crontab not creating text file

Shell Programming and Scripting
1

while running the following code in ssh crontab, Its running successfully
but its not creating text file IFC1.txt, file1.txt, file2.txt
while running manually its working.
please help me

#!/bin/ksh
hostname > file1.txt 2>/dev/null
hostname >> file1.txt 2>/dev/null
sudo df -h | grep webMethods > file2.txt 2>/dev/null
awk -F, 'NR==FNR{a[$3]=$1;next}$3 in a {$4=a[$3]}1' file1.txt file2.txt >IFC1.txt 2>/dev/null
date
2

Your script is creating the files, just not where you expect them to be created.
Specify the full absolute path.

#!/bin/ksh
DESTINATION_PATH=/tmp
hostname > $DESTINATION_PATH/file1.txt 2>/dev/null
hostname >> $DESTINATION_PATH/file1.txt 2>/dev/null
sudo df -h | grep webMethods > $DESTINATION_PATH/file2.txt 2>/dev/null
awk -F, 'NR==FNR{a[$3]=$1;next}$3 in a {$4=a[$3]}1' $DESTINATION_PATH/file1.txt $DESTINATION_PATH/file2.txt >$DESTINATION_PATH/IFC1.txt 2>/dev/null
4

Thank you ! very much its working now