date command displays the current date and time information as well as we can set new date and time to system by supplying -s option. To display time: date +%T To display Minute: date +%M To display Month : date +%m%% a literal % %a locale's abbreviated weekday name (Sun..Sat) %A locale's full weekday name, variable length (Sunday..Saturday) %b locale's abbreviated month name (Jan..Dec) %B locale's full month name, variable length (January..December) %c locale's date and time (Sat Nov 04 12:02:33 EST 1989) %C century (year divided by 100 and truncated to an integer) [00-99] %d day of month (01..31) %D date (mm/dd/yy) %e day of month, blank padded ( 1..31) %F same as %Y-%m-%d %g the 2-digit year corresponding to the %V week number %G the 4-digit year corresponding to the %V week number %h same as %b %H hour (00..23) %I hour (01..12) %j day of year (001..366) %k hour ( 0..23) %l hour ( 1..12) %m month (01..12) %M minute (00..59) %n a newline %N nanoseconds
(000000000..999999999) %p locale's upper case AM or PM indicator (blank in many locales) %P locale's lower case am or pm indicator (blank in many locales) %r time, 12-hour (hh:mm:ss [AP]M) %R time, 24-hour (hh:mm) ond %t a horizontal tab %T time, 24-hour (hh:mm:ss) %U week number of year with Sunday as first day of week (00..53) %V week number of year with Monday as first day of week (01..53) %W week number of year with Monday as first day of week (00..53) %x locale's date representation (mm/dd/yy) %X locale's time representation (%H:%M:%S) %y last two digits of year (00..99) %Y year (1970...) %z RFC-2822 style numeric timezone (-0500) (a nonstandard exten- sion)
%Z time zone (e.g., EDT), or nothing if no time zone is deter- minable
Question 2
When should grep -F or the fgrep command be used to search the content of text files?
Options:
A.
When files need to be searched that contain non-ASCII text.
B.
When only the presence of the search pattern needs to be reported and not every line that matches the search.
C.
When the text being searched for does not contain any regular expression patterns.
D.
When the text files will be searched multiple times. Subsequent calls to fgrep will run faster.
Answer:
C
Question 3
You are writing text in vi. Now you want to save your changes and exit. Which TWO sequence of inputs will accomplish this?