cut

cut/0_Cutting_Content/code

@@ -0,0 +1,11 @@
+
+echo "Cutting Contents of a file on the standard output (stdout)."
+echo "----------------------------------------------------------"
+
+cut -b1,3 $LLO_DATAFILE | head -5
+echo ""
+
+echo "Cutting Contents of a file on the standard output (stdout)."
+echo "-------------------with ranges---------------------------------------"
+
+cut -b1-5,10-15 $LLO_DATAFILE | head -5 

cut/0_Cutting_Content/codeanswer

@@ -0,0 +1 @@
+grep "Jordan" |  cut -b 8- $LLO_DATAFILE | head -5

cut/0_Cutting_Content/codehelp

@@ -0,0 +1,2 @@
+
+-b It uses a special form: selecting bytes upto the end of the line

cut/0_Cutting_Content/info

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+
+Cut parts of a line by *byte position*, *character* and *field*. 
+
+Cut command slices a line and extracts the text. It is necessary to specify option with command otherwise it gives error. 
+
+
+[source,bash]
+----
+cut OPTION [FILE]
+e.g.
+cut $LLO_DATAFILE | head -5
+----
+
+*-b(byte):* To extract the specific bytes, you need to follow -b option with the list of byte numbers separated by comma. 
+
+[source,bash]
+----
+cut -b 1,2,3 $LLO_DATAFILE | head -5 
+----
+
+
+[INFO]
+====
+
+DATAFILE
+
+The datafile  contains aggregate individual statistics for 67 NBA seasons. from basic box-score attributes such as points, assists, rebounds etc., to more advanced money-ball like features such as Value Over Replacement.
+
+Take a look in
+link:https://git.swarmlab.io:3000/llo/LabLearningObject/src/branch/master/data/nba_statistics_glossary[Glossary^]
+for a detailed column description
+
+ENVIRONMENT VARIABLE:  LLO_DATAFILE
+
+====
+

cut/0_Cutting_Content/q-info

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+
+Try to run 
+
+[source,sh]
+----
+cut -b 3- $LLO_DATAFILE | head -5
+----
+
+and see the Results!

cut/1_Advanced_Displays/code

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+
+echo 'Display tab characters as ^I'
+echo "-------------------------------"
+
+cat -T $LLO_DATAFILE | head -9
+echo ""
+
+echo "Display non printing characters"
+echo "-------------------------------"
+
+cat -v $LLO_DATAFILE | head -9
+echo ""
+
+echo "Suppress repeated empty lines"
+echo "-------------------------------"
+
+cat -s $LLO_DATAFILE | head -9
+echo ""
+
+echo "In case, you need to use the -v, -E and -T option together, you can just use the -A command line option."
+echo "-------------------------------"
+
+cat -A $LLO_DATAFILE | head -9
+echo ""
+

cut/1_Advanced_Displays/codeanswer

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+tmpfile=$(mktemp /tmp/test1.XXXXXX)
+cat -A $LLO_DATAFILE | head -5 > $tmpfile
+cat $tmpfile
+

cut/1_Advanced_Displays/codehelp

@@ -0,0 +1,8 @@
+Use *mktemp* to create a temporary file in _/tmp_
+
+run 
+
+[source,bash]
+----
+mktemp --help
+----

cut/1_Advanced_Displays/info

@@ -0,0 +1,62 @@
+The cat command also allows
+
+- Display tab characters as ^I 
+
+[source,bash]
+----
+display tab characters as ^I 
+----
+
+For example:
+
+[source,bash]
+----
+cat -T $LLO_DATAFILE | head -9
+----
+
+
+- Display non printing characters
+
+For example:
+
+[source,bash]
+----
+cat -v $LLO_DATAFILE | head -9
+----
+
+- Suppress repeated empty lines
+
+For example:
+
+[source,bash]
+----
+cat -s $LLO_DATAFILE | head -9
+----
+
+[INFO]
+====
+In case, you need to use the -v, -E and -T option together, you can just use the -A command line option.
+====
+
+For example:
+
+[source,bash]
+----
+cat -A $LLO_DATAFILE | head -9
+----
+
+[INFO]
+====
+
+DATAFILE
+
+The datafile  contains aggregate individual statistics for 67 NBA seasons. from basic box-score attributes such as points, assists, rebounds etc., to more advanced money-ball like features such as Value Over Replacement.
+
+Take a look in
+link:https://git.swarmlab.io:3000/llo/LabLearningObject/src/branch/master/data/nba_statistics_glossary[Glossary^]
+for a detailed column description
+
+ENVIRONMENT VARIABLE:  LLO_DATAFILE
+
+====
+

cut/1_Advanced_Displays/q-info

@@ -0,0 +1,8 @@
+
+Create a temporary file and put output with
+
+[source,sh]
+----
+cat -A $LLO_DATAFILE | head -5 > ...
+----
+

cut/intro

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+*cut* command is one of the most useful & important command used in Linux.
+
+It is used for cutting out the sections from each line of files and writing the result to standard output.
+
+
+In this *LO*, we will see the most used cat Commands examples in Linux. 

index_cut.yml

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+--- # Programming language
+  name: "cut"
+  base_url: "https://git.swarmlab.io:3000/llo/LabLearningObject/raw/branch/master"
+  author: "zeus"
+  intro: "intro"
+  0_Display_Content:
+    display_name: "Cutting_Content"
+    swarmlabservice: "os2"
+    info:
+      file: "0_Cutting_Content/info"
+    code:
+      lang: "bash"
+      exec: "/bin/bash"
+      file: "0_Cutting_Content/code"
+      data: "0_Cutting_Content/data"
+      options: ""
+      mimetype: "bash"
+      output:
+        log: "console"
+        mimetype: "bash"
+    challenge:
+      question: "0_Cutting_Content/q-info"
+      codehelp: "0_Cutting_Content/codehelp"
+      codeanswer: "0_Cutting_Content/codeanswer"
+      mimetype: "bash"
+      points: "" # ELO
+      output:
+        log: "bash"
+  1_Advanced_Displays:
+    display_name: "Advanced_Displays"
+    swarmlabservice: "os2"
+    info:
+      file: "1_Advanced_Displays/info"
+    code:
+      lang: "bash"
+      exec: "/bin/bash"
+      file: "1_Advanced_Displays/code"
+      data: "1_Advanced_Displays/data"
+      options: ""
+      mimetype: "bash"
+      output:
+        log: "console"
+        mimetype: "bash"
+    challenge:
+      question: "1_Advanced_Displays/q-info"
+      codehelp: "1_Advanced_Displays/codehelp"
+      codeanswer: "1_Advanced_Displays/codeanswer"
+      mimetype: "bash"
+      points: "" # ELO
+      output:
+        log: "bash"