linux - compare empty string cshell -


i facing problem compare empty string detected grep file. want detect empty file searched first if condition, file search empty, cannot go if ($vg == "") condition echo output , execute cp condition.

code use find file:

set lvg =`find ${lward}/netlists/verilog/ -name "${subblock}.v"`

below code:

foreach vg (${lvg})  if ($vg == "")    echo "${subblock}.vg file not found"  else if (${vg} =~ "*/${subblock}.vg")    cp -r "$vg" ./primetime/design/verilog/${subblock}.v  endif  end


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