Shell Scripting

92_Dollydaga/The Bad Tutorials/10/chmod.sh

@@ -0,0 +1,14 @@
+echo "creating new file"
+touch test
+echo "permissions on test file are-"
+ls -l
+echo "changing permissions on test file"
+chmod 777 test
+ls -l
+
+echo "Information about the current machine is -"
+uname -a
+
+
+
+

92_Dollydaga/The Bad Tutorials/11/count.sh

@@ -0,0 +1,12 @@
+echo "creating a new file"
+echo "enter some lines in the file"
+cat > test
+echo "Details about file are-"
+wc test
+echo "The number of lines in test file are-"
+wc -l test
+echo "Number of words present in test file are-"
+wc -w test
+echo "All files present in the directory are-"
+file *
+

92_Dollydaga/The Bad Tutorials/11/test

@@ -0,0 +1,3 @@
+hello
+this is a test
+this is line 3

92_Dollydaga/The Bad Tutorials/12/animals

@@ -0,0 +1,4 @@
+horse
+monkey
+ant
+lion

92_Dollydaga/The Bad Tutorials/12/sort.sh

@@ -0,0 +1,11 @@
+echo "creating a new file animals"
+echo "enter some animal names"
+cat > animals
+echo "creating a new file sports"
+echo "enter some sports names"
+cat > sports
+echo " -sorting animal names in file"
+sort animals
+echo " -sorting sport names in file"
+sort sports
+

92_Dollydaga/The Bad Tutorials/12/sports

@@ -0,0 +1,3 @@
+hokey
+badminton
+cricket

92_Dollydaga/The Bad Tutorials/13/cut.sh

@@ -0,0 +1,6 @@
+echo "creating a new file"
+echo "enter fields and info of sports players"
+cat > players
+echo "cutting name and age filed to be viewed"
+cut -d"-" -f 1,3 players
+

92_Dollydaga/The Bad Tutorials/13/players

@@ -0,0 +1,5 @@
+name-sports-age
+abc-ten-30
+qwe-ten-29
+qaz-ten-33
+ert-wdc-28

92_Dollydaga/The Bad Tutorials/14/convert.sh

@@ -0,0 +1,10 @@
+echo "creating a text file"
+echo "Enter some content in file"
+cat > text
+echo "converting all lower case to upper case"
+dd if=text of=output conv=ucase
+cat output
+echo "converting text file to europian text file"
+dd if=text of=out conv=ebcdic
+cat out
+

92_Dollydaga/The Bad Tutorials/14/out

@@ -0,0 +1 @@
+�������������������������%

92_Dollydaga/The Bad Tutorials/14/output

@@ -0,0 +1 @@
+ABCEFGHIJKLMNOPQRSTUVWXYZ

92_Dollydaga/The Bad Tutorials/14/text

@@ -0,0 +1 @@
+abcefghijklmnopqrstuvwxyz

92_Dollydaga/The Bad Tutorials/15/reduce.sh

@@ -0,0 +1,6 @@
+echo "Generating fancy text using banner command"
+banner "harshit"
+echo "compressing a text file"
+compress -v unix
+echo "uncompressing the text file"
+uncompress unix.Z

92_Dollydaga/The Bad Tutorials/15/unix

@@ -0,0 +1,5 @@
+Unix (/ˈjuːnɪks/; trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.[3]
+
+Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix variants from vendors including University of California, Berkeley (BSD), Microsoft (Xenix), IBM (AIX), and Sun Microsystems (Solaris). In the early 1990s, AT&T sold its rights in Unix to Novell, which then sold its Unix business to the Santa Cruz Operation (SCO) in 1995.[4] The UNIX trademark passed to The Open Group, a neutral industry consortium, which allows the use of the mark for certified operating systems that comply with the Single UNIX Specification (SUS). As of 2014, the Unix version with the largest installed base is Apple's macOS.[citation needed]
+
+Unix systems are characterized by a modular design that is sometimes called the "Unix philosophy". This concept entails that the operating system provides a set of simple tools that each performs a limited, well-defined function,[5] with a unified filesystem (the Unix filesystem) as the main means of communication,[3] and a shell scripting and command language (the Unix shell) to combine the tools to perform complex workflows. Unix distinguishes itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language, thus allowing Unix to reach numerous platforms.[6]

92_Dollydaga/The Bad Tutorials/18/read.sh

@@ -0,0 +1,3 @@
+echo "Enter your name"
+read my_name
+echo "Hello $my_name"

92_Dollydaga/The Bad Tutorials/19/newname

@@ -0,0 +1 @@
+hello asjdhj

92_Dollydaga/The Bad Tutorials/19/positionalpara.sh

@@ -0,0 +1,11 @@
+echo "Creating a file"
+echo "Enter some content to the file"
+cat > test
+ls
+echo "Provide a new name for file"
+read name
+mv test $name
+echo "File name has been changed"
+ls
+cat $name
+

92_Dollydaga/The Bad Tutorials/20/positionalpara2.sh

@@ -0,0 +1,11 @@
+ls -l
+chmod 722 $1
+ls -l 
+chmod 775 $1
+echo "using set command"
+set shell programming is cool
+echo $1
+echo $2
+echo $3
+echo $4
+echo $*

92_Dollydaga/The Bad Tutorials/21/123.harshit

@@ -0,0 +1,3 @@
+qweasdzxc
+asdasdffascd
+csacasfdaedsa

92_Dollydaga/The Bad Tutorials/21/accentgrave.sh

@@ -0,0 +1,9 @@
+ls 
+echo "using accent grave to change file format"
+name=$1
+set `whoami`
+mv $name $name.$1
+ls
+echo "using accent grave to print file content"
+set `cat sample`
+echo $*

92_Dollydaga/The Bad Tutorials/21/sample

@@ -0,0 +1,3 @@
+123adsads
+qwxasxc
+ecascc

92_Dollydaga/The Bad Tutorials/22/count2.sh

@@ -0,0 +1 @@
+echo the total number items in the current directory is=$#

92_Dollydaga/The Bad Tutorials/23/arithmatic.sh

@@ -0,0 +1,6 @@
+a=30 b=15
+echo `expr $a + $b`
+echo `expr $a - $b`
+echo `expr $a \* $b`
+echo `expr $a / $b`
+echo `expr $a % $b`

92_Dollydaga/The Bad Tutorials/24/arithmatic.sh

@@ -0,0 +1,2 @@
+a=30 b=15 c=2 d=5
+echo `expr $a \* \( $b + $c \) / $d`

92_Dollydaga/The Bad Tutorials/25/realnum.sh

@@ -0,0 +1,7 @@
+a=10.5
+b=3.5
+c=`echo $a + $b | bc`
+d=`echo $a - $b | bc`
+e=`echo $a \* $b | bc`
+f=`echo $a / $b | bc`
+echo $c , $d , $e , $f

92_Dollydaga/The Bad Tutorials/26/escape.sh

@@ -0,0 +1,6 @@
+echo "Using escape sequences"
+echo "Hey World, \nWhats up ?"
+echo "Hey World, \rWhats up ?"
+echo "Hey World, \tWhats up ?"
+echo "Hey World, \b\b\b\b\b\b\bWhats up ?"
+echo "\033[1mHey World, \nWhats up?"

92_Dollydaga/The Bad Tutorials/27/tput.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+tput clear
+echo "Total number of rows on screen=\c"
+tput lines
+echo "Total number of columns on screen=\c"
+tput cols
+tput cup 5 20
+tput bold
+echo "this should be in bold"
+echo "\033[0mBYE BYE"
+
+

92_Dollydaga/The Bad Tutorials/28/if-else.sh

@@ -0,0 +1,8 @@
+echo "Enter source and target file name"
+read source target
+if mv $source $target
+then
+echo "Renamming was succesful"
+else
+echo "Renamming unsuccesful"
+fi

92_Dollydaga/The Bad Tutorials/3/calender.sh

@@ -0,0 +1,8 @@
+echo "Calender of current month"
+cal
+echo "Calender of july 2007"
+cal 7 2007
+echo "Date is-"
+date
+echo "date and time are-"
+date '+DATE:%m-%y%nTIME:%H:%M:%S'

92_Dollydaga/The Bad Tutorials/30/check.sh

@@ -0,0 +1,11 @@
+echo "Enter anumber between 10 and 20"
+read num
+if [ $num -lt 10 ]
+then 
+  	echo "That was below range"
+elif [ $num -gt 20 ]
+then
+	echo "That was above range"
+else
+	echo "Your number is $num"
+fi

92_Dollydaga/The Bad Tutorials/31/file-test.sh

@@ -0,0 +1,18 @@
+echo "Enter a name:\c"
+read fname
+if [ -f $fname ]
+then 
+	echo "Yes it is a file"
+else
+	echo "It's not a file"
+fi
+
+echo "Enter a name:\c"
+read fname
+if [ -d $fname ]
+then 
+	echo "Yes it is a directory"
+else
+	echo "It's not a directory"
+fi
+

92_Dollydaga/The Bad Tutorials/32/apend.sh

@@ -0,0 +1,12 @@
+echo "Enter a name:\c"
+read fname
+if [ -f $fname ]
+then 
+	if [ -w $fname ]
+	then
+		echo "Type matter to append. to quit type ctrl+d."
+		cat >> $fname
+	else
+		echo "you do not have permission to write."
+	fi
+fi

92_Dollydaga/The Bad Tutorials/32/test

@@ -0,0 +1,2 @@
+hello , this is a test.
+how is it going

92_Dollydaga/The Bad Tutorials/33/string-test.sh

@@ -0,0 +1,15 @@
+str1="hey You!"
+str2="wHATS UP?"
+str3=""
+
+[ "$str1" = "$str2" ]
+echo $?
+
+[ "$str1" != "$str2" ]
+echo $?
+
+[ -n "$str1" ]
+echo $?
+
+[ -z "$str3" ]
+echo $?

92_Dollydaga/The Bad Tutorials/34/and.sh

@@ -0,0 +1,8 @@
+echo "Enter a number between 50 and 100:\c"
+read num
+if [ $num -le 100 -a $num -ge 50 ]
+then 
+	echo "You are within limits."
+else
+	echo "You are out of limits."
+fi

92_Dollydaga/The Bad Tutorials/35/count.sh

@@ -0,0 +1,8 @@
+echo "Enter a character:\c"
+read var
+if [ `echo $var | wc -c` -eq 2 ]
+then
+	echo "You entered a character."
+else
+	echo "Invalid input."
+fi

92_Dollydaga/The Bad Tutorials/36/or.sh

@@ -0,0 +1,13 @@
+echo "Enter a character:\c"
+read var
+if [ `echo $var | wc -c` -eq 2 ]
+then
+	if [ $var = a -o $var = e -o $var = i -o $var = o -o $var = u ]
+	then
+		echo "you entered a vovel"
+	else
+		echo "Youd didnt entered a vovel"
+	fi
+else
+	echo "Invalid input."
+fi

92_Dollydaga/The Bad Tutorials/37/case.sh

@@ -0,0 +1,19 @@
+echo "Enter a character:\c"
+read var
+case $var in
+[a-z]) 
+	echo "You entered a lowe case alphabet."
+	;;
+[A-Z])
+	echo "You entered a upper case alphabet."
+	;;
+[0-9])
+	echo "You entered a digit."
+	;;
+?)
+	echo "You entered a special symbol."
+	;;
+*)
+	echo "You entered more than one character."
+	;;
+esac

92_Dollydaga/The Bad Tutorials/38/word.sh

@@ -0,0 +1,19 @@
+echo "Enter a word:\c"
+read word
+case $word in
+[aeiou]* | [AEIOU]*)
+			echo "The word begins with a vovel."
+			;;
+[0-9]*)
+			echo "The word begins with a digit."
+			;;
+*[0-9])
+			echo "The word ends with a digit."
+			;;
+???)
+			echo "you entered a 3 letter word."
+			;;
+*)
+			echo "I dont know what you enetred."
+			;;
+esac

92_Dollydaga/The Bad Tutorials/39/while.sh

@@ -0,0 +1,6 @@
+count=1
+while [ $count -le 10 ]
+do
+	echo $count
+	count=`expr $count + 1`
+done

92_Dollydaga/The Bad Tutorials/40/until.sh

@@ -0,0 +1,7 @@
+#until loop in action
+count=1
+until [ $count -ge 10 ]
+do
+	echo $count
+	count=`expr $count + 1`
+done

92_Dollydaga/The Bad Tutorials/40/until1.sh

@@ -0,0 +1,7 @@
+#until loop in action
+count=1
+until [ $count -gt 10 ]
+do
+	echo $count
+	count=`expr $count + 1`
+done

92_Dollydaga/The Bad Tutorials/41/for.sh

@@ -0,0 +1,7 @@
+for item in *
+do 
+	if [  -d $item ]
+	then
+		echo $item
+	fi
+done

92_Dollydaga/The Bad Tutorials/41/for1.sh

@@ -0,0 +1,7 @@
+for item in *
+do 
+	if [  -f $item ]
+	then
+		echo $item
+	fi
+done

92_Dollydaga/The Bad Tutorials/42/test.sh

@@ -0,0 +1,4 @@
+a=4.5
+b=4.5
+[ "$a" = "$b" ]
+echo $?

92_Dollydaga/The Bad Tutorials/42/test1.sh

@@ -0,0 +1,4 @@
+a=4.5
+b=4.5
+[ $a -eq $b ]
+echo $?

92_Dollydaga/The Bad Tutorials/43/grep.sh

@@ -0,0 +1,5 @@
+grep -i you test_file
+grep -i -n you test_file
+grep -i -n -c you test_file
+grep -i -n -c -v you test_file
+grep -i -v you test_file