Shell Programming and Scripting

Hi everybody,

I am trying to grep abcds in one folder and in all its subfolders!
but it does not work!

would you help please?

thanks.

The '-r' is not a valid option for the 'grep' command.

Try running without it.

Perhaps your grep and the OP's differ. -r is not a standard (posix) grep extension, but it is supported by GNU grep. So it should work on linux and freesbsd.

Even if the grep implementation supports -r, it's probably better practice to get in the habit of using -R instead. GNU grep supports -R as a synomym for -r and there are some grep implementations which do not support -r but do recurse with -R.

Also, a few standard utilities have deprecated -r in favor of -R (in posix, for consistency's sake, such as cp).

Regards,
Alister

Code:

string_search /docs abcds

#!/usr/bin/ksh

if [[ $# -ne 2 ]]
then
  echo usage: $0 starting_point string
  exit 1
fi

if [[ ! -d $1 ]]
then
  echo $0: starting_point must be a directory. eg: / or /home
  exit 1
fi

echo $0: Searching files under $1 on $(date)...
find $1 -type f -print 2>/dev/null | sort -u | while read FNAME
do
  #echo Checking $FNAME...
  if [[ $(grep -c "$2" "$FNAME" 2>/dev/null) -gt 0 ]]
  then
      echo "$2 found in: $FNAME  \c  "
      grep "$2" "$FNAME" 2>/dev/null
  fi
done

echo $0: Ended on $(date).

exit 0