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Full Discussion: Bash script - coloring reg. expressions in text
Top Forums Shell Programming and Scripting Bash script - coloring reg. expressions in text Post 302723703 by gary_w on Tuesday 30th of October 2012 03:02:19 PM
Old 10-30-2012
Works on Solaris via PuTTY emulating a vt100 terminal:

Code:
$ cat x
#!/bin/bash

# Define terminal escape sequences.
GREEN="\033[1;32m"  # bold, green
NORM="\033[0m"

text="A cat is on a cat mat."  # Added a second "cat"
exp="cat"

# 1 slash matches the first occurance, 2 matches all occurances.
newtext=${text//$exp/$GREEN$exp$NORM}
echo -e "$newtext"

exit 0
$ ./x
A cat is on a cat mat.
$

Actually, this is closer to your original request:
Code:
#!/bin/bash

GREEN="\033[1;32m"
NORM="\033[0m"

text="A cat is on a cat mat."
exp="cat"
newexp="${GREEN}${exp}${NORM}"

newtext=${text//$exp/$newexp}
echo -e "$newtext"

exit 0

Last edited by gary_w; 10-30-2012 at 04:07 PM..
These 2 Users Gave Thanks to gary_w For This Post:
Habitual JohnnyM77
 

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LEARN ABOUT SUNOS

gnomevfs-cat

gnomevfs-cat(1) 						   User Commands						   gnomevfs-cat(1)

NAME

       gnomevfs-cat - print a file to standard output using the VFS system

SYNOPSIS

       gnomevfs-cat URI

DESCRIPTION

       gnomevfs-cat prints a file to standard output using the virtual file system to access the file via a URI.

OPERANDS

       The following operands are supported:

       URI	       Specifies the file location in standard URI format.

EXAMPLES

       Example 1: Cat a File From a Web Server

       example% gnomevfs-cat http://www.sun.com

       Example 2: Cat a Local File

       example% gnomevfs-cat file:///home/user/README.txt

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gnomevfs-cat   Executable to print a file to standard output using the VFS system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-vfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1), gnomevfs-mkdir(1)

NOTES

       Written by Stephen Browne, Sun Microsystems Inc., 2004.

SunOS 5.10							    6 Sep 2004							   gnomevfs-cat(1)
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