01-20-2020
This would be easy if you did not try to make these text processing tasks "one liners" and just write
the (few lines) code to process the file one line at a time, using any programming language you like.
Basically, if you just processed this text in a loop, reading each line at a time, matching flags and setting patterns, you could have easily processed this file. (Or read the file into an array of lines of text.)
The issue, as I see it, is you (not only you, but many) are falling into the "trap" of looking for "one liners" instead of just writing a small program of a few lines which does the trick.
You are not the only person who falls in to the trap of thinking that everything has to be a "one liner" but this will cause you to waste time when you could write a few lines of code in any programming language and most shell scripts to:
- Read the file into an array of lines.
- Process each line and search for your beginning <VirtualHost tag and set a flag.
- When the flag is set, search and match the other string(s) (SSLInsecureRenegotiation ... blah blah) and put the match(es) in an array.
- Stop processing after the end tag </VirtualHost is matched.
This is only a few lines of code and is very easy for you (or anyone with minimal programming skills) to write and you could have easily written this code in the time it takes to search for a "one liners" to do the job.
I'm not trying to give you a hard time and I like your posts; but I'm just saying. For a guy with nearly 1000 posts here; you should just write a handful of lines of code and process this versus wasting your time searching for the perfect "one-liner" REGEX.
Cheers.
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LEARN ABOUT LINUX
bsd-write
WRITE(1) BSD General Commands Manual WRITE(1)
NAME
write -- send a message to another user
SYNOPSIS
write user [tty]
DESCRIPTION
The write utility allows you to communicate with other users, by copying lines from your terminal to theirs.
When you run the write command, the user you are writing to gets a message of the form:
Message from yourname@yourhost on yourtty at hh:mm ...
Any further lines you enter will be copied to the specified user's terminal. If the other user wants to reply, they must run write as well.
When you are done, type an end-of-file or interrupt character. The other user will see the message 'EOF' indicating that the conversation is
over.
You can prevent people (other than the super-user) from writing to you with the mesg(1) command.
If the user you want to write to is logged in on more than one terminal, you can specify which terminal to write to by specifying the termi-
nal name as the second operand to the write command. Alternatively, you can let write select one of the terminals - it will pick the one
with the shortest idle time. This is so that if the user is logged in at work and also dialed up from home, the message will go to the right
place.
The traditional protocol for writing to someone is that the string '-o', either at the end of a line or on a line by itself, means that it is
the other person's turn to talk. The string 'oo' means that the person believes the conversation to be over.
SEE ALSO
mesg(1), talk(1), wall(1), who(1)
HISTORY
A write command appeared in Version 1 AT&T UNIX.
BUGS
The sender's LC_CTYPE setting is used to determine which characters are safe to write to a terminal, not the receiver's (which write has no
way of knowing).
The write utility does not recognize multibyte characters.
BSD
July 17, 2004 BSD