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jesstess/cycle_bash_color

Created November 25, 2010 03:11
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cycle through colors with each new shell prompt
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cycle_bash_color
export colorvar=31; export PROMPT_COMMAND='export PS1="\e[""$colorvar"";40m\w> "; colorvar=$(((colorvar + 1) % 7 + 31));'
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andersk educates me, as usual:

export PROMPT_COMMAND='export PS1="[\e[$(($LINENO % 7 + 31))m]\w> "'

"The [ ~ ] tells bash where the non-printing escape sequence is so that it can correctly calculate the width of the prompt, to avoid display bugs when you type a command longer than the terminal width."

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