EmbLogic » environmental variables https://www.emblogic.com/blog Embedded System and ARM Training Tue, 03 Mar 2020 13:00:06 +0000 en-US hourly 1 http://wordpress.org/?v=3.9.1 Command line Prompt – PS1, PS2 https://www.emblogic.com/blog/02/command-line-prompt-ps1-ps2/ https://www.emblogic.com/blog/02/command-line-prompt-ps1-ps2/#comments Sun, 07 Feb 2016 15:44:42 +0000 http://www.emblogic.com/blog/?p=13236 Continue reading →]]> Command line Prompt
===================
Environmental variables that controls Command line Prompt
PS1 : Controls the format of default command line prompt.
PS2 : Controls the format of second-tier command line prompt.
PS3 : Controls the format of tertiary command line prompt.

- Shell uses default PS1 prompt for initial data entry into shell.
- If we enter a command that requires additional information, shell displays second-tier prompt specified by PS2 .
- To display current settings for prompt use command :
echo $PS1
echo $PS2
- PS3 is used only in shell scripts.

]]> https://www.emblogic.com/blog/02/command-line-prompt-ps1-ps2/feed/ 0