Well, I am perplexed. I am working with an Ubuntu server and I type in

grep 'bash' *.sh

BUT

fgrep 'bash' *.sh

works like a champ.

which grep

and

which fgrep

both point to their respective executables in /bin. I am perplexed as to what I am doing wrong.

EXAMPLE output:

$ grep -F 'grounding' repl.clj
Usage: grep [OPTION]... PATTERN [FILE]...
Search for PATTERN in each FILE or standard input.
PATTERN is, by default, a basic regular expression (BRE).
Example: grep -i 'hello world' menu.h main.c

$ fgrep 'grounding' repl.clj 
(p/concepts-for-grounding-term imp1  "PERSON" "summary")

See? grep is failing but fgrep is working fine. That is why I am perplexed.