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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
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.sh_historyfile contain? Do you need to runstringson it? You're also doingtail -1on it, so there's not much to loop over, if looping over the output of that function is what you mean. Can you edit the question to contain some example of the input file contents? And please take a peek at the editing help, the part about code block formatting.grep '^\string'looks for lines which begin with one whitespace character followed by the letterstring. This regexp will never matchsubstring AA. I cannot fully understand what is it that you are asking, but you seem to want to find the second field separated by whitespace, or the null string is no such field exists;sed -e 's/$/ /' | cut -d' ' -f2will do the trick. (Thesedappends a space character, thus making sure thatcutis satisfied.)