Jul 12, 2023 · Below is the bash script for reversing a number: `#!/bin/bash`: This line is known as a shebang. It is used to tell the system that this script needs to be executed using bash shell. `echo “Enter a number”`: This line is used to print the message “Enter a number” to the console.

Numbers are text too. Text can be reversed with rev without any arythmetic. #!/bin/bash clear read -p "Enter a number: " num echo $num | rev

Mar 23, 2020 · In this post, we will write a shell script to reverse a number which is given as the input. INPUT: line 1: number. OUTPUT: Print a single number which is the reverse of the given number. The following is the shell script to reverse a number which is given as the input: echo enter n read n num=0 while [ $n -gt 0 ] do num=$(expr $num \* 10) k ...

Feb 14, 2021 · Aim : Write a shell script to find reverse of a number #!/bin/bash echo "Enter a Number:" read a rev=0 sd=0 or=$a while [ $a -gt 0 ] do sd=`expr $a % 10` temp=`expr $rev \* 10` rev=`expr $temp + $sd` a=`expr $a / 10` done echo "Reverse of $or is $rev"

Mar 18, 2024 · In this tutorial, we’ll explore how to print a given number in the reverse order in Bash while preserving the negative or positive sign symbol that may appear at its beginning. 2. Task Description. Our goal is to reverse any given number provided as input, such as 1234, -1234, and 1.234.

Oct 17, 2016 · In a multi-line script form, we can use: echo "${!i}" As an example: Another way to print things in reverse order is to use the utility tac. Consider this script: Here is an example: printf "%s\n" "$@" prints out the positional parameters one …

Apr 8, 2008 · # store single digit sd = 0 # store number in reverse order rev = "" # store original number on = $n # use while loop to caclulate the sum of all digits while [ $n -gt 0 ] do sd =$ (( $n % 10 )) # get Remainder n =$ (( $n / 10 )) # get next digit # store previoues number and current digit in rev rev =$ ( echo ${rev}${sd} ) done echo "$on in a ...

Oct 20, 2008 · Write a shell program that outputs all integers upto the command line parameter starting from 1 and also should output the same numbers in the reverse order.

Jan 12, 2020 · In this article, you’ll learn how to create a Shell Script to Reverse a Number. For example, if the input is `12345`, the script will output `54321`. There are two main approaches we can take: This method works well for simple character reversal. Here’s a script that utilizes rev. Explanation: #!/bin/bash defines the interpreter for the script.

Jan 2, 2010 · If you need to write a loop that iterates backwards over numbers in bash, use for ((i=$max;i>=0;i--)) … or the like. In general, you don't want to use seq, it's not portable (even among standard Linux environments). If you're using ksh, zsh, or bash4+, you can use brace expansion: That's short and quick, but I am on older bash version.