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Rev

filename would be unset in the shell on the first line and you ought to get an error there when trying to redirect to nothing. Looping over the output of cat is ugly. You still have an empty pid variable defined for grep. I can't really see what this answer is trying to say.

Kusalananda
– Kusalananda ♦

2018-08-01 08:28:35 +00:00
Commented Aug 1, 2018 at 8:28
Why you don't read lines with "for"

glenn jackman
– glenn jackman

2018-08-01 16:13:44 +00:00
Commented Aug 1, 2018 at 16:13

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Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

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
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

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