topic Re: script with colors in Operating System - Linux

script with colors

Caesar_3 — Fri, 06 Jun 2003 18:56:59 GMT

Hello

How can i write with color in perl or some shell in linux (RH 7.2 or high).
Which command or modules can help?

Thk
Caesar

Re: script with colors

Jerome Henry — Fri, 06 Jun 2003 19:28:09 GMT

I would use vim for just editing purpose (quite a bit of learning to use, though, but you'll get trhough in 20 mn typing 'vimtutor'),
and for debugging... emacs.
hth
J

Re: script with colors

Caesar_3 — Fri, 06 Jun 2003 19:50:02 GMT

I mean that i want to write a script on perl or shell that will write text with color!

Re: script with colors

Jerome Henry — Fri, 06 Jun 2003 20:33:41 GMT

Oops,
sorry Caesar for misunderstanding. What you need is the curses and ncurses function in your script.
man these functions or look at this howto about ncurses, the new curses. Notice that it exists both for shell & perl :
http://www.linux.org/docs/ldp/howto/NCURSES-Programming-HOWTO/
hth
J

Re: script with colors

Francisco J. Soler — Mon, 16 Jun 2003 19:50:03 GMT

Hi, Caesar

I've found this. Try it, i think is what you want.

You can found more information at:
http://www.freeos.com/guides/lsst/

Cheers Frank.

#!/bin/bash
#
# Linux Shell Scripting Tutorial 1.05r3, Summer-2002
#
# Written by Vivek G. Gite
#
# Latest version can be found at http://www.nixcraft.com/
#
# Q16
# echo command with escape sequance to give differnt effects
#
# Syntax: echo -e "escape-code your message, var1, var2 etc"
# For eg. echo -e "\033[1m Hello World"
# | |
# | |
# Escape code Message
#

clear
echo -e "\033[1m Hello World"
# bold effect
echo -e "\033[5m Blink"
# blink effect
echo -e "\033[0m Hello World"
# back to noraml

echo -e "\033[31m Hello World"
# Red color
echo -e "\033[32m Hello World"
# Green color
echo -e "\033[33m Hello World"
# See remaing on screen
echo -e "\033[34m Hello World"
echo -e "\033[35m Hello World"
echo -e "\033[36m Hello World"

echo -e -n "\033[0m "
# back to noraml

echo -e "\033[41m Hello World"
echo -e "\033[42m Hello World"
echo -e "\033[43m Hello World"
echo -e "\033[44m Hello World"
echo -e "\033[45m Hello World"
echo -e "\033[46m Hello World"

echo -e "\033[0m Hello World"
# back to noraml

Re: script with colors

Stuart Browne — Mon, 16 Jun 2003 23:39:14 GMT

Go Francisco! :)

Caeser, welcome to the wonderful world of ANSI Escape sequences!

It's truely quite remarkable what you can do with these silly things (I remember re-mapping CTRL-C using ANSI.SYS on old DOS 5 systems!), but it all goes down to terminal emulation requirements.

If you are using a VT220 terminal, or emulation, you'll have issues with using ANSI color sequences.

But as you'll most probably be using some emulator that does ANSI anyway (as it's extremely widely used, and a number of other emulation types use a subset of it's sequences), you shouldn't have too many issues.

Strangely enough, if you look in the "Bash-Prompt-HOWTO" (section 6 - http://www.ibiblio.org/mdw/HOWTO/Bash-Prompt-HOWTO/), you'll find quite a few details on what you can do with your shell.

Have fun.. ;)