From 51dc23db6ece60de03f8d2ff25332baff5aa86bc Mon Sep 17 00:00:00 2001
From: Chris Koeritz <fred@gruntose.com>
Date: Fri, 3 Feb 2017 07:45:32 -0500
Subject: [PATCH] new examples

plus a new function for showing md file content, and new scripts for showing network interface info and for showing packages that were manually installed.
---
 examples/bashisms/script_location.sh       |  3 +++
 examples/building/vs_var.bat               |  2 ++
 examples/graphics/pdf_picture_extractor.sh |  9 +++++++++
 examples/os_related/block_ip_address.sh    |  1 +
 scripts/core/functions.sh                  | 11 +++++++++++
 scripts/networking/interface_info.sh       |  4 ++++
 scripts/system/show_manually_installed.sh  |  5 +++++
 7 files changed, 35 insertions(+)
 create mode 100644 examples/building/vs_var.bat
 create mode 100644 examples/graphics/pdf_picture_extractor.sh
 create mode 100644 examples/os_related/block_ip_address.sh
 create mode 100644 scripts/networking/interface_info.sh
 create mode 100644 scripts/system/show_manually_installed.sh

diff --git a/examples/bashisms/script_location.sh b/examples/bashisms/script_location.sh
index a01dc95a..7fa942a6 100644
--- a/examples/bashisms/script_location.sh
+++ b/examples/bashisms/script_location.sh
@@ -5,3 +5,6 @@
 # personal aliases or functions disrupting the results.
 ORIGINATING_FOLDER="$( \cd "$(\dirname "$0")" && /bin/pwd )"
 
+# another slightly tighter version:
+export WORKDIR="$( \cd "$(\dirname "$0")" && \pwd )"  # obtain the script's working directory.
+
diff --git a/examples/building/vs_var.bat b/examples/building/vs_var.bat
new file mode 100644
index 00000000..de9ecc14
--- /dev/null
+++ b/examples/building/vs_var.bat
@@ -0,0 +1,2 @@
+
+"c:/Program Files (x86)/Microsoft Visual Studio 10.0/Common7/Tools/vsvars32.bat"
diff --git a/examples/graphics/pdf_picture_extractor.sh b/examples/graphics/pdf_picture_extractor.sh
new file mode 100644
index 00000000..bb46a0df
--- /dev/null
+++ b/examples/graphics/pdf_picture_extractor.sh
@@ -0,0 +1,9 @@
+var=0 
+for i in *; do
+  var=$(($var + 1))
+  mkdir -p ~/pictures_converted/$var/ 
+  pdfimages -j $i ~/pictures_converted/$var/ 
+  mv ~/pictures_converted/$var/* ~/pictures_converted/$(basename $i .pdf).jpg 
+done 
+
+
diff --git a/examples/os_related/block_ip_address.sh b/examples/os_related/block_ip_address.sh
new file mode 100644
index 00000000..68919bee
--- /dev/null
+++ b/examples/os_related/block_ip_address.sh
@@ -0,0 +1 @@
+sudo ufw deny from ${ip_address} to any
diff --git a/scripts/core/functions.sh b/scripts/core/functions.sh
index e2fbc519..86d89991 100644
--- a/scripts/core/functions.sh
+++ b/scripts/core/functions.sh
@@ -653,6 +653,17 @@ return 0
 
   ##############
 
+#hmmm: this points to an extended functions file being needed; not all of these are core.
+
+  # displays documentation in "md" formatted files.
+  function show_md()
+  {
+    local file="$1"; shift
+    pandoc "$file" | lynx -stdin
+  }
+
+  ##############
+
   # just shows a separator line for an 80 column console, or uses the first
   # parameter as the number of columns to expect.
   function separator()
diff --git a/scripts/networking/interface_info.sh b/scripts/networking/interface_info.sh
new file mode 100644
index 00000000..78f1f59f
--- /dev/null
+++ b/scripts/networking/interface_info.sh
@@ -0,0 +1,4 @@
+
+ifc="$1"; shift
+
+nmcli device show "$ifc"
diff --git a/scripts/system/show_manually_installed.sh b/scripts/system/show_manually_installed.sh
new file mode 100644
index 00000000..0db2cdda
--- /dev/null
+++ b/scripts/system/show_manually_installed.sh
@@ -0,0 +1,5 @@
+
+
+#gotten from http://askubuntu.com/questions/2389/generating-list-of-manually-installed-packages-and-querying-individual-packages
+
+comm -23 <(apt-mark showmanual | sort -u) <(gzip -dc /var/log/installer/initial-status.gz | sed -n s/^Package: //p | sort -u) 
-- 
2.34.1