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Diffstat (limited to 'bash.html.markdown')
| -rw-r--r-- | bash.html.markdown | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/bash.html.markdown b/bash.html.markdown index ea0a28da..1ddacc33 100644 --- a/bash.html.markdown +++ b/bash.html.markdown @@ -18,7 +18,7 @@ Nearly all examples below can be a part of a shell script or executed directly i # As you already figured, comments start with #. Shebang is also a comment. # Simple hello world example: -echo 'Hello, world!' +echo Hello, world! # Each command starts on a new line, or after semicolon: echo 'This is the first line'; echo 'This is the second line' @@ -32,6 +32,12 @@ VARIABLE = "Some string" # Bash will decide that VARIABLE is a command he must e # Using the variable: echo $VARIABLE echo "$VARIABLE" +# When you use the variable itself — assign it, export it, or else — you write it's name without $. If you want to use variable's value, you should use $. + +# Reading a value from input: +echo "What's your name?" +read NAME # Note that we didn't need to declare new variable +echo Hello, $NAME! # We have the usual if structure: if true @@ -41,4 +47,7 @@ else echo "And is was not" fi +# Expressions are denoted with the following format: +echo $(( 10 + 5 )) + ```
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