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View a file and count all words beginning with specificletter

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Old 03-30-2019
It helps to know what operating system and shell you're using since the utilities on various operating systems have options that might help with what you are trying to do that are not available on other operating systems. Whenever you start a new thread here, please always tell us what shell and operating system you're using.

We need a much clearer definition of what you consider to be a word starting with "s" or "S". Is a word just alphabetic characters? Can hyphens be included in a word (e.g., sub-sonic)? Can numeric characters be included in a word (e.g., "straight-6")? Can apostrophes be included in a word (e.g., "she's")? When apostrophes can be included in words, how are we to distinguish between a phrase surrounded by single-quotes and a word containing a hyphen? (Note that regular expressions in grep can only look at a single line and quoted strings can cross many line boundaries.)

And, if we can't see a sample of the data you're working with and the output you expect to get from it, we have no way to verify that anything we might suggest might work for you. Please give us a representative sample input and the corresponding exact output you hope to produce from that input.
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LEARN ABOUT NETBSD

skeyinit

SKEYINIT(1)						    BSD General Commands Manual 					       SKEYINIT(1)

NAME

     skeyinit -- change password or add user to S/Key authentication system

SYNOPSIS

     skeyinit [-sxz] [-k passphrase] [-n count] [-p password] [-t hash] [user]

DESCRIPTION

     skeyinit initializes the system so you can use S/Key one-time passwords to login.	The program will ask you to enter a secret pass phrase;
     enter a phrase of several words in response.  After the S/Key database has been updated you can login using either your regular password or
     using S/Key one-time passwords.

     skeyinit requires you to type a secret password, so it should be used only on a secure terminal.

OPTIONS

     -k passphrase
	     Use pass phrase passphrase instead of asking for one to be entered.

     -n count
	     Start the skey(1) sequence at count (default is 100).

     -p password
	     Use password password instead of asking for one to be entered.

     -s      allows the user to set the seed and count for complete control of the parameters.	To do this run skeyinit in one window and put in
	     your count and seed; then run skey(1) in another window to generate the correct 6 english words for that count and seed.  You can
	     then ``cut-and-paste'' or type the words into the skeyinit window.

     -t hash
	     Selects the hash algorithm to use.  Available choices are md4 (the default), md5, or sha1.

     -x      Displays one-time password in hexadecimal instead of ASCII.

     -z      Allows the user to zero their S/Key entry.

     user    The username to be changed/added.	By default the current user is operated on, only root may change other user's entries.

FILES

     /etc/skeykeys  database of information for the S/Key system.

SEE ALSO

     skey(1), skeyaudit(1), skeyinfo(1)

AUTHORS

     Phil Karn
     Neil M. Haller
     John S. Walden
     Scott Chasin

BSD
								September 19, 2005							       BSD