Ceng 328 Operating System Lab Quiz1

Sec1:

Write a shell script that copies the files including the specified word in the specified directory to the given destination path with specifed names.

Usage of the script: copy ceng ece cengcourses ececourses

Means: copy all files, including ‘ceng’ word, in the cengcourses directory to the ececourses directory with changing the word ‘ceng’ to word ‘ece’.

copy: script name

ceng: part of the name of files that will be copied

ece: new part of the name of copied files

cengcourses: directory name

ececoıurses: directory name

Answer:

old=$1

new=$2

dir1=$3

dir2=$4

cd $dir1

for file in *

do

echo $file

if test -f $file

then

newfile=`echo $file | sed "s/$old/$new/"`

if test -f $newfile

then

echo "ERROR: $newfile exists already"

else

echo "moving $file to the $dir2/$newfile ..."

cp $file $dir2/$newfile

fi

fi

done

Sec2:

Write a shell script that renames all files including the specified word in the specified directory.

Usage of the script: rename ceng ece courses

Means: renames the all files that include ‘ceng’ word to the ‘ece’ word in the courses directory

rename: script name

ceng: old word which will be find and changed by the new word

ece: new word

courses: directory name

old=$1

new=$2

dir=$3

cd $dir

for file in *

do

echo $file

if test -f $file

then

newfile=`echo $file | sed "s/$old/$new/"`

if test -f $newfile

then

echo "ERROR: $newfile exists already"

else

echo "renaming $file to $newfile ..."

mv "$file" "$newfile"

fi

fi

done

Sec3:

Write a shell script that moves the files including the specified word in the specified directory to the given destination path with specifed names.

Usage of the script: move ceng ece cengcourses ececourses

Means: move all files, including ‘ceng’ word, in the cengcourses directory to the ececourses directory with changing the word ‘ceng’ to word ‘ece’.

move: script name

ceng: part of the name of files that will be moved

ece: new part of the name of moved files

cengcourses: directory name

ececoıurses: directory name

Answer

old=$1

new=$2

dir1=$3

dir2=$4

cd $dir1

for file in *

do

echo $file

if test -f $file

then

newfile=`echo $file | sed "s/$old/$new/"`

if test -f $newfile

then

echo "ERROR: $newfile exists already"

else

echo "moving $file to the $dir2/$newfile ..."

mv $file $dir2/$newfile

fi

fi

done