| $ echo "bla-bla" | grep "-bla"
|
| Usage: grep [OPTION]... PATTERNS [FILE]...
|
| Try 'grep --help' for more information.
|
|
|
| $ echo "bla-bla" | grep -- "-bla"
|
| bla-bla
|
| $ echo "bla-bla" | grep "-bla"
|
| Usage: grep [OPTION]... PATTERNS [FILE]...
|
| Try 'grep --help' for more information.
|
|
|
| $ echo "bla-bla" | grep -- "-bla"
|
| bla-bla
|