Hi ,all:<br clear="all"><br>&nbsp;&nbsp; I get a problem, when I want to get sub-a process output from the buffer.<br><br>Here is the code, in my .emacs:<br><br>(defun startup (check-command wanted start-command)<br>&nbsp; &quot;check whether the &#39;wanted&#39; state satisfied, if not, launch the start-command&quot;
<br>&nbsp; (interactive)<br>&nbsp; (save-excursion<br>&nbsp;&nbsp;&nbsp; (let* ((d-buf (get-buffer-create &quot;diagnose&quot;))<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; (process-connection-type nil)<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; (process-status (eval `(call-process (car check-command) nil d-buf t ,@(cdr check-command)))))
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (print `(,(buffer-modified-p) ,(buffer-size) ,(point-min) ,(point) ,(point-max)) d-buf)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;;(debug)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (if (not (string-match wanted (buffer-string)))<br>&nbsp;&nbsp;&nbsp; &nbsp; (progn<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (print (concat &quot;starting command &quot; (stringlist-to-string start-command &quot; &quot;)) d-buf)
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (eval `(start-process &quot;start up&quot; d-buf (car start-command) ,@(cdr start-command)))<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; )<br>&nbsp;&nbsp;&nbsp; (print <br>&nbsp;&nbsp;&nbsp; &nbsp;(concat wanted &quot; matched! no need to start &quot; (stringlist-to-string start-command &quot; &quot;)) d-buf)
<br>&nbsp;&nbsp;&nbsp; ))))<br>&nbsp; <br>(setq system-start-up-list<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;(((&quot;sudo&quot; &quot;netstat&quot; &quot;-i&quot;) &quot;eth0&quot; (&quot;sudo&quot; &quot;ifup&quot; &quot;eth0&quot;)))<br>&nbsp;&nbsp;&nbsp; )<br><br>;;(debug-on-entry &#39;startup)
<br><br>(mapcar (lambda (ssup-item)<br>&nbsp;&nbsp;&nbsp; &nbsp; (let ((check-command (car ssup-item))<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (wanted (cadr ssup-item))<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (start-command (caddr ssup-item)))<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (startup check-command wanted start-command))
<br>&nbsp;&nbsp;&nbsp; &nbsp; ) system-start-up-list)<br><br>Something strange is that, I get the following in my diagnose buffer:<br><br>Kernel Interface table<br>Iface&nbsp;&nbsp; MTU Met&nbsp;&nbsp; RX-OK RX-ERR RX-DRP RX-OVR&nbsp;&nbsp;&nbsp; TX-OK TX-ERR TX-DRP TX-OVR Flg
<br>eth0&nbsp;&nbsp; 1500 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3959&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp; 1903&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 BMRU<br>lo&nbsp;&nbsp;&nbsp; 16436 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 122&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 122&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 LRU<br><br>(nil 0 1 1 1)<br><br>&quot;starting command sudo ifup eth0&quot;
<br>ifup: interface eth0 already configured<br><br>Process start up finished<br><br>It seems that , string <br>&quot;<br>Kernel Interface table<br>
Iface&nbsp;&nbsp; MTU Met&nbsp;&nbsp; RX-OK RX-ERR RX-DRP RX-OVR&nbsp;&nbsp;&nbsp; TX-OK TX-ERR TX-DRP TX-OVR Flg<br>
eth0&nbsp;&nbsp; 1500 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3959&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp; 1903&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 BMRU<br>
lo&nbsp;&nbsp;&nbsp; 16436 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 122&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 122&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 LRU<br>
&quot; could not be read by the (buffer-string) :(<br><br>How can I solve the problem? thanks<br><br>cheers<br><br><br>-- <br>YuGang