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Author: ArnobKumarSaha

readme.md

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+## This repo contains some basics to advanced concepts of The Linux BASH. It also has some utility bash-scripts which can be used to make life easier.
+<br />
+
+# Conventions ::
+
+Lets first discuss about the conventions of writting bash-scripts.
+
+The very first line should be a shebang line (https://en.wikipedia.org/wiki/Shebang_(Unix)).
+
+## #!/bin/bash
+
+Followd by Auther Description, Data created , Date Modified , short description & usage. Like below :
+
+## #AUTHOR : Arnob kumar saha
+## #Date Created : 06-11-2021
+## #Last Modified : 10-12-2021
+
+## #DESCRIPTION : write a one-liner comment to express the overall functionality of this script.
+## #USAGE : How to use this script
+
+After these lines , All the variables that have been used in the script should be declared.
+
+## age=23
+## x=something
+
+Then the actuall script starts.
+
+# You should know ::
+
+1) Bash variables are untyped.
+There is nothing like integer, string or bool variables in bash. You can imagine them as a bunch of characters stored in memory, with no special meaning. but, depending on context, Bash permits arithmetic operations and comparisons on variables. The determining factor is whether the value of a variable contains only digits.
+
+2) It support arrays, which is a list of varibles.
+
+3) List of scpecial characters : 
+whitespaces like newLine, space, tab, carriagereturn etc.
+' " \ $ # = [ ] { } ( ) ! < > | ; &  ` * ? ~ 
+
+4) use the below syntax for multiline commenting in bash: <br />
+: ' <br />
+    first line <br />
+    second line <br />
+    .... <br />
+' <br />
+the space between the colon and singleQuote is important.
+
+5) To run script, you may have to give the execution permission, using command like , <br />
+chmod 744 filename
+
+<br>
+
+# Contents (in serial order) ::
+[basics](https://github.com/ArnobKumarSaha/bashscripting/tree/main/basics) <br>
+conditions <br>
+rules <br>
+loops <br>
+
+