shell scripting – Page 2 – CodeRavo

Understanding Exit Status Checking in Bash Scripts

Introduction In shell scripting, particularly with Bash, understanding how to check and handle exit statuses is … Understanding Exit Status Checking in Bash ScriptsRead more

Bash, error handling, exit-status, if-statement, shell scripting, variable

Executing Python Programs from Shell Scripts

In this tutorial, we will explore how to execute Python programs from within shell scripts. This … Executing Python Programs from Shell ScriptsRead more

executable-files, high-performance-computing, python-execution, shebang-line, shell scripting

Directing Output to Standard Error in Bash

Understanding Standard Output and Standard Error In Unix-like operating systems, every process has three standard file … Directing Output to Standard Error in BashRead more

Bash, echo, error handling, file-descriptors, printf, redirection, shell scripting, shell-functions, stderr, stdout

Performing Logical OR Operations for Integer Comparison in Shell Scripting

Introduction to Logical Operators in Shell Scripting When writing shell scripts, you often need to perform … Performing Logical OR Operations for Integer Comparison in Shell ScriptingRead more

arithmetic-evaluation, Bash, integer-comparison, logical-or-operation, shell scripting, short-circuit-behavior, test-construct

Executing Tasks at Sub-Minute Intervals: Alternatives to Cron

Introduction Cron is a time-based job scheduler in Unix-like operating systems, designed to execute scripts or … Executing Tasks at Sub-Minute Intervals: Alternatives to CronRead more

cron, fcron, Linux, shell scripting, sub-minute-scheduling, systemd, task-scheduler

Handling 'sudo: no tty present' Errors

Understanding the ‘sudo: no tty present’ Error The error message "sudo: no tty present and no … Handling 'sudo: no tty present' ErrorsRead more

askpass, Automation, Linux, passwordless-sudo, Security, shell scripting, sudo, sudoers, terminal, tty

Testing if a Variable is a Number in Bash

In Bash, it’s often necessary to verify whether a variable contains a numeric value. This can … Testing if a Variable is a Number in BashRead more

arithmetic-expansion, Bash, numeric validation, pattern matching, regular expressions, shell scripting

How to List Files in a Directory Using Shell Scripting

Introduction When working with shell scripts, you often need to interact with files and directories. One … How to List Files in a Directory Using Shell ScriptingRead more

Bash, directory, find command, for loop, globbing, hidden-files, list-files, shell scripting

Mastering Single-Line Loops in Bash

Loops are a fundamental construct in programming, allowing you to execute a set of commands repeatedly. … Mastering Single-Line Loops in BashRead more

Bash, for loop, loops, shell scripting, single-line-loops, until-loop, while loop

Redirecting Standard Output and Standard Error in Bash

Redirecting Standard Output and Standard Error in Bash When executing commands in Bash, programs communicate through … Redirecting Standard Output and Standard Error in BashRead more

Bash, file-descriptors, logging, redirection, Scripting, shell scripting, standard-error, standard-output, stderr, stdout