Assignment – 1
v Locate lines that are longer than 100 and smaller than 150 characters using grep.
è grep -c '\{101,150\}' keval.txt
grep `^.\{100,150\}$` keval.txt
v Merge and sort the contents of files A and B and display the sorted output on the screen.
è cat file1 file2 | sort
v Convert all capital letters in a file to small case.
è tr [A-Z] [a-z] < file1
v Obtain the cont of users logged into the system.
è who | wc –l
v How will you grant read and execute permissions to the user and group for a file mca.txt?
è chmod ug+rx mca.txt
v Write a command to display all hidden files without using ls command.
è echo .*
è ls –al
v Write a command to display all the ordinary files that having no write permission to owner.
è ls –l | grep "^..-.*"
è ls -l | grep -v '^..w'
v To select line having exactly 10 alphabet
è grep '[a-ZA-z]'/{10/}
v Write a command to display those lines, which have exactly 4 characters in file.
è grep '^....$' foo
v Write a command to count number of blank lines in file.
è grep '^$' a | wc –l
v Write a command to enlist on the screen, only the directories in the current directory.
è ls –ld
v Print and sort the login names of all users.
è who|cut -d ' '-f1 | sort
v Copy a file mca.txt present in the current directory to a directory exam in the parent directory.
è cp.|mca.txt../mca
v How will you remove duplicate records from the file?
è uniq -d k113.txt
è sort k113.txt | uniq
v Write a command to display five largest files in the current directory.
è ls -S | head -5
v Select lines from the file that has exactly three character
è grep '^..$' a.lst
v Count the number of non-blank lines in the file.
è grep -c '^.*$' a.lst
v Count the number of characters in the last line of a file.
è tail -1 a.lst | wc –c
v Delete digits from the file.
è tr -d '[0-9]' k113.txt
v Write tail command that is equivalent to cat /usr/user1/file1
è tail +1 /usr/user/file1
v Display only login name of all users that are currently logged in.
è who -H | cut -f1 -d " "
v Display lines 5th to 10th of a file.
è tail +5 foo | head -5
v Display contents of file X1. (Do not use cat command)
è more X1
v Display largest file in current working directory.
è ls -x |sort -n |head -1
è ls -lS | grep "^-" | head -1
v List files which have write permission for the group.
è ls-l|grep '^....w'
v Display all files which have read and write permission for the group.
è Ls -l | grep '^...rw.'
v Display all files which have read, write permission for owner and others.
è ls -l | grep '^rw...rw'
v Count no. of users who are currently logged in (do not make use of wc command).
è Who | uniq -c
è who | grep –c
v Convert date in a format mm/dd/yy into dd/mm/yy.
è date +%d/%m/%y
v List ordinary files in your current directory which are not writable (for user only or owner only).
è ls -l | grep -u '^w'
GTU Script
2) Write shell script
a) Accept numbers and perform addition, subtraction, division and multiplication.
è a=10
echo "Enter The Value of A: "
read a
b=10
echo "Enter The Value of B: "
read b
c=0
c=`expr $a + $b`
echo "Addition " $c
c=`expr $a - $b`
echo "Subtraction " $c
c=`expr $a / $b`
echo "Division " $c
c=`expr $a \* $b`
echo "Multiplication " $c
b) Accept the string and checks whether the string is palindrome or not.
è l=0
count=1
tag=0
echo "Enter the String : "
read str
l=`echo $str |wc -c`
l=`expr $l - 1`
lh=`expr $l / 2`
while [ $count -le $lh ]
do
c1=`echo $str|cut -c$count`
c2=`echo $str|cut -c$l`
if [ $c1 != $c2 ]
then
tag=1
fi
cnt=`expr $count + 1`
l=`expr $l - 1`
done
if [ $tag -eq 0 ]
then
echo "String is Palindrome"
else
echo "String is not Palindrome"
fi
c) Accept number and check the number is even or odd, finds the length of the number, sum of the digits in the number.
è echo "Enter number:"
read no
c=`expr $no % 2`
if [ $c -eq 0 ]
then
echo "No is even "
else
echo "No is odd"
fi
cnt=`echo $no | wc -c`
cnt=`expr $cnt - 1`
echo "word count =" $cnt
i=1
while [ $i -le $cnt ]
do
j=`echo $no | cut -c $i`
k=`expr $k + $j`
i=`expr $i + 1`
done
echo "total =" $k
d) Accept strings and replace a string by another string.
è echo "Enter any string:"
read str
echo "Your string is :" $str
echo "Enter word that your what replace with other word"
read oldstr
echo "Enter new string"
read newstr
str1=`echo $str | sed s/$oldstr/$newstr/g`
str2=`echo $str | replace $oldstr $newstr`
echo "after replacing " $str1
echo "after replacing " $str2
e) Accept filename and displays last modification time if file exists, otherwise display appropriate message.
è echo "Enter file name"
read fnm
if [ ! -f $fnm ]
then
echo "File Not Found"
exit 1
fi
dt=`date -r $fnm`
echo "modification date is:" $dt
f) Fetch the data from a file and display data into another file in reverse order.
è echo "enter file name for fatching data and store in other file"
read fnm
if [ ! -f $fnm ]
then
echo "File not found"
exit 1
fi
echo "enter new file name:"
read newfile
while read -n1 char;
do
str=$char$str
done<$fnm
echo $str>$newfile
echo $newfile "successfully created on" `pwd` " path"
3) Write a script to find the global complete path for any file
è echo "enter file name to find:"
read fnm
ans=0;
if [ ! -f $fnm ]
then
if [ ! -d $fnm ]
then
echo "File not found"
exit 1
fi
fi
ans=`find /home -name $fnm `
echo $ans
4) Write a script to broadcast a message to a specified user or a group of users logged on any terminal.
è echo "Enter the User name :"
read uname
echo "Enter String u want to send (End with Control-D) :"
write $uname
echo -e "\nYour message send successfully."
5) Write a script to copy the file system from two directories to a new directory in such a way that only the latest file is copied in case there are common files in both the directories.
è EXIT=n
while [ $EXIT != y ]
do
sleep 1
echo -e "\n"
echo -e "1. Display PWD
2. Long Listing
3. Change Directory
4. Copy Newest File.
5. Exit
Enter Choice: \c"
read ch
case $ch in
1)
clear
pwd
;;
2)
clear
pwd
ls -l
;;
3)
echo -n "Enter Absolute Path to change directory: "
read apath
cd $apath
if [ $? -eq 0 ]; then # We can also check for availibility of directory before 'cd' command by 'test -d $apath' i.e. 'if [ -d $apath ]'
clear
echo "Working Directory Changed successfully to.."
sleep 1
pwd
else
clear
echo "Please check your PATH."
fi
;;
4)
clear
echo "Enter filenames to copy. ( * - for ALL Files, ELSE Separate files by spaces )"
read allfiles
if [ -f $allfiles ]; then
echo "Enter Absolute path, where to copy these files: "
read -e cpath
if [ -d $cpath ]; then
cp -u "$allfiles" $cpath # -u copies only when the SOURCE file is newer than the destination file or when the destination file is missing
else
echo "There is no such a directory!"
fi
else
echo "There is/are no such file(s)!"
fi
;;
5)
clear
echo -n "Exiting.."
sleep 1
echo -n "."
sleep 1
echo -n "."
clear
exit
;;
*)
clear
echo "Invalid Choice"
;;
esac
done
6) Write a script to compare identically named files in two different directories and if they are same, copy one of them in a third directory.
è echo "Enter 1st file full path(/home/mca/tejas/) :"
read p1
echo "Enter 2nd file full path(/home/mca/tejas/) :"
read p2
echo "Enter new path for copy"
read dest
a=`cmp $p1 $p2`
if [ $? -eq 0 ]
then
`cp $p2 $dest`
echo "File successfully copied on path: "$dest
else
echo "File not identically same"
fi
7) Write a script to delete zero sized files from a given directory (and all its sub-directories).
è for i in `find /home/mca/diz/diz -type f -size 0c`
do
echo "$i has Zero size"
echo `rm $i`
done
8) Write a script to display the name of those files (in the given directory) which are having multiple links
è temp=$(mktemp tmp.XXXXXXXXXX)
while true; do
read -e -p "Ente the Absolute Path: " path || exit
[[ -d $path ]] && break
echo "Invalid Directory!"
done
for i in $path/*
do
for j in $path/*
do
base1=`basename $i`
base2=`basename $j`
echo "$i"
echo "$j"
if test "$base1" != "$base2"; then
if test "$base1" -ef "$base2"; then
echo "$base1" >> $temp
fi
fi
done
done
cat $temp | uniq
rm $temp
9) Write a script to display the name of all executable files in the given directory.
è echo "Enter a directory name:"
read dirname
if [ -d $dirname ]
then
echo "$dirname is exist"
cd $dirname
for i in `ls`
do
if [ -f $i ]
then
e1=$(ls -l $i|cut -c1,1-10 |cut -c4)
e2=$(ls -l $i|cut -c1,1-10 |cut -c7)
e3=$(ls -l $i|cut -c1,1-10 |cut -c10)
if [ $e1 = x ]
then
if [ $e2 = x ]
then
if [ $e3 = x ]
then
echo "$i is executable file"
fi
fi
fi
fi
done
cd
else
echo "$dirname doesn't exist"
fi
10) Write a script to display the date, time and a welcome message (like Good Morning etc.). The time should be displayed with “a.m.” or “p.m.” and not in 24 hours notation.
è time=`date +%H%M%S`
d1=`date +%d/%m/%y`
t1=`date +%I:%M:%S`
echo "date:"$d1
if [ $time -ge 000000 -a $time -lt 120000 ]
then
echo "time:"$t1" a.m"
else
echo "time:"$t1" p.m"
fi
if [ $time -lt 120000 -a $time -gt 60000 ]
then
echo "GooD MorninG"
else
if [ $time -eq 120000 ]
then
echo "GooD NooN"
else
if [ $time -gt 120000 -a $time -lt 180000 ]
then
echo "GooD AfterNooN"
else
if [ $time -gt 180000 -a $time -lt 210000 ]
then
echo "GooD EveninG"
else
echo "GooD NighT"
fi
fi
fi
fi
11) Write a script to display the directory in the descending order of the size of each file.
è Echo” Enter Directory : ”
read dir
cd $dir
ls –Sl
12)
13) Write a script for generating a mark sheet after reading data from a file. File contains student roll no, name , marks of three subjects.
è tot=0
line=`cat stud.txt | wc -l`
i=1
echo "STD_ID NAME SUB1 SUB2 SUB3 TOTAL PERCENTAGE GRADE RESULT"
while [ $i -le $line ]
do
rollno=`head -$i stud.txt | tail +$i |cut -f1 -d","`
name=`head -$i stud.txt | tail +$i |cut -f2 -d","`
sub1=`head -$i stud.txt | tail +$i |cut -f3 -d","`
sub2=`head -$i stud.txt | tail +$i |cut -f4 -d","`
sub3=`head -$i stud.txt | tail +$i |cut -f5 -d","`
tot=`expr $sub1 \+ $sub2 \+ $sub3`
per=`expr $tot \/ 3`
if [ $sub1 -ge 35 -a $sub2 -ge 35 -a $sub3 -ge 35 ]
then
result="PASS"
if [ $per -ge 70 ]
then
grade="DISTINCTION"
elif [ $per -ge 60 ]
then
grade="FIRST CLASS"
elif [ $per -ge 50 ]
then
grade="SECOND CLASS"
else
grade="PASS CLASS"
fi
else
result="FAIL"
grade=" --- "
fi
i=`expr $i + 1`
echo "$rollno $name $sub1 $sub2 $sub3 $tot $per
$grade $result"
Done
14) Write a script to make following file and directory management operations menu based:
Display current directory
List directory
Make directory
Change directory
Copy a file
Rename a file
Delete a file
Edit a file
è echo " 1. Display current Directory"
echo " 2. List Directory"
echo " 3. Make directory "
echo " 4. Change directory "
echo " 5. Copy a file "
echo " 6. Rename a fIle "
echo " 7. Delete a file "
echo " 8. Edit a file "
echo " Enter Your Choice: "
read ch
case $ch in
1)
pwd
;;
2)
ls
;;
3)
echo “Enter directory name to make : ”
read dir_name
mkdir $dir_name
;;
4)
cd
;;
5)
echo “Enter two file name to copy:”
read f_name1 f_name2
cp $f_name1 $f_name2
;;
6)
echo “Enter file name to rename:”
read fname
mv $fname
;;
7)
echo “Enter file name to delete : ”
read fname
rm $fname
;;
8)
echo “Enter file name to edit : ”
read fname
vi $fname
;;
*)
echo “Plz, Enter valid choice…”
;;
esac
15) Write a script which reads a text file and output the following
Count of character, words and lines.
File in reverse.
Frequency of particular word in the file.
Lower case letter in place of upper case letter.
è echo "Enter File Name"
read fname
echo "
1...Count character,words and lines
2...Reverse File
3...Found frequency of word
4...Convert upper to lower
5...Convert lower to upper"
echo "Enter Choice: "
read ch
case $ch in
1)
echo “Total Character:”
wc -c $fname
echo “Total Words:”
wc -w $fname
echo “Total Lines:”
wc -l $fname
;;
2)
rev $fname
;;
3)
echo “Enter word to find: ”
read w
echo “Frequency:”
grep -c "$w" $fname
;;
4)
echo “Enter Text:”
read text
echo $text | tr "[A-Z]" "[a-z]"
;;
5)
echo “Enter Text:”
read text
echo $text | tr "[a-z]" "[A-Z]"
;;
*)
echo “Plz, Enter valic choice”
;;
Esac
16) Write a shell script to check whether the named user is currently logged in or not.
è echo "Enter The User name :\c "
read name
>>temp
echo "The user \c " $name
(who | grep $name >> temp ) && echo " Is currently logged in " || echo "is not logged in "
17) Write a Script for Simple Database Management System Operation.
Database File Contains Following Fields.
EMP_NO
EMP_NAME
EMP_ADDRESS
EMP_AGE
EMP_GENDER
EMP_DESIGNATION
EMP_BASIC_SALARY
Provide Menu Driven Facility For
VIEW RECORD BASED ON QUERY
ADD RECORD
DELETE RECORD
MODIFY RECORD.
COUNT TOTAL NUMBER OF RECORDS
EXIT
è ch=1
while [ $ch -ne 0 ]
do
clear
echo "1. View record based on query"
echo "2. Add record"
echo "3. Delete record"
echo "4. Edit record"
echo "5. Count total records"
echo "0. Exit"
read ch
case $ch in
1)
echo "Enter format to display(Separate Fields With Space) : ";
read format
field="";
for f in $format
do
case $f in
"NO")
field="$field,1";;
"NAME")
field="$field,2";;
"ADDRESS")
field="$field,3";;
"AGE")
field="$field,4";;
"GENDER")
field="$field,5";;
"DESIG")
field="$field,6";;
"BASIC_SALARY")
field="$field,7";;
esac
done
field="echo $field|cut -c2-"
echo "------------------------------------------------------------------"
cut -d'|' -f`echo $field` dbEMP.dat
echo "------------------------------------------------------------------"
read
;;
2)
echo "Enter Employee Information : "
echo "Emp No. : \c"; read EMP_NO
echo "Emp Name : \c"; read EMP_NAME
echo "Address : \c"; read EMP_ADDRESS
echo "Age : \c"; read EMP_AGE
echo "Gender : \c"; read EMP_GENDER
echo "Designation : \c"; read EMP_DESIGNATION
echo "Basic Salary : \c"; read EMP_BASIC_SALARY
echo "$EMP_NO|$EMP_NAME|$EMP_ADDRESS|$EMP_AGE|$EMP_GENDER|$EMP_DESIGNATION|$EMP_BASIC_SALARY" >> dbEMP.dat
;;
3)
echo "Enter Emp No. For Delete : \c"; read EMP_NO
del=`grep "^$EMP_NO" dbEMP.dat | wc -l`
grep -v "^$EMP_NO" dbEMP.dat > tmpEMP.dat
cat tmpEMP.dat > dbEMP.dat
rm tmpEMP.dat
echo "$del records Deleted"
sleep 3
;;
4)
echo "Enter emp no. for modify : \c";
read MOD_EMP_NO
mod=`grep "^$MOD_EMP_NO" dbEMP.dat | wc -l`
if [ $mod -eq 0 ]
then
echo "Record not found!!!"
sleep 3;
else
echo "Enter new emp information : "
echo "Emp No. : \c"; read EMP_NO
echo "Emp Name : \c"; read EMP_NAME
echo "Address : \c"; read EMP_ADDRESS
echo "Age : \c"; read EMP_AGE
echo "Gender : \c"; read EMP_GENDER
echo "Designation : \c"; read EMP_DESIGNATION
echo "Basic Salary : \c"; read EMP_BASIC_SALARY
terminal=`tty`
exec < dbEMP.dat
while read rec
do
echo $rec | grep "^$MOD_EMP_NO" >/dev/null
if [ $? -ne 0 ]
then
echo $rec >> tmpEMP.dat
else
echo "$EMP_NO|$EMP_NAME|$EMP_ADDRESS|$EMP_AGE|$EMP_GENDER|$EMP_DESIGNATION|$EMP_BASIC_SALARY" >> tmpEMP.dat
fi
done
cat tmpEMP.dat > dbEMP.dat
rm tmpEMP.dat
echo "$mod Record(s) Modifieded..."
sleep 3;
fi
;;
5)
echo "`grep . dbEMP.dat | wc -l` Records Found..."
sleep 3
;;
0)
;;
esac
done
18) Write A Script To Perform Following String Operations Using Menu:
COMPARE TWO STRINGS.
JOIN TWO STRINGS.
FIND THE LENGTH OF A GIVEN STRING.
OCCURRENCE OF CHARACTER AND WORDS
REVERSE THE STRING.
è while true
do
echo "1 Compare two string"
echo "2 Join two string"
echo "3 Find length of given string"
echo "4 Occurrence of char. & words"
echo "5 Reverse the string"
echo "Enter your choice :"
read ch
case $ch in
1)
echo "Enter String1:"
read str1
echo "Enter String2:"
read str2
if [ $str1 = $str2 ]
then
echo "String is equal"
else
echo "String is not equal"
fi
;;
2)
echo "Enter String1:"
read str1
echo "Enter String2:"
read str2
str3=$str1$str2
echo "Join String: $str3"
;;
3)
length=0
echo "Enter String1:"
read str1
length=`expr $str1 | wc -c`
length=`expr $length - 1`
echo "Length: $length"
;;
4)
echo "Enter String:"
read str
echo "Enter Word to find"
read word
echo $str | cat > str1.txt
grep -o $word str1.txt | cat > str2.txt
count=`grep -c $word str2.txt`
echo "Count:"$count
;;
5)
echo "Enter String1:"
read str
len=`expr $str | wc -c`
len=`expr $len - 1`
while [ $len -gt 0 ]
do
rev=`expr $str | cut -c $len`
ans=$ans$rev
len=`expr $len - 1`
done
echo "Reverse String:" $ans
;;
*)
echo "Please enter correct choice"
;;
esac
echo "Do u want to continue?[y/n]"
read ans
if [ $ans = n ]
then
exit
fi
done
19) Write a script to calculate gross salary for any number of employees
Gross Salary =Basic + HRA + DA.
HRA=10% and DA= 15%.
è ch=1
while [ $ch -eq 1 ]
do
echo "Enter Basic Salary : "
read Basic
HRA=`echo "$Basic * 10 / 100"|bc`
DA=`echo "$Basic * 15 / 100"|bc`
Gross=`expr $Basic + $HRA + $DA`
if [ $Gross -le 10000 ]; then
PT=150
elif [ $Gross -le 20000 ]; then
PT=200
elif [ $Gross -le 30000 ]; then
PT=400
else
PT=550
fi
echo "Gross Salary : $Gross"
echo "Professional Tax : $PT\n"
echo "Enter 1 For Calculate More..."; read ch
done
20) Write a script to check whether a given string is palindrome or not.
è echo "Enter String : "
read str
length=0
cnt=1
flag=0
length=`expr $str | wc -c`
length=`expr $length - 1`
temp=`expr $length / 2`
while test $cnt -le $temp
do
rev=`expr $str | cut -c $cnt`
ans=`expr $str | cut -c $length`
if [ $rev != $ans ]
then
flag=1
fi
cnt=`expr $cnt + 1`
length=`expr $length - 1`
done
if [ $flag -eq 0 ]
then
echo "String is palindrome"
else
echo "String is not palindrome"
fi
21) Write a script to check whether a given number is palindrome or not.
è clear
echo "Enter number :"
read number
rem=0
i=10
revnumber=0
for((;number>0;))
do
let revnumber=" revnumber * 10 "
let rem=" number % 10 "
let number=" number / 10 "
let revnumber=" revnumber + rem "
done
echo -e "\nReverse number :-\c"$revnumber
22) Write a script to display all words of a file in ascending order.
è echo -e "\n Enter file name : "
read fn
for i in `cat $fn`
do
echo $i >> f2.txt
done
sort f2.txt
rm f2.txt
23) Write a script to display all lines of a file in ascending order.
è echo " Enter File Name"
read fname
sort $fname
24) Write a script to display the last modified file.
è while true;
do
read -e -p "Enter Directory :" path || exit
[[ -d $path ]] && break
echo "Invalid path, Try Again!"
done
cd $path
ls * -dpltr | grep -v '/$' | tail -n1
cd $OLDPWD
25) Write a shell script to add the statement #include <stdio.h> at the beginning of every C source file in current directory containing printf and fprintf.
è while true;
do
read -e -p "Enter Directory: " path || exit
[[ -d $path ]] && break
echo "Invalid path! Try Again!"
done
path=${path%/}
myargs=`grep -l -e "printf" -e "fprintf" $path/*.c | xargs`
if [ $? -gt 1 ]; then
echo -n "No Matches were found. " && exit
fi
temp=$(mktemp tmp.XXXXXXXXX)
for i in $myargs
do
echo "Do you want to add '#include <stdio.h>' to $i?"
read S
case $S in
Y|y|YES|Yes|yes|yeah)
sed '1i\
#include<stdio.h>' "$i" > "$temp"
mv "$temp" "$i"
;;
n|N|NO|no|No|nope)
echo "Alright! Next.."
shift
;;
*)
echo "Invalid input."
;;
Esac
Done
if [ -z $myargs ]; then
echo "No Matches were found. Try another Directory"
else
clear
head -n5 $path/*.c | less
fi
rm $temp
26) Write a script that behaves both in interactive and non-interactive mode. When no arguments are supplied, it picks up each C program from current directory and lists the first 10 lines. It then prompts for deletion of the file. If the user supplies arguments with the script, then it works on those files only.
è N=$#
ext=c
if test "$N" -eq "0"; then
while true;
do
read -e -p "Enter Path: " path || exit
[[ -d $path ]] && break
echo "Invalid Path, Try Again!"
done
path=${path%/}
for i in $path/*.C
do
if [ "$i" != $path/'*.C' ]; then
mv "$i" "${i/.C/}".c
clear
fi
done
for i in $path/*."$ext"
do
if [ "$i" != "$path"/'*.c' ];
then
clear
echo "File is $i"
head -n10 "$i" | nl
sleep 1
rm -i "$i"
else
echo "There are no matching \"C\" files to Prompt in this directory."
sleep 2
clear=no
fi
done
if test "$clear" != "no";
then
clear
echo "Remaining C files in the Directory..."
ls -1 $path/*.c
fi
else
for i in $path/*.C
do
if [ "$i" != $path/'*.C' ];
then
mv "$i" "${i/.C/}".c
fi
done
for i in $*
do
clear
i="${i/.c/}"
i="$(pwd)/$i.c"
if [ -f "$i" ];
then
echo "File name is $i"
head -n10 "$i" | nl
sleep 1
rm -i "$i"
else
echo "There is no such a file with name: \"$i\" in current working directoy"
sleep 3
fi
done
clear
echo "Remaining C files in the Directory..."
ls -1 *.c
sleep 1
fi
Class Script
v write a shell script which receives any year from the keyboard and determines that year is leap year or not.
è echo "Enter year : "
read yearecho $year|grep "^[0-9]*$" >/dev/nullflg=0if [ $? -eq 0 ]; then if [ `echo "$year % 4" | bc` -eq 0 -a `echo "$year % 100" | bc` -eq 0 ]; then echo "$year is leap year" flg=1 fi fi if [ $flg -eq 0 ]; then echo "$year is not a leap year" fi v Shell script which receives any no of file name as arguments, user should check whether it is a file or dir. If it is a file then file name as well as the no of lines ,no of words and chars should be disp.(without WC command).
è for f in $*
doif [ -f $f ]; then tmp=`tty` exec < $f l=0 c=0 ch=0 w=0 while read line do l=`expr $l + 1` c=`expr length "$line"` ch=`expr $c + $ch` echo $c $ch for word in $line do w=`expr $w + 1` done done exec < $tmp echo "$f IS FILE WITH : " echo " Lines : $l" echo " Characters : $ch" echo " Words : $w"else echo "$f IS DIRECTORY. "fidone v Scripts that behaves both in interactive and non-interactive node. When no of arguments are supplied it picks up C program from current directory. Enlist 1st 10 lines. then prompts deletion of the file. if the user supplies argument. With the scripts then it works on those file only.
è N=$#
ext=cif test "$N" -eq "0"; then while true; do read -e -p "Enter Path: " path || exit [[ -d $path ]] && break echo "Invalid Path, Try Again!" done path=${path%/} for i in $path/*.C do if [ "$i" != $path/'*.C' ]; then mv "$i" "${i/.C/}".c clear fi done for i in $path/*."$ext" do if [ "$i" != "$path"/'*.c' ]; then clear echo "File is $i" head -n10 "$i" | nl sleep 1 rm -i "$i" else echo "There are no matching \"C\" files to Prompt in this directory." sleep 2 fi done if test "$clear" != "no"; then clear echo "Remaining C files in the Directory..." ls -1 $path/*.c fi else for i in $path/*.C do if [ "$i" != $path/'*.C' ]; then mv "$i" "${i/.C/}".c clear fi done for i in $* do clear i="${i/.c/}" i="$(pwd)/$i.c" if [ -f "$i" ]; then echo "File name is $i" head -n10 "$i" | nl sleep 1 rm -i "$i" else # Error for non-Existent files. echo "There is no such a file with name: \"$i\" in current working directoy" sleep 3 fi done clear echo "Remaining C files in the Directory..." ls -1 *.c sleep 1fi v Scripts that delete all leading and trailing spaces in all lines in a file. Also remove blank lines from a file.
è Clear
echo "Enter file name:"read f1if test -f $f1then terminal=`tty` exec<$f1 while read line do if test "$line" then echo $line fi donefi v Write scripts to display all the words of a file as well as line in descending order.
è Clear
echo " Enter File Name"read fnamesort $fname OR è echo -e "\n enter File name "
read fnfor i in `cat $fn`do echo $i >> f2.txtdonesort f2.txtrm f2.txt 
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