Tagged articles

Cron

222 articles · Page 3 of 3

Jan 24, 2018 · Operations

Master Essential Linux Administration: 20+ Key Topics and Practical Answers

This guide provides concise explanations and step‑by‑step instructions for fundamental Linux administration topics, covering licensing, OS selection, startup services, system optimization, runlevels, boot process, links, partitioning, file deletion, VI usage, user management, regex, sed, crontab, important directories, shutdown commands, sudoers, permission hierarchy, SecureCRT shortcuts, audit solutions, network troubleshooting, quoting rules, startup config files, log locations, IP address extraction, and a curated list of essential Linux commands.

CronLinuxfile management

0 likes · 27 min read

Master Essential Linux Administration: 20+ Key Topics and Practical Answers

MaGe Linux Operations

Dec 22, 2017 · Operations

Essential Linux System Administration Commands and Tips

This article compiles practical Linux system administration techniques, covering how to check physical CPUs and cores, interpret load averages, understand vmstat columns, differentiate buffer and cache, monitor memory usage with top, inspect network connections, manage services, configure IP addresses, use iptables, rsync options, cron jobs, and troubleshoot hardware issues.

CronLinuxcommands

0 likes · 18 min read

Essential Linux System Administration Commands and Tips

MaGe Linux Operations

Aug 30, 2017 · Operations

Mastering Shell Script Timeouts with the Linux timeout Command

This article explains how to use the Linux timeout command to reliably enforce execution limits on shell scripts, demonstrates its advantages over simple watchdog loops, shows practical examples with ping and MQ scripts, discusses return codes, and highlights common pitfalls such as background processes and function usage.

CronScriptbash

0 likes · 4 min read

Mastering Shell Script Timeouts with the Linux timeout Command

ITPUB

Aug 25, 2017 · Operations

Automate MySQL Database Backups with Bash and Cron

This guide explains how to create a reliable MySQL backup solution by checking disk space, setting up a backup directory, writing a shell script for mysqldump (with optional compression), granting execution rights, scheduling the script with crontab, and verifying the job, while also covering crontab syntax and examples.

BackupCronDatabase

0 likes · 8 min read

Automate MySQL Database Backups with Bash and Cron

ITPUB

Aug 17, 2017 · Operations

Why MySQL Errcode 28 Can Appear Even With Plenty of Disk Space

A MySQL fatal error claiming "Can't create/write to file ... (Errcode: 28)" turned out not to be a lack of disk space but exhausted inodes caused by millions of tiny maildrop files generated by cron‑driven Postfix notifications, and the article walks through the investigation and fix.

CronErrcode28MySQL

0 likes · 8 min read

Why MySQL Errcode 28 Can Appear Even With Plenty of Disk Space

ITPUB

Aug 15, 2017 · Operations

Automate MySQL Database Backups on Linux with Bash and Cron

This guide explains why database backups are essential, walks through checking disk space, creating a backup directory, writing a Bash script to dump and compress MySQL data, granting execution rights, and scheduling the script with crontab to ensure reliable, automated backups.

BackupCronDatabase

0 likes · 8 min read

Automate MySQL Database Backups on Linux with Bash and Cron

Baidu Intelligent Testing

Jul 27, 2017 · Operations

Using launchctl and plist to Run Scheduled macOS Tasks with Developer Certificates

This article explains why crontab fails to build iOS apps on macOS due to missing code‑signing credentials, and shows how to replace it with launchctl and a properly configured plist, including keychain access, required plist keys, and the SessionCreate option to ensure the developer certificate is available.

AutomationCode SigningCron

0 likes · 6 min read

Using launchctl and plist to Run Scheduled macOS Tasks with Developer Certificates

System Architect Go

May 30, 2017 · Backend Development

Understanding Scheduled Tasks and Cron in Node.js with node‑schedule

This article explains the concepts of scheduled and delayed tasks, introduces the cron syntax, and demonstrates how to use the node‑schedule library in Node.js to create reliable backend cron‑style jobs for data fetching, calculations, and backups.

CronScheduled Tasksbackend

0 likes · 3 min read

Understanding Scheduled Tasks and Cron in Node.js with node‑schedule

MaGe Linux Operations

Mar 28, 2017 · Operations

Master Linux Data Backup: Tar, Gzip, and Cron Automation Guide

This guide explains how to use the Linux tar command for manual and compressed backups, create shell scripts for automated backups with cron, and apply these techniques to back up and restore Foxmail Server data, covering command syntax, scheduling, and recovery steps.

CronData RecoveryShell script

0 likes · 11 min read

Master Linux Data Backup: Tar, Gzip, and Cron Automation Guide

ITPUB

Jul 22, 2016 · Information Security

How Mining Trojans Hijack Linux Servers: Sample 101 Analysis and Defense

The article examines a cryptocurrency mining trojan (sample 101), detailing its process list, malicious startup scripts, SSH key injection, service deployment, removal steps, and offers practical defense measures against such malware infections.

CronCryptocurrency MiningLinux

0 likes · 7 min read

How Mining Trojans Hijack Linux Servers: Sample 101 Analysis and Defense

ITPUB

May 20, 2016 · Operations

Why MySQL Errcode 28 Happens Even With Free Disk Space—and How to Fix It

A MySQL fatal error citing Errcode 28 can stem from inode exhaustion caused by a flood of cron-generated emails, not just lack of disk space, and the article walks through diagnosing the issue with df, df -i, and locating the offending Postfix maildrop directory.

CronDebuggingErrcode28

0 likes · 7 min read

Why MySQL Errcode 28 Happens Even With Free Disk Space—and How to Fix It

Java High-Performance Architecture

Apr 22, 2016 · Operations

Why Did My Server’s Load Spike to 360? Uncovering a Hidden Postdrop Crisis

A Linux server became unreachable with a massive load average of 360 due to exhausted inodes caused by a runaway postdrop process, and the issue was resolved by cleaning the maildrop directory and silencing the offending cron job.

CronLinuxinode

0 likes · 5 min read

Why Did My Server’s Load Spike to 360? Uncovering a Hidden Postdrop Crisis

Java High-Performance Architecture

Jan 5, 2016 · Operations

How to Automate Daily Nginx Log Rotation with a Bash Script

This guide explains how to automatically rotate Nginx logs each day by renaming the current log file at midnight, creating dated backup directories, and signaling the Nginx master process with USR1 using a simple Bash script scheduled via a cron job.

CronNginxOperations

0 likes · 2 min read

How to Automate Daily Nginx Log Rotation with a Bash Script

Java High-Performance Architecture

Dec 2, 2015 · Operations

Master Linux Performance Monitoring with nmon: Real‑Time & Scheduled Insights

nmon is a lightweight Linux tool that collects and displays real‑time CPU, memory, disk, and network metrics on a single screen, offers background data collection with customizable intervals, and generates analysis files that can be visualized using nmon_analyser for detailed performance reporting.

CronLinux monitoringnmon

0 likes · 4 min read

Master Linux Performance Monitoring with nmon: Real‑Time & Scheduled Insights

Java High-Performance Architecture

Nov 30, 2015 · Operations

Run Linux Cron Jobs Every Second Using a Bash Loop and Sleep

This guide explains how to achieve second‑level scheduling on Linux by combining a minute‑based crontab entry with a custom Bash script that loops and uses sleep, including a PHP test task example and step‑by‑step setup instructions.

CronLinuxPHP

0 likes · 3 min read

Run Linux Cron Jobs Every Second Using a Bash Loop and Sleep

Java High-Performance Architecture

Nov 21, 2015 · Operations

Prevent Duplicate Cron Jobs with Linux flock: A Step‑by‑Step Guide

This article demonstrates how cron jobs can overlap when a script runs longer than its schedule, and shows how to use Linux's flock file lock to ensure only one instance of the script runs at a time, preventing execution conflicts.

CronFile LockLinux

0 likes · 3 min read

Prevent Duplicate Cron Jobs with Linux flock: A Step‑by‑Step Guide

MaGe Linux Operations

Oct 7, 2015 · Operations

Master Logrotate: Automate Log Management and Prevent Disk Exhaustion on Linux

This guide explains how logrotate automatically truncates, compresses, and removes old log files, covering installation on major Linux distributions, essential configuration options, practical examples, and troubleshooting techniques to keep server storage under control.

CronLinuxLog Management

0 likes · 10 min read

Master Logrotate: Automate Log Management and Prevent Disk Exhaustion on Linux

Qunar Tech Salon

Aug 13, 2015 · Operations

How to Determine Whether a Server Is Still in Use Before Decommissioning

This article outlines a systematic approach for ops teams to assess whether a low‑utilization server is still needed by checking user logins, running services, network connections, cron jobs, and file storage—including specific commands for MySQL and PostgreSQL data inspection—to avoid accidental data loss during reclamation.

CronMonitoringServer

0 likes · 6 min read

How to Determine Whether a Server Is Still in Use Before Decommissioning

MaGe Linux Operations

May 21, 2015 · Operations

Master Linux Task Scheduling: at, batch, crontab, and anacron Explained

This guide walks you through Linux's task‑scheduling tools—at, batch, crontab, and anacron—covering one‑time and periodic job setup, command syntax, permission files, and practical examples to automate system administration tasks.

AutomationCronLinux

0 likes · 11 min read

Master Linux Task Scheduling: at, batch, crontab, and anacron Explained

MaGe Linux Operations

May 15, 2015 · Operations

Master Linux Local Mail, at/batch, and cron: A Practical Guide

This guide explains how to use Linux's local mail service and the at, batch, and cron commands to create, list, modify, and delete one‑time and recurring scheduled tasks, including command syntax, examples, and troubleshooting tips.

CronLinuxMail

0 likes · 6 min read

Master Linux Local Mail, at/batch, and cron: A Practical Guide

MaGe Linux Operations

Jul 10, 2014 · Operations

Mastering Linux Cron: How to Schedule Tasks Efficiently

This guide explains what the Linux cron service is, how to configure it via /var/spool/cron and /etc/crontab, the syntax of cron expressions, environment variables, and provides practical examples for scheduling recurring tasks.

AutomationCrontask scheduling

0 likes · 9 min read

Mastering Linux Cron: How to Schedule Tasks Efficiently

MaGe Linux Operations

Jun 23, 2014 · Operations

Automate MySQL Backups with a Simple Shell Script and Cron

This guide walks you through creating a Linux shell script that uses mysqldump to back up a MySQL database, organizing old backups, setting execution permissions, and scheduling the process with cron for reliable, automated daily backups.

AutomationCronmysql backup

0 likes · 4 min read

Automate MySQL Backups with a Simple Shell Script and Cron