[ns] ns's run problem

[=?gb2312?B?wO7D9A==?= <ydslm@163.net>]

hi:

  I installed ns-allinone-2.1b6 on the directory "/home/ns/ns-allinone-2.1b6". but when I typed "ns example.tcl"to run the ns,I was told :"couldn't open out.tr:readonly file system while executing "open out.tr w"".(example.tcl was in current directory and I already put "/home/ns/ns-allinone-2.1b6/bin" to my PATH environment variable.) My computer was pII333Mhz,128M,RedHat6.1,kerner:2.2.12-20. What will I do ? HELP ME ! Email me to

    ydslm@163.net

   thanks a lot!