Created SC2041 (markdown)

koalaman
2015-04-23 14:20:55 -07:00
parent f4f0649507
commit 33b77567e3

25
SC2041.md Normal file

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## This is a literal string. To run as a command, use $(seq 1 10)
### Problematic code:
for i in 'seq 1 10'
do
echo "$i"
done
### Correct code:
for i in $(seq 1 10)
do
echo "$i"
done
### Rationale:
The intent was to run the code in the single quotes. This would have worked with slanted backticks, `` `..` ``, but here the very similar looking single quotes `'..'` were used, resulting in a string literal instead of command output.
This is one of the many problems with backticks, so it's better to use `$(..)` to expand commands.
### Exceptions:
None.