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tutorial: Add section on the semicolon

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See #4116.
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Fabian Homborg 2017-06-11 13:45:52 +02:00
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@ -19,6 +19,7 @@
- <a href="#tut_exports">Shell Variables</a>
- <a href="#tut_lists">Lists</a>
- <a href="#tut_command_substitutions">Command Substitutions</a>
- <a href="#tut_semicolon">Separating Commands (Semicolon)</a>
- <a href="#tut_combiners">Combiners (And, Or, Not)</a>
- <a href="#tut_conditionals">Conditionals (If, Else, Switch)</a>
- <a href="#tut_functions">Functions</a>
@ -403,6 +404,20 @@ Unlike other shells, fish does not split command substitutions on any whitespace
\endfish
\section tut_semicolon Separating Commands (Semicolon)
Like other shells, fish allows multiple commands either on separate lines or the same line.
To write them on the same line, use the semicolon (";"). That means the following two examples are equivalent:
\fish
echo fish; echo chips
# or
echo fish
echo chips
\endfish
\section tut_combiners Combiners (And, Or, Not)
Unlike other shells, `fish` does not have special syntax like &amp;&amp; or || to combine commands. Instead it has commands `and`, `or`, and `not`.
@ -412,6 +427,14 @@ Unlike other shells, `fish` does not have special syntax like &amp;&amp; or || t
<outp>Backup failed</outp>
\endfish
As mentioned in <a href="#tut_semicolon">the section on the semicolon</a>, this can also be written in multiple lines, like so:
\fish
cp file1.txt file1_bak.txt
and echo "Backup successful"
or echo "Backup failed"
\endfish
\section tut_conditionals Conditionals (If, Else, Switch)