In the following sed command what is the g used for? sed 's/bob/jake/g'

• A. It means that if there are more instances of 'bob' on one line, more than the first will be replaced; normally only the first 'bob' on each line would be replaced.
• B. It disables global replacement
• C. It applies replacement to the next line only
• D. It makes the replacement case-insensitive

Answer: (A)

The g flag in a sed substitution enables global replacement. In the command sed 's/bob/jake/g', sed looks for every occurrence of bob on each input line and replaces all of them with jake. Without the g flag, only the first bob on each line would be replaced, leaving others unchanged. This flag operates per line, since sed processes input one line at a time. Other flags exist for different behaviors, but g specifically makes the substitution apply to all matches within a single line.