me@ant(25)$ env | grep -F "-g" grep: invalid option -- 'g' Usage: grep [OPTION]... PATTERN [FILE]... Try 'grep --help' for more information. me@ant(26)$ env | grep -F '-g' grep: invalid option -- 'g' Usage: grep [OPTION]... PATTERN [FILE]... Try 'grep --help' for more information. me@ant(27)$ env | grep -F 'CFL' CFLAGS=-g me@ant(28)$ env | grep '\-g' CFLAGS=-g me@ant(29)$ env | grep '-g' grep: invalid option -- 'g' Usage: grep [OPTION]... PATTERN [FILE]... Try 'grep --help' for more information. me@ant(30)$ env | grep "-g" grep: invalid option -- 'g' Usage: grep [OPTION]... PATTERN [FILE]... Try 'grep --help' for more information.
songbird