知乎专栏 |
ls -l $KDEDIR
<userinput><command>ls</command> <option>-l</option> <parameter>$<envar>KDEDIR<envar></parameter> </userinput>
export $KDEDIR=/usr/local/kde
<userinput> <command>export</command> <parameter>$<envar>KDEDIR</envar>=<filename> /usr/local/kde</filename></parameter></userinput>