The Bash shell is an incredible tool that offers a lot of terminal ease and functionality. This quick tutorial shall discuss various ways to loop through directories and perform certain functions recursively. The Bash for loop To achieve a recursive loop through directories, we will use bash loop...
To traverse through files in a directory in Bash, the recommended approach is to employ a "for loop" along with a glob. for f in *.jpg; do echo "- Processing file: $f" done I require the total count and current index of the loop interaction, but not the cumulative count , to dis...
In the above code example, the variablemain_directoryis used to specify the path where the subdirectories with files are located. The outer loop iterates through each of the subdirectories within themain_directory. The inner loop checks if the item is a regular file using[ -f "$file" ]to...
This is a colon-separated list of directories in which the shell looks for destination directories specified by the cd command. A sample value is ``.:~:/usr''. ENV If this parameter is set when bash is executing a shell, as in .bashrc. The value of ENV is sub jected to ...
Its default is to descend into all subdirectories. Looping for fun and profit The more you use loops, the more time and effort you save, and the bigger the tasks you can tackle. You're just one user, but with a well-thought-out loop, you can make your computer do the hard work. ...
It then uses this sorted array to loop through the associative array ARRAY. Using a C-style for loop, it loops through the associative array named ARRAY using the associative array's keys and outputs both the key and values for each item. It creates an indexed array of the ass...
Check if string starts with sub-string Check if string ends with sub-stringARRAYS Reverse an array Remove duplicate array elements Random array element Cycle through an array Toggle between two valuesLOOPS Loop over a range of numbers Loop over a variable range of numbers Loop over an array...
while: Similar to the"for"keyword, it creates a loop that continues executing a block of commands as long as a specified condition is true. do: Marks the beginning of the block of commands to be executed in a loop (used in conjunction with “for” and “while”). ...
#This loop will go to each immediate child and execute dir_command find . -maxdepth 1 -type d \( ! -name . \) | while read dir; do dir_command"$dir/" done #This example loop only loops through give set of folders declare -a dirs=("dir1""dir2""dir3") ...
17. Create Directories It is effortless to create directories in bash unless you need to create a lot of directories quickly. In the following example, we will use the bash script to create a set of directories with the same subdirectories in each. ...