Tweak and/or add to apt-get

sheets/apt-get

@@ -1,17 +1,20 @@
-# Update the local database of available packages, as discovered from package index
-# file found in their sources. This does not actually update your installed
-# software! For that, keeping reading.
+# apt-get
+# Command-line interface to APT package management
+
+# Update the local database of available packages, as discovered from package
+# index file found in their sources. This does not actually update your
+# installed software! For that, keeping reading.
 apt-get update
 
-# Upgrade installed packages, but there may be exceptions, such as important kernel
-# packages. Also, packages will not be removed, like if they're deprecated, with
-# this method.
+# Upgrade installed packages, but there may be exceptions, such as important
+# kernel packages. Also, packages will not be removed, like if they're
+# deprecated, with this method.
 apt-get upgrade
 
-# Unlike the above, this will upgrade all of the installed packages, and perform
-# other actions required for a successful and thorough upgrade. This will also
-# allow for upgrading to the next minor release of your distributions, such as from
-# Ubuntu '16.04.1' to '16.04.2'.
+# Unlike the above, this will upgrade all of the installed packages, and
+# perform other actions required for a successful and thorough upgrade. This
+# will also allow for upgrading to the next minor release of your
+# distributions, such as from Ubuntu '16.04.1' to '16.04.2'.
 apt-get dist-upgrade
 
 # Clean out (completely) the follow locations of saved DEB files:
@@ -26,22 +29,23 @@ apt-get clean -s
 # View the changelog for the firefox package. Useful prior to or after upgrade.
 apt-get changelog firefox
 
-# Download PKG (one or more) without actually installing or extracting them. A good
-# use for this might be to upgrade an offline system, by downloading the packages
-# on a system using an Internet-able machine. Files are downloaded into the CWD.
+# Download PKG (one or more) without actually installing or extracting them. A
+# good use for this might be to upgrade an offline system, by downloading the
+# packages on a system using an Internet-able machine. Files are downloaded
+# into the CWD.
 apt-get download PKG
 
-# Install PKG (one or more), bringing in dependencies and, provided settings allow
-# it, install recommended and/or suggested packages.
+# Install PKG (one or more), bringing in dependencies and, provided settings
+# allow it, install recommended and/or suggested packages.
 apt-get install PKG
 
-# At times, dependencies won't be installed, yet you still need them; the following
-# command will often fix this, and is usually suggested to the user.
+# At times, dependencies won't be installed, yet you still need them; the
+# following command will often fix this, and is usually suggested to the user.
 apt-get -f install
 
 # Remove PKG, while also purging system-wide configuration files for it.
 apt-get purge PKG
-# Alternative syntax:
+# Alternative syntax to the above.
 apt-get remove --purge PKG
 
 # Often used to first update the local database of packages, then, only if
@@ -50,4 +54,5 @@ apt-get update && apt-get dist-upgrade
 
 # Download specified package (firefox, in this example) and all packages marked
 # thereby as important or dependencies. Files are downloaded into the CWD.
-apt-get download firefox `apt-cache --important depends firefox | awk '{if(NR>1){printf("%s ", $2)}}'`
+apt-get download firefox `apt-cache --important depends firefox |
+    awk '{if(NR>1){printf("%s ", $2)}}'`