Please do all three will upvote

To search the manual for a string (like Command Substitution which appears somewhere in the bash manual), we use O a. Control G O b. Control F O c. Slash() followed by the string (or regular expression) we are searching for O d. Space To search for trailing spaces in files (trailing spaces are spaces just before the end of line) we do O a. grep' $' *. O b. awk '$' *.c . grep A' *. O d. awk ' A' *. O e. search trailing' '*.c Assume that we created a bash script file named blah.sh and try to execute it. We type blah.h at the terminal and we get a command not found error. What did we do wrong O a. We forgot to change permissions with chmod O b. We should have typed ./blah.sh O c. We typed too fast O d. We should have omitted the .sh and just typed blah