Shell Programming and Scripting

Hi ,

I need to write a korn shell to read a file, say Test.txt, and search the file for key words like "email", "name", etc line by line. Whatever is found on a line, send it to an output file. Do this until the end of the file. I have the following code below, that I'm trying to tweak but it doesn't work. Could you please let me know what is wrong:

++++++++++Script Begins Here++++++++++++++++++++++

#!/bin/ksh
LDAPFILE=Test.txt
# Function Name: Initialize_Variables
# Description : This function initializes the employee variables.
Initialize_Emp_Variables()
{
FNAME=""
LNAME=""
MNAME=""
EMAIL=""
DEPT=""
}

# Function Name: Process_Ldap_File
# Description : This function reads the ldap file line-by-line and
# parse it and store values of first, middle, last names
# and email and department in member variables. At the end
# of the record, it calls Update_Email_For_Name function.
Process_Ldap_File()
{
Initialize_Emp_Variables
while read data
do
# get the attribute name and attribute value from the line just read
ATTNAME=`echo $data | cut -f 1 -d :`
ATTVALU=`echo $data | cut -f 2 -d :`

# if the attribute name collected in the previous step is not null
# then it is valid data
if test $ATTNAME
then
# if the attribute name is email, store data in email
if test $ATTNAME = "mail"
then
EMAIL=$ATTVALU
fi

# if the attribute name is givenname, store data in first name
if test $ATTNAME = "givenname"
then
FNAME=$ATTVALU
fi

# if the attribute name is middleinitial, store data in middle name
if test $ATTNAME = "middleinitial"
then
MNAME=$ATTVALU
fi

# if the attribute name is sn, store data in last name
if test $ATTNAME = "sn"
then
LNAME=$ATTVALU
fi

# if the attribute name is department, store data in department
if test $ATTNAME = "department"
then
DEPT=$ATTVALU
fi

# if the attribute name is dn, it is start of new data set.
# update the employee email (if it is not a valid email address)i
# and initialize the member variables
if test $ATTNAME = "dn"
then
if test $LNAME
then
# call update email routine to update email address of the employee
Update_Email_For_Name
fi
Create_Input_File
fi
fi
done < $LDAPFILE
#
# at end, display the last employee details
if test $LNAME
then
# call update email routine to update email address of the employee
Create_Input_File
fi
}

# **************************
# Create load file function
# **************************
Create_Input_File()
{
$EMAIL $FNAME $MNAME $LNAME $DEPT >>$HOME/trial.csv
}


++++++++++++Script Ends Here+++++++++++++++++

wow thats entierly to much work for this assignment.

why dont you just use egrep and direct the output to a file?

... or use awk to pattern matching on the words and perform a little bit of processing if required (e.g. putting the different matched lines into separate files).

That's why I'm posting this thread - to get ideas. Could you provide an example.

Thanks in advance,
Leo

If you're trying to look up several at once, one possible way is using grep:
grep -e email -e name Test.txt > resultFile

----
which, now that I reread through the thread, is what Optimus_P was telling you to try anyway

You could run:

Code:

for Pattern in email name etc
do
  grep "${Pattern}" in DataFile.txt >${Pattern}.txt
done

...but remember, you may get a 1->many occurence of lines that match more than one pattern.

An even better way would be to just list all the values you want to search for inside a file (one word per line), and call it something like wordsToFind.

Then use:

grep -f wordsToFind Test.txt > resultFile