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if [ -n "$BASH_VERSION" -o -n "$KSH_VERSION" -o -n "$ZSH_VERSION" ]; then[ -x /usr/bin/id ] || returnID=`/usr/bin/id -u`[ -n "$ID" -a "$ID" -le 200 ] && return# for bash and zsh, only if no alias is already setalias vi >/dev/null 2>&1 || alias vi=vimfi