?
Solved

Use BASH script to parse between two points in a file and out to two files

Posted on 2008-06-18
3
Medium Priority
?
573 Views
Last Modified: 2013-12-26
Boss has an odd one for me today and for some reason I just can't get my head around such a simple request.

I have a requirement for a single file which contains the contents of two different config files put together and the script part at the start.  Basically an analyst would fill out all the params and then run the file.  The result would be two config files would be output from the script.  I've attached a sample below.

So the file would basically 'parse' itself into two seperate files (called whatever) between the two pointers.

So any questions?


#!/bin/bash
# $Revision: 1.1 $
# 
 
some code etc.. blah blah
 
### BEGIN Config 1 ###
config info line 1
config info line 2
config info line 3
config info line 4
config info line 5
config info line 6
### END Config 1 ###
 
 
### END Config 2 ###
config info line 1
config info line 2
config info line 3
config info line 4
config info line 5
config info line 6
### END Config 2 ###

Open in new window

0
Comment
Question by:london_mccourt
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 16

Accepted Solution

by:
Hanno P.S. earned 2000 total points
ID: 21814652
It would be pretty easy if you could use "here code":
#!/bin/bash
# $Revision: 1.1 $
# 
 
some code etc.. blah blah
 
### BEGIN Config 1 ###
cat << 'EOF' > /path/to/config1.file
config info line 1
config info line 2
config info line 3
config info line 4
config info line 5
config info line 6
EOF
### END Config 1 ###
 
 
### END Config 2 ###
cat << 'EOF' > /path/to/config2.file
config info line 1
config info line 2
config info line 3
config info line 4
config info line 5
config info line 6
EOF
### END Config 2 ###

Open in new window

0
 
LVL 14

Expert Comment

by:agriesser
ID: 21854183
What about something like this?
#!/bin/bash
 
LINENO=$(wc -l $0 | cut -d ' ' -f 1)
 
# small function to splitup parts of this configuration file
# parameters: $part (can be 1 to extract part 1 or 2 to extract part 2)
splitup()
{
  grep -B 0 -A $LINENO "^### BEGIN Config $1 ###" $0 | grep -A 0 -B $LINENO "^### END Config $1 ###" > part$1.conf
}
 
 
 
echo Hello world
echo "I'm going to split myself up now."
echo -n Splitting up part 1...
splitup 1
echo "done"
echo
echo -n "Splitting up part 2..."
splitup 2
echo "done"
echo
echo "I create two new files, part1.conf and part2.conf, have fun."
 
exit 0
 
### BEGIN Config 1 ###
config info line 1
config info line 2
config info line 3
config info line 4
config info line 5
config info line 6
### END Config 1 ###
 
### BEGIN Config 2 ###
config info line 1
config info line 2
config info line 3
config info line 4
config info line 5
config info line 6
### END Config 2 ###

Open in new window

0
 
LVL 14

Expert Comment

by:agriesser
ID: 21924138
*bump*
Already had time to try one of the suggestions?
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Why Shell Scripting? Shell scripting is a powerful method of accessing UNIX systems and it is very flexible. Shell scripts are required when we want to execute a sequence of commands in Unix flavored operating systems. “Shell” is the command line i…
In this post we will learn different types of Android Layout and some basics of an Android App.
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Suggested Courses
Course of the Month9 days, 13 hours left to enroll

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question