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Question

Unexpected operator error

Answer 1

+3 A:

You need to use = instead of == in the [ $? == 0 ] line.

Chris Jester-Young 2010-01-06 05:45:34

Answer 2

+1 A:

Try:

if [[ $? == 0 ]]; then
    echo "==> Found \"$LOOK_FOR\" in $i"
fi

slebetman 2010-01-06 05:46:03

That's a bashism, and I know from the error message posted that the OP is not using bash. :-P

Chris Jester-Young 2010-01-06 05:47:28

Answer 3

+4 A:

You should change that to:

if [ $? -eq 0 ]; then
    ...

-eq does a numeric comparison.

You can also take advantage of the fact that in shell a return value of 0 is considered success and write your code like this:

if jar tvf "$i" | grep "$LOOK_FOR"; then
    ...

R Samuel Klatchko 2010-01-06 06:00:05

Well, numeric or string comparison doesn't really matter here.

ephemient 2010-01-06 06:10:00

Answer 4

+1 A:

#!/bin/sh
LOOK_FOR="$1"    
find $2 -name "*jar"`| while read -r file
  echo "Looking in $file ..."
  jar tvf "$file" | grep "$LOOK_FOR" 
  if [ $? -eq 0 ] ; then
    echo "==> Found \"$LOOK_FOR\" in $file"
  fi  
done

ghostdog74 2010-01-06 06:19:29

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