title: linux issue setenv command not found
body: <p>I develop a Tcl/Tk script tool in Linux. In order to run the tool, every time I need to set the environment variable like this in shell:</p>
  
  <pre><code>setenv LD_LIBRARY_PATH /opt/lsf/9.1/linux2.6-glibc2.3-x86_64/lib:/abc/software/new_2015/GE/tcl_tk/lib64:/abc/software/new_2015/GE/tcl_tk/lib64
  </code></pre>
  
  <p>and then use "wish" interpreter to launch my tool:</p>
  
  <pre><code>/abc/software/new2015/GE/tcl_tk/bin/wish mytool.tk
  </code></pre>
  
  <p>To make it a little easy to use, I want design a shell script "abc_wish" and put the above command inside:</p>
  
  <pre><code>#!/bin/sh
  setenv LD_LIBRARY_PATH /opt/lsf/9.1/linux2.6-glibc2.3-x86_64/lib:/abc/software/new_2015/GE/tcl_tk/lib64:/abc/software/new_2015/GE/tcl_tk/lib64
  wish="/abc/software/new2015/GE/tcl_tk/bin/wish"
  exec $wish $@
  </code></pre>
  
  <p>And then I need just run: </p>
  
  <pre><code>./abc_wish mytool.tk
  </code></pre>
  
  <p>But error message shows that setenv command not found!I am totally new to such system issues, need some help about these stuffs. Hope I have shown the issue clearly. </p>