Linux Imagine that you want to store all the errors generated by your script int

Question

Linux

Imagine that you want to store all the errors generated by your script into an error log. Currently, you'd have to add 2>>error Log to every line that may produce an error. Instead, you can tell the script to redirect a specific input/output for the duration of the whole script using exec . For example, exec 1>test out redirects the default/normal output to a file test out , for the whole script. Write a script that takes 2 arguments: a file, and a folder. It moves that file to that folder, without te sting anything about them , or displaying any message. If errors occurred, your script will ask the user whether he/she wants to read them (Y/N) and, if so, it will display them. Use exec in this script.

Explanation / Answer

CODE:

Script usuage:<Script> <fine name> <folder name> (Example--> ksh a.ksh error.log /home/user)

#!/bin/ksh

#Two parameters should be passed to script
if [[ $# -ne 2 ]];then
echo "Please pass Two argumants"
echo "Usuage:<Script> <fine name> <folder name>"
fi

file_name=$1
folder_name=$2
full_file_path=$folder_name/$file_name

#Getting error file size before running process
file_size_before=`ls -l ${full_file_path} | awk '{$5=$5*8}1' | cut -d" " -f5`

#create error file if it doesn't exit
if [[ ! -f $full_file_path ]];then
touch
fi

#exec command
exec 2>> $full_file_path

#The below line error will be captured in the error file
ech "This line has syntax error. Instead of echo gave sch"

#Getting error file size after running process
file_size_after=`ls -l ${full_file_path} | awk '{$5=$5*8}1' | cut -d" " -f5`

#If the file size is changed, that means error is captured
if [[ ! "${full_file_path}" == "${file_size_after}" ]];then
echo "Error details are captured. Are you want to view? type Y/N"
read text
if [[ $text == "Y" ]];then
echo "----------- ERROR FILE ----------"
cat ${full_file_path}
echo "exit 0"
exit 0
else
echo "exit 0"
exit 0
fi
fi

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