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Igor Oseledko
Timeline
Scripting
Commands & Shells
Fuzzy Search with Linux
Commands & Shells
Appending Filenames
Commands & Shells
Renaming Files with exiftool, Part II
Commands & Shells
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Verifying SNMP Connectivity on Multiple Hosts
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Validating HTTPS Cache Peers for Squid
Applications
Updating PHP 5.6w to 7.1u on CentOS 6.10
Applications
Windows 10 Upgrades
Machine Learning
LLM Collapse Explained
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Disks and Volumes
Files
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Commands & Shells
Fuzzy Search with Linux
Commands & Shells
Appending Filenames
Disaster Recovery
Basic Data Recovery in Linux
Commands & Shells
Renaming Files with exiftool, Part II
Monitoring
All
Performance
Processes
Social Networks
Facebook
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Performance
Analyzing atop Logs with atopsar
Commands & Shells
Verifying SNMP Connectivity on Multiple Hosts
Commands & Shells
Selecting Time Ranges from Logs, Part 2
Performance
Server and Application Resiliency Testing
Networking
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Email
Networking
Validating HTTPS Cache Peers for Squid
Commands & Shells
Verifying SNMP Connectivity on Multiple Hosts
Commands & Shells
Bulk-Adding IPTables Rules
Networking
Automatically Block Frequent Visitors
Photography
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Photography
Sun Juan Mountains, Colorado
Commands & Shells
Detecting Blurry Photos with ImageMagick
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Longwood Gardens, August 2019
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Finding Duplicate Photos
Home
2025
Archives
History
When Unix Let You Nuke Root and Live to Brag About...
Igor
-
May 8, 2025
History
Unix Pipes: Lazy Programmer’s Shortcut Becomes Sysadmin’s Monstrous One-Liner
Igor
-
May 8, 2025
History
Ctrl-C: Modern Admins Channeling Ancient Telegraph Tantrums
Igor
-
May 8, 2025
History
Kernel Panic: Unix Drama Queens Still Freaking Out After 40 Years
Igor
-
May 8, 2025
History
Unix shell history: because programmers can’t spell
Igor
-
May 8, 2025
History
Tar command: forever confusing new admins with outdated tape terminology
Igor
-
May 8, 2025
History
The origin of “cron”: Time management, Greek gods, and academia
Igor
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May 8, 2025
History
GNU/Linux’s recursive self-referential acronym: RMS’s linguistic prank
Igor
-
May 8, 2025
History
Linux Admins Wiggle Mice, Smash Keys to Appease RNG Gods
Igor
-
May 8, 2025
History
The Magic Numbers
Igor
-
May 8, 2025
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