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Adding a text in the beginning of a line

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# 1  
Old 01-26-2014
Adding a text in the beginning of a line
Hi,

I am doing something like below:

Code:
cat file1>file3

and
Code:
cat file2>>file3

I wanted to check if there is a way to write a custom message(hardcoded message)something like below at the beginning of each line then PIPE delimitiation and then followed by remaining record.

Code:
cat file1 >Custom Message THIS IS FROM FILE1" then PIPE " |" then remaining records from file1 > file3
 
cat file2 > " Custom Message THIS IS FROM FILE2" then PIPE " |" then remaining records from file2 >> file3

So the final file "file3" has custom mesages and records from file 1 and file 2.

Thanks
Moderator's Comments:
Mod Comment Please use CODE tags (not font and color changes) to show sample code, sample input data, and sample output data.
Last edited by Saanvi1; 01-27-2014 at 11:46 AM.. Reason: Change BOLD tags to CODE tags.
# 2  
Old 01-27-2014
This seems to do what you want:
Code:
awk -v outfile=file3 '
FNR == 1 {
        prefix = " Custom Message THIS IS FROM " toupper(FILENAME) " |"
}
{       print prefix $0 > outfile
}' file1 file2

If you want to try this on a Solaris/SunOS system, use /usr/xpg4/bin/awk, /usr/xpg6/bin/awk, or nawk, instead of /usr/bin/awk.
# 3  
Old 01-27-2014
Thanks Don for pointing this out. I will follow the code tags for all my future post. I am on Sun Solaris. I will try out your suggestion above.

I am not an awk geek and doesn't understand awk that well, I wanted to check if there is a little simpler way of achieving the same thing that I mentioned in my post.

I would really appreciate and thanks in advance.

Thanks
# 4  
Old 01-27-2014
This can be done thousands of ways on any UNIX System. Finding something simpler than a two line awk program may be difficult. If you're unwilling to use /usr/xpg4/bin/awk, what tools are you willing to use?

If you'd like to learn more about awk, and you can't figure out how this program works by reading the awk(1) man page, I'll be happy to explain what it is doing for you.
Last edited by Don Cragun; 01-27-2014 at 03:51 PM..
These 2 Users Gave Thanks to Don Cragun For This Post:
Saanvi1 vgersh99
# 5  
Old 01-27-2014
Thanks Don.....Let me try out the AWK....As suggested by you, I will look into the MAN page as well.

Thank You so much for your reply and helping me out.

Thanks
# 6  
Old 01-27-2014
Maybe you are looking for something like this:
Code:
printf "%s |" "Custom Message THIS IS FROM FILE1" | cat - file1 > file3
printf "%s |" "Custom Message THIS IS FROM FILE2" | cat - file2 >> file3

# 7  
Old 01-27-2014
Quote:
Originally Posted by Scrutinizer
Maybe you are looking for something like this:
Code:
printf "%s |" "Custom Message THIS IS FROM FILE1" | cat - file1 > file3
printf "%s |" "Custom Message THIS IS FROM FILE2" | cat - file2 >> file3

This might be what Saanvi1 wants, but the original request was:
Quote:
I wanted to check if there is a way to write a custom message(hardcoded message)something like below at the beginning of each line then PIPE delimitiation and then followed by remaining record.
The code above puts the custom message at the beginning of each file rather than at the start of each line in the file.
This User Gave Thanks to Don Cragun For This Post:
Scrutinizer
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