UNIX for Dummies Questions & Answers

#!/bin/bash -x
NUM=`find . -name ufsdump_output1.txt | xargs egrep "End-of-tape detected"`
if [ "$NUM" = "" ]; then  echo "OK!"
elif [ "$NUM" = "End-of-tape detected" ]; then echo "NOT OK!"  exit 2
fi

while [ "$NUM" = "" ];
do echo "OK!"
else ......  ##what "elif" part corresponds to? in while-do loop?##

while [ "$NUM" = "" ];do
   echo "OK!"
done
if [ "$NUM" = "End-of-tape detected" ]; then
  echo "NOT OK!"
  exit 2
fi

while true
do
  case "$NUM" in
    "")
      echo "OK"
    ;;
    "End-of-tape detected")
      echo "KO"
      break 
    ;;
  esac
done

NUMA=`find . -name ufsdump_output1.txt | xargs egrep "End-of-tape detected"`
while true do
  case "$NUMA" in
    "")
      echo "OK"
    ;;
    "End-of-tape detected")
      echo "KO"
      break
    echo "FOR TEST"
    ;;
  esac
done

-rw-r--r--   1 root     root         373 Aug 31 11:50 ufsdump_output1.txt
-rw-r--r--   1 root     root         943 Aug 31 11:51 ufsdump_output2.txt
-rw-r--r--   1 root     root         373 Aug 31 11:52 ufsdump_output3.txt

while [ $NUMA ] do

#!/bin/bash

for n in {1..3}
 do
#   eval NUM$n=$(find . -name ufsdump_output${n}.txt | xargs egrep -c "End-of-tape detected")
   eval NUM$n=$(egrep -Rc "End-of-tape detected" .)
   case NUM$n
    in
      0) echo "TAPE HAS STILL SPACE FOR BACKUP"
         exit #or what you have to do
      ;;
      [1-9]|[1-9][0-9]*) echo "ATTENTION! EOT REACHED, CHANGE CARTRIDGE!"
                        exit 2
      ;;
   esac
done