"grep i lisa daily.log" does not return the a count. It returns all ines in the file "daily.log" which contain the string "lisa" (case insensative).

If you are only interested if the string "lisa" does occur in the file you can use this command.

However you will have to check on the return code. If 0 the string "lisa" was found, if "1" the string was not found.

Furthermore, the "==" in the if condition is to compare strings, and not to check if a variable has a specific integer value. To check for integer values you use "-eq", "-ne", "-gt", "-ge", "-lt" or "-le".

Just to check if the srting occurs in the file you can use the following script.

Code:

#!/usr/bin/ksh

xTest = 'grep -i lisa daily.log'

if [ ${?} -ne 0 ] 
then
  echo "TEST" >> daily.log
fi

"${?}" is a reference to the return code of the command "grep".

Since you want to add the line "TEST" to the file if the string "lisa" did not occur in the file, it means the return code of grep has to be NON 0 (grep didn't find the string).

If you want to work with the number of times the string occurs you can use the following script.

Code:

#!/usr/bin/ksh

typeset -i xTest
xTest = 'grep -i lisa daily.log | wc -l'

if [ ${xTest} -eq 0 ] 
then
  echo "TEST" >> daily.log
fi

By adding the "| wc -l" the number of occurences is counted.