All loops example in shell script

shell_script_loops.md

• continue: Skips the rest of the current loop iteration and proceeds with the next iteration.
• break: Exits the loop immediately.

Here are examples demonstrating the use of continue and break in each type of loop:

Using for loop:

#!/bin/bash

for file in "$PWD"/*
do
    if [[ $file == *".skip" ]]; then
        continue  # Skip files with ".skip" extension
    fi

    echo "Processing file: $file"

    if [[ $file == *".stop" ]]; then
        break  # Stop processing if file has ".stop" extension
    fi
done

Using C-style for loop:

#!/bin/bash

files=("$PWD"/*)
for ((i=0; i<${#files[@]}; i++))
do
    if [[ ${files[i]} == *".skip" ]]; then
        continue  # Skip files with ".skip" extension
    fi

    echo "Processing file: ${files[i]}"

    if [[ ${files[i]} == *".stop" ]]; then
        break  # Stop processing if file has ".stop" extension
    fi
done

Using while loop:

#!/bin/bash

files=("$PWD"/*)
i=0
while [ $i -lt ${#files[@]} ]
do
    if [[ ${files[i]} == *".skip" ]]; then
        ((i++))
        continue  # Skip files with ".skip" extension
    fi

    echo "Processing file: ${files[i]}"

    if [[ ${files[i]} == *".stop" ]]; then
        break  # Stop processing if file has ".stop" extension
    fi

    ((i++))
done

Using until loop:

#!/bin/bash

files=("$PWD"/*)
i=0
until [ $i -ge ${#files[@]} ]
do
    if [[ ${files[i]} == *".skip" ]]; then
        ((i++))
        continue  # Skip files with ".skip" extension
    fi

    echo "Processing file: ${files[i]}"

    if [[ ${files[i]} == *".stop" ]]; then
        break  # Stop processing if file has ".stop" extension
    fi

    ((i++))
done

Using select loop:

#!/bin/bash

select file in "$PWD"/*
do
    if [[ $file == *".skip" ]]; then
        continue  # Skip files with ".skip" extension
    fi

    echo "Processing file: $file"

    if [[ $file == *".stop" ]]; then
        break  # Stop processing if file has ".stop" extension
    fi
done

In these examples, the continue statement is used to skip processing files with the .skip extension, and the break statement is used to stop the loop if a file with the .stop extension is encountered.