>.
 
 - Start a talk session with a user on the same machine:

pages/linux/vmware-checkvm.md

@@ -1,6 +1,6 @@
 # vmware-checkvm
 
-> Checks to see if the current host is a VMware VM or not.
+> Check if the current host is a VMware VM or not.
 > More information: <https://manned.org/vmware-checkvm>.
 
 - Return the current VMware software version (exit status determines whether the system is a VM or not):

pages/linux/zile.md

@@ -1,6 +1,6 @@
 # zile
 
-> Zile is a lightweight clone of the Emacs text editor.
+> A lightweight clone of the Emacs text editor.
 > More information: <https://www.gnu.org/software/zile/>.
 
 - Start a buffer for temporary notes, which won't be saved: