This post was published long ago, when I was a student and an amateur blogger. The links might be broken and content may not be useful anymore. Please read this content keeping its age in mind.
Subject : System Software Laboratory
Branch : Information Science & Engineering
Semester : 6
University : VTU
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PART -B
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3.a) Shell function that takes a valid directory names as an argument an recursively descends all the sub directories, finds the maximum length of any file in that hierarchy and writes this maximum value to the standard output.
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clear
find
{
clear tput
echo -e “Enter a valid directory name : ”
read dir
if [ -d @dir ]
then
ls -1R $dir>file1
grep -h “^-r” file1>file2
cat file2
cut -c 24-28 file2>file3
sort -n file3>file4
tail -1 file4>file5
echo -e “Max length is ”
cat file5
else
else
echo -e “Invalid dir ”
fi
}
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