Vlákno názorů k článku Hrátky z řádky: prompt, file, at a další od pht - prompt lze taky generovat pri kazdem vypsani dynamicky....

$ PS1='`if [[ $? -eq 0 ]]; then echo ":)"; else echo ":("; fi`'
:)
:)
:)
:)
:)qwrwerwerew
bash: qwrwerwerew: command not found
:(
:(

export PROMPT_COMMAND=bash_prompt_command
bash_prompt_command () 
{ 
    local LAST=$?;
    local LASTPS="";
    local USER_ID=`id -r -u`;
    local PS1_H="[\A]-[\w]";
    local PS1_D="[\u@\h]";
    [ $USER_ID -eq "0" ] && { 
        PS1_H="
        PS1_D="
    };
    if [ ${LAST} -eq 0 ]; then
        LASTPS="";
    else
        if [ ${PREV_LAST} -ne ${LAST} -o ${PREV_LAST_SHOWN} -ne ${HISTCMD} ]; then
            LASTPS="(${LAST})";
        else
            LASTPS="";
        fi;
    fi;
    PREV_LAST=${LAST};
    PREV_LAST_SHOWN=${HISTCMD};
    export PS1="$PS1_H\n$PS1_D${LASTPS}\$ "
}