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PS1="\$(\
EXIT=\"\$?\" ; \
RED=\"\[\e[31m\]\" ; \
WHITE=\"\[\e[0m\]\" ; "
PS1+="\
endchar=\"\\$\${WHITE}\" ; \
if [ \"\$EXIT\" -eq 0 ]; then \
endchar=\"\${WHITE}\$endchar\" ; \
else \
endchar=\"\${RED}[\$(errno \${EXIT})] \$endchar\";\