Write a Unix command using egrep that checks myfile.txt for this error, assuming that the error occurs inside a single line. Write a command using egrep that searches myfile.txt for all lines that contain the letter c and the letter k . Write a command using egrep that searches myfile.txt for all lines that contain at least two a 's or at least two b 's. Write a command using egrep that is piped the output from the ls -l command and displays all the directory names. Write a command using egrep that is piped the output from the ls -l command and displays all the files that have rw permission for the group.
Input is terminated by a single '.' on a line.
Many words in the dictionary file are lower case. However, abbreviations are in all caps and proper names start with a capital letter. The -c option ignores case. Reads the input from the file specified by filename rather than from standard input. When a word is not found in the dictionary, this option attempts to correct spelling errors and make suggestions as to what the intended word might be.