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bash's ${!var} is doing almost the opposite of what ${!var} was doing in ksh93. In ksh93, to do indirection, you'd use namerefs (not ${!var} which is to prevent indirection when var is a nameref, try ksh93 -c 'a=value; nameref b=a; echo "$b" "${!b}"'). In zsh, it's ${(P)var}

Stéphane Chazelas
– Stéphane Chazelas

2020-07-22 22:04:54 +00:00
Commented Jul 22, 2020 at 22:04

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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
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quote by placing > at start of line
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