<div dir="ltr"><div>Hi! <br></div><div>I have a shell script to start with where some variables (year, month,tstep,variable name) are defined and passed to a ncl script. Next, the ncl script performs further analysis (reading variables, analyzing). The dimensionality (2-d or 3-d or 4-d) of the variable is determined inside the ncl script, but I need this information back in the shell script. Is it possible to get it? Roughly, I tried this</div><div>----------------------</div><div><span style="font-family:monospace">myscript.ncl</span></div><div><span style="font-family:monospace">yr=toint(getenv("YEAR"))</span></div><div><span style="font-family:monospace">mn=toint(getenv("MON"))</span></div><div><span style="font-family:monospace">varin=getenv("VNAME")</span></div><div><span style="font-family:monospace">...</span></div><div><span style="font-family:monospace">finp=addfile("modelout_"+yr+"_"+mn+".bin","r")</span></div><div><span style="font-family:monospace">vinp=finp->varin<br></span></div><div><span style="font-family:monospace">...</span></div><div><span style="font-family:monospace">vdimin=dimsizes(varin)</span></div><div><span style="font-family:monospace"><br></span></div><div><span style="font-family:monospace"><b>system("export VDIMS="+vdimin)  ; is it the correct way?</b><br></span></div><div><span style="font-family:monospace">...<br></span></div><div><span style="font-family:monospace">----------------------</span></div><div><span style="font-family:monospace">run_ncl.sh<br></span></div><div><span style="font-family:monospace">#!/bin/sh</span></div><div><span style="font-family:monospace">export YEAR=2019</span></div><div><span style="font-family:monospace">export MON=8</span></div><div><span style="font-family:monospace">export TSTEP=6</span></div><div><span style="font-family:monospace">export VNAME="PREC"</span></div><div><span style="font-family:monospace"><br></span></div><div><span style="font-family:monospace">ncl myscript.ncl</span></div><div><span style="font-family:monospace"><br></span></div><div><span style="font-family:monospace"><b>echo $VDIMS    ; returning empty ???</b><br></span></div><div><span style="font-family:monospace">-----------------------------</span></div><div><br></div><div><br></div></div>