In this example, we have an arraynumberswith five elements. We use a ‘for’ loop to iterate through each element in the array. Inside the loop, we have a conditional ‘if’ statement that checks if the current number is even or odd (using the modulus operator%). Depending on the resu...
Bash while Loop Iterate through an Array An array stores multiple elements of the same data type. Loop structures serve as a fundamental tool for iterating through arrays and performing operations on each of their elements. For example, let’s create a Bash script that has an array of 5 ele...
Now comes the fun part; we need to set up the for loop, which using the iterator “i” will iterate through the array’s contents and perform the display function. You can do it as such: This line sets up the loop. With the “$” symbol, we are specifying that we are trying to ...
How to iterate over a Bash Array? (loop) As discussed above, you can access all the values of a Bash array using the * (asterisk) notation. Though, to iterate through all the array values you should use the @ (at) notation instead. ...
In this example, we first added “Australia” to ourcountriesarray using+=. We then removed the second element (“UK”) usingunset. The updated array is then printed out, showing the changes. Looping Through Arrays You can iterate through the elements of a Bash array using aforloop. Here...
The bash loop will iterate through items in the array and use theechocommand to print them with theFruit:prefix. This is what the output looks like: If you add another command, the loop will operate on the same item before moving to the next one. For example, we’ll insert anotherecho...
/bin/bash # Initialize the original array numbers_array=(1 2 3 4) # Create a new array to hold the reversed elements reversed_numbers=() # Get the length of the array length=${#numbers_array[@]} # Inversely iterate through the array for ((i=$length-1; i>=0; i--)); do ...
# Save the PID of the scp of a given server for laterdone# Iterate through all the servers and:# Wait for the return code of each# Check the exit code from each scpforserverin${!server_pid[*]};dowait${server_pid[$server]}test$?-ne0&&echo"ERROR: Copy from$serverhad problems, ...
#!/bin/bash #creating the array with 4 elements nums_array=(1 2 3 4) #print the original array echo “original array: ${nums_array[*]}” echo #for extra space # Get the length of the array length=${#nums_array[@]} echo “reversed array:” # Iterate through the array in rever...
How to iterate over a bash array? A Bash Array can be easily iterated over with a for loop construct and the array at @ notation. For a detailed example of a loop over a bash array, see How to iterate over a Bash Array? (loop). ...