zeus
4 years ago
14 changed files with 49607 additions and 0 deletions
@ -0,0 +1,11 @@ |
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echo "Cutting Contents of a file on the standard output (stdout)." |
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echo "----------------------------------------------------------" |
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cut -b1,3 $LLO_DATAFILE | head -5 |
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echo "" |
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echo "Cutting Contents of a file on the standard output (stdout)." |
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echo "-------------------with ranges---------------------------------------" |
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cut -b1-5,10-15 $LLO_DATAFILE | head -5 |
@ -0,0 +1 @@ |
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grep "Jordan" | cut -b 8- $LLO_DATAFILE | head -5 |
@ -0,0 +1,2 @@ |
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-b It uses a special form: selecting bytes upto the end of the line |
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Cut parts of a line by *byte position*, *character* and *field*. |
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Cut command slices a line and extracts the text. It is necessary to specify option with command otherwise it gives error. |
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[source,bash] |
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---- |
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cut OPTION [FILE] |
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e.g. |
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cut $LLO_DATAFILE | head -5 |
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---- |
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*-b(byte):* To extract the specific bytes, you need to follow -b option with the list of byte numbers separated by comma. |
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[source,bash] |
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---- |
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cut -b 1,2,3 $LLO_DATAFILE | head -5 |
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---- |
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[INFO] |
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==== |
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DATAFILE |
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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. |
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Take a look in |
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link:https://git.swarmlab.io:3000/llo/LabLearningObject/src/branch/master/data/nba_statistics_glossary[Glossary^] |
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for a detailed column description |
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ENVIRONMENT VARIABLE: LLO_DATAFILE |
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==== |
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@ -0,0 +1,9 @@ |
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Try to run |
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[source,sh] |
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---- |
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cut -b 3- $LLO_DATAFILE | head -5 |
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---- |
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and see the Results! |
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echo 'Display tab characters as ^I' |
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echo "-------------------------------" |
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cat -T $LLO_DATAFILE | head -9 |
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echo "" |
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echo "Display non printing characters" |
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echo "-------------------------------" |
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cat -v $LLO_DATAFILE | head -9 |
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echo "" |
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echo "Suppress repeated empty lines" |
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echo "-------------------------------" |
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cat -s $LLO_DATAFILE | head -9 |
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echo "" |
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echo "In case, you need to use the -v, -E and -T option together, you can just use the -A command line option." |
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echo "-------------------------------" |
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cat -A $LLO_DATAFILE | head -9 |
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echo "" |
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@ -0,0 +1,4 @@ |
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tmpfile=$(mktemp /tmp/test1.XXXXXX) |
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cat -A $LLO_DATAFILE | head -5 > $tmpfile |
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cat $tmpfile |
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@ -0,0 +1,8 @@ |
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Use *mktemp* to create a temporary file in _/tmp_ |
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run |
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[source,bash] |
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---- |
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mktemp --help |
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---- |
File diff suppressed because it is too large
@ -0,0 +1,62 @@ |
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The cat command also allows |
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- Display tab characters as ^I |
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[source,bash] |
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---- |
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display tab characters as ^I |
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---- |
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For example: |
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[source,bash] |
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---- |
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cat -T $LLO_DATAFILE | head -9 |
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---- |
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- Display non printing characters |
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For example: |
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[source,bash] |
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---- |
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cat -v $LLO_DATAFILE | head -9 |
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---- |
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- Suppress repeated empty lines |
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For example: |
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[source,bash] |
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---- |
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cat -s $LLO_DATAFILE | head -9 |
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---- |
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[INFO] |
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==== |
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In case, you need to use the -v, -E and -T option together, you can just use the -A command line option. |
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==== |
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For example: |
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[source,bash] |
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---- |
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cat -A $LLO_DATAFILE | head -9 |
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---- |
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[INFO] |
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==== |
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DATAFILE |
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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. |
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|
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Take a look in |
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link:https://git.swarmlab.io:3000/llo/LabLearningObject/src/branch/master/data/nba_statistics_glossary[Glossary^] |
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for a detailed column description |
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|
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ENVIRONMENT VARIABLE: LLO_DATAFILE |
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|
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==== |
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@ -0,0 +1,8 @@ |
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Create a temporary file and put output with |
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[source,sh] |
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---- |
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cat -A $LLO_DATAFILE | head -5 > ... |
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---- |
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@ -0,0 +1,6 @@ |
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*cut* command is one of the most useful & important command used in Linux. |
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It is used for cutting out the sections from each line of files and writing the result to standard output. |
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In this *LO*, we will see the most used cat Commands examples in Linux. |
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--- # Programming language |
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name: "cut" |
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base_url: "https://git.swarmlab.io:3000/llo/LabLearningObject/raw/branch/master" |
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author: "zeus" |
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intro: "intro" |
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0_Display_Content: |
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display_name: "Cutting_Content" |
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swarmlabservice: "os2" |
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info: |
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file: "0_Cutting_Content/info" |
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code: |
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lang: "bash" |
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exec: "/bin/bash" |
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file: "0_Cutting_Content/code" |
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data: "0_Cutting_Content/data" |
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options: "" |
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mimetype: "bash" |
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output: |
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log: "console" |
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mimetype: "bash" |
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challenge: |
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question: "0_Cutting_Content/q-info" |
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codehelp: "0_Cutting_Content/codehelp" |
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codeanswer: "0_Cutting_Content/codeanswer" |
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mimetype: "bash" |
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points: "" # ELO |
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output: |
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log: "bash" |
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1_Advanced_Displays: |
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display_name: "Advanced_Displays" |
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swarmlabservice: "os2" |
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info: |
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file: "1_Advanced_Displays/info" |
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code: |
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lang: "bash" |
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exec: "/bin/bash" |
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file: "1_Advanced_Displays/code" |
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data: "1_Advanced_Displays/data" |
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options: "" |
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mimetype: "bash" |
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output: |
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log: "console" |
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mimetype: "bash" |
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challenge: |
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question: "1_Advanced_Displays/q-info" |
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codehelp: "1_Advanced_Displays/codehelp" |
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codeanswer: "1_Advanced_Displays/codeanswer" |
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mimetype: "bash" |
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points: "" # ELO |
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output: |
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log: "bash" |
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