Final test: Bash: text processing and scripts

One correct answer

After sed -i.bak 's/30/60/' site-*.conf you see that you replaced the wrong thing. How do you get the original site-01.conf back?

• A sed 's/60/30/' site-01.conf
• B You cannot — sed -i edits the file for good.
• C mv site-01.conf.bak site-01.conf
• D Run the same sed command again.