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nicerobot/gist:1484716

Created December 16, 2011 06:01
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Abbreviating PROMPT_COMMAND with ${HOME} to ~ replacement pure bash
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gistfile1.sh
#!/bin/bash
export PROMPT_COMMAND='PS1X=$(p="${PWD#${HOME}}"; [ "${PWD}" != "${p}" ] && printf "~";IFS=/; for q in ${p:1}; do printf /${q:0:1}; done; printf "${q:1}")'
export PS1='\j \u@\h:${PS1X} $ '
# http://unix.stackexchange.com/a/26860/6128
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