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Diffstat (limited to 'ult/ult_7/script.rst')
| -rw-r--r-- | ult/ult_7/script.rst | 69 |
1 files changed, 40 insertions, 29 deletions
diff --git a/ult/ult_7/script.rst b/ult/ult_7/script.rst index b4cb55c..eddd9e6 100644 --- a/ult/ult_7/script.rst +++ b/ult/ult_7/script.rst @@ -50,7 +50,7 @@ At the end of this tutorial, you will be able to, .. R3 Before beginning this tutorial,we would suggest you to complete the -former tutorials as being displayed currently. +previous tutorials as being displayed currently. .. R4 @@ -70,7 +70,7 @@ Let us see what data they contain. Open a terminal and type, .. R5 Let's say we wish to sort the output in the alphabetical order -of the names of the files. We can use the ``sort`` command for this +of the names of students. We can use the ``sort`` command for this purpose. We just pipe the previous output to the ``sort`` command as, @@ -259,47 +259,58 @@ original file and work with that file. .. L19 :: - sort items.txt | uniq + sort items.txt > items-sorted.txt .. R20 -``uniq -u`` command gives the lines which are unique and do not have any -duplicates in the file. ``uniq -d`` outputs only those lines which -have duplicates. +Now, the ``uniq`` command will work. Let's try it out + +.. L20 -.. L20 :: - uniq -u items-sorted.txt + uniq items-sorted.txt .. R21 +The same result can also be obtained by a more precise command. We include the +option ``-u`` which gives the lines which are unique and do not have any +duplicates in the file + +.. L21 +:: + + uniq -u items-sorted.txt + +.. R22 + +``uniq -d`` outputs only those lines which have duplicates. The ``-c`` option displays the number of times each line occurs in the file. -.. L21 +.. L22 :: uniq -dc items-sorted.txt -.. L22 +.. L23 {{{ Show summary slide }}} -.. R22 +.. R23 This brings us to the end of the end of this tutorial. In this tutorial, we have learnt to, - 1. Use the ``sort`` command to sort lines of text files. - #. Use the ``grep`` command to search text pattern. - #. Use the ``tr`` command to translate and/or delete characters. - #. Use the ``uniq`` command to omit repeated lines in a text. +1. Use the ``sort`` command to sort lines of text files. +#. Use the ``grep`` command to search text pattern. +#. Use the ``tr`` command to translate and/or delete characters. +#. Use the ``uniq`` command to omit repeated lines in a text. -.. L23 +.. L24 {{{ Show self assessment questions slide }}} -.. R23 +.. R24 Here are some self assessment questions for you to solve @@ -314,11 +325,11 @@ Here are some self assessment questions for you to solve 3. Sort the output of the ``ls -al`` command. -.. L24 +.. L25 {{{ Solution of self assessment questions on slide }}} -.. R24 +.. R25 And the answers, @@ -338,11 +349,11 @@ And the answers, The -n means "sort numerically", and the -k5 option means to key off of column five. -.. L25 +.. L26 {{{ Show the SDES & FOSSEE slide }}} -.. R25 +.. R26 Software Development techniques for Engineers and Scientists - SDES, is an initiative by FOSSEE. For more information, please visit the given link. @@ -351,43 +362,43 @@ Free and Open-source Software for Science and Engineering Education - FOSSEE, is based at IIT Bombay which is funded by MHRD as part of National Mission on Education through ICT. -.. L26 +.. L27 {{{ Show the ``About the Spoken Tutorial Project'' slide }}} -.. R26 +.. R27 Watch the video available at the following link. It summarises the Spoken Tutorial project.If you do not have good bandwidth, you can download and watch it. -.. L27 +.. L28 {{{ Show the `` Spoken Tutorial Workshops'' slide }}} -.. R27 +.. R28 The Spoken Tutorial Project Team conducts workshops using spoken tutorials, gives certificates to those who pass an online test. For more details, contact contact@spoken-tutorial.org -.. L28 +.. L29 {{{ Show the ``Acknowledgements'' slide }}} -.. R28 +.. R29 Spoken Tutorial Project is a part of the "Talk to a Teacher" project. It is supported by the National Mission on Education through ICT, MHRD, Government of India. More information on this mission is available at the given link. -.. L29 +.. L30 {{{ Show the Thank you slide }}} -.. R29 +.. R30 Hope you have enjoyed this tutorial and found it useful. Thank you! |