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As the title, is there any way to use color texts at expect shell? Like the shell script echo command below.
echo -e "\033[32m Hello World"
815
A script can use escape sequences to produce colored text on the terminal. Colors for text are represented by color codes, including, reset = 0, black = 30, red = 31, green = 32, yellow = 33, blue = 34, magenta = 35, cyan = 36, and white = 37.
The escape sequence for specifying color codes is \e[COLORm (COLOR represents our color code in this case). By default, echo does not support escape sequences. We need to add the -e option to enable their interpretation. The \e[0m means we use the special code 0 to reset text color back to normal.
For example, if you wanted to print green text, you could do the following: #!/bin/bash # Set the color variable green='\033[0;32m' # Clear the color after that clear='\033[0m' printf "The script was executed ${green}successfully${clear}!"
I have been suffering the answer to this question for quite some time, and now I think I've finally got an answer.
How it works is to use 033 to send the < ESC> character and then [ to send ANSI escape codes separated by semicolons, however as [ is a special character it also needs to be escaped with a backslash. You can then proceed to send ANSI sequences and delimit with an m.
Example ANSI break sequences
0 Reset / Normal all attributes off
1 Bold or increased intensity
4 Underline: Single
30 Set text color Black
31 Set text color Red
32 Set text color Green
Full list can be found here: http://en.wikipedia.org/wiki/ANSI_escape_code
Example:
puts "\033\[01;31m" # This will turn text red
puts "~~~This text is red and bold\n"
puts "\033\[0;32m" # This will turn text green
puts "This text is green and bold switched off\n"
However it doesn't seem to work with the -nonewline option, which is a tad annoying. However the send_user command seems to handle things a lot better and under control a lot better:
send_user "\033\[01;31mRed bold \033\[0;32mGreen again"
You can even combine this with variables to make the output more readable:
set green "\033\[0;32;40m"
set red "\033\[1;31m"
send_user "${red}Red bold ${green}Green again"
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