{"id":176,"date":"2025-11-30T21:37:31","date_gmt":"2025-11-30T21:37:31","guid":{"rendered":"https:\/\/adler-tech.com\/?page_id=176"},"modified":"2026-04-13T14:21:30","modified_gmt":"2026-04-13T13:21:30","slug":"advanced-text-processing-log-analysis-training","status":"publish","type":"page","link":"https:\/\/adler-tech.com\/?page_id=176","title":{"rendered":"Advanced Text Processing &amp; Log Analysis Training"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><strong>Duration:<\/strong> <strong>2 days<\/strong> (8h\/day) \u2192 16 hours total<br><strong>Tools:<\/strong> awk, sed, grep, cut, sort, uniq, jq, xargs, tee, tr, head\/tail, regex, logrotate, syslog, journald, modern log pipelines.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Day 1 \u2014 Advanced Text Processing<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 1 \u2014 Mastering grep &amp; Regex<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extended regex<\/li>\n\n\n\n<li>Lookaheads\/lookbehinds<\/li>\n\n\n\n<li>Grep performance tuning (-F, -P, -w, -m)<\/li>\n\n\n\n<li>Multiline patterns<\/li>\n\n\n\n<li>Grep in massive directories<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 2 \u2014 awk Deep Dive<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Field manipulation<\/li>\n\n\n\n<li>Conditionals, loops, functions<\/li>\n\n\n\n<li>Aggregations, statistics, reporting<\/li>\n\n\n\n<li>Parsing CSV\/JSON-like logs<\/li>\n\n\n\n<li>Combining awk with pipes and xargs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 3 \u2014 sed for Editing Streams<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pattern space vs hold space<\/li>\n\n\n\n<li>Stream editing in pipelines<\/li>\n\n\n\n<li>Substitutions, global flags<\/li>\n\n\n\n<li>Multi-line sed<\/li>\n\n\n\n<li>In-place file transformations<\/li>\n\n\n\n<li>Practical patching via sed scripts<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 4 \u2014 Core Unix Filters<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>cut, paste, tr, sort, uniq, wc, tee<\/li>\n\n\n\n<li>Efficient multi-stage pipelines<\/li>\n\n\n\n<li>Optimizing pipe order for large logs<\/li>\n\n\n\n<li>head\/tail tricks<\/li>\n\n\n\n<li>File descriptor redirection patterns<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 5 \u2014 JSON, YAML, System Outputs<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>jq for JSON logs<\/li>\n\n\n\n<li>YAML extraction using yq basics<\/li>\n\n\n\n<li>Converting logs to structured data<\/li>\n\n\n\n<li>Extracting metrics from APIs and CLI outputs<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Day 2 \u2014 Log Analysis, Pipelines &amp; Automated Processing<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 6 \u2014 Linux Logging Systems<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Syslog architecture<\/li>\n\n\n\n<li>journald internals<\/li>\n\n\n\n<li>journalctl filtering (boot, unit, priority, time)<\/li>\n\n\n\n<li>Forwarding logs (syslog \u2192 remote destinations)<\/li>\n\n\n\n<li>Logrotate patterns and performance tuning<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 7 \u2014 Log Analysis Techniques<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pattern extraction<\/li>\n\n\n\n<li>Frequency analysis<\/li>\n\n\n\n<li>Error rate calculations<\/li>\n\n\n\n<li>Correlating multi-file logs<\/li>\n\n\n\n<li>Detecting anomalies in sequences<\/li>\n\n\n\n<li>Time-based analysis<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 8 \u2014 Building Analysis Pipelines<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Streaming logs vs static files<\/li>\n\n\n\n<li>Live monitoring with tail -F<\/li>\n\n\n\n<li>Combining tools into long pipelines<\/li>\n\n\n\n<li>Using make or shell scripts to automate analysis<\/li>\n\n\n\n<li>Generating reports from logs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 9 \u2014 Handling Huge Files<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>50GB+ log strategy<\/li>\n\n\n\n<li>Using mmap-enabled tools (ripgrep, mawk)<\/li>\n\n\n\n<li>Sampling techniques<\/li>\n\n\n\n<li>Parallel processing using GNU parallel<\/li>\n\n\n\n<li>Memory-safe pipelines<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Chapter 10 \u2014 Practical Troubleshooting Scenarios<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Performance issues<\/li>\n\n\n\n<li>Authentication failures<\/li>\n\n\n\n<li>Networking drops<\/li>\n\n\n\n<li>Web server errors (Apache\/Nginx\/Balancers)<\/li>\n\n\n\n<li>System crashes and kernel messages<\/li>\n\n\n\n<li>Security incident traces (suspicious commands\/user activity)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Duration: 2 days (8h\/day) \u2192 16 hours totalTools: awk, sed, grep, cut, sort, uniq, jq, xargs, tee, tr, head\/tail, regex, logrotate, syslog, journald, modern log pipelines. Day 1 \u2014 Advanced Text Processing Chapter 1 \u2014 Mastering grep &amp; Regex Chapter 2 \u2014 awk Deep Dive Chapter 3 \u2014 sed for Editing Streams Chapter 4 \u2014 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":11,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-176","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Advanced Text Processing &amp; Log Analysis Training - ADLER-TECH<\/title>\n<meta name=\"description\" content=\"Tired of greping thousands lines of logs? 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