LINUX Shell Script Guide Learn (1)--shell escape character in Echo

0.echo Command entry: (Default bash support, CSH not supported)

-N does not output line breaks
-E Open backslash ESC escape
-e Suppress backslash ESC escape (default)

Both 1.echo and printf can print output information, except that Echo adds a newline character (\ n) by default;

Echo-n "XXXX" can also cancel line break

2.echo can open the escape character through-E, such as the output Color command;

#!/bin/bash

# first define some colors: 1 is the highlight

Red= ' \e[0;31m ' # red

Red= ' \e[1;31m '

Green= ' \e[0;32m ' # Green

Green= ' \e[1;32m '

yellow= ' \e[0;33m ' # Yellow

yellow= ' \e[1;33m '

Blue= ' \e[0;34m ' # Blue

Blue= ' \e[1;34m '

Purple= ' \e[0;35m ' # purple

Purple= ' \e[1;35m '

Cyan= ' \e[0;36m ' # blue-Green

Cyan= ' \e[1;36m '

White= ' \e[1;37m ' # White

Nc= ' \e[0m ' # no Color

Echo-e "${cyan}this is BASH ${red}${bash_version%.*}${cyan}-DISPLAY on ${red} $DISPLAY ${nc}\n"

Echo-e "${red}red ${blue}blue ${cyan}cyan ${green}green${nc}"

ref:1.http://nigelzeng.iteye.com/blog/1456678

2.http://hi.baidu.com/lonelycorn/item/c7472d4bc25127ea1e19bc96