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📊 Log Analysis Mastery: The Ultimate Cheat Sheet

📜 Basic Log Viewing

Command	Description	Example
cat	📄 Display entire log file	cat /var/log/syslog
less	📃 View log file with pagination	less /var/log/auth.log
tail	🔚 View end of log file	tail /var/log/apache2/access.log
head	🔝 View beginning of log file	head /var/log/mysql/error.log

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🚀 GNU Parallel Mastery: The Ultimate Cheat Sheet

📊 Basic Usage

Command	Description	Example
parallel echo ::: A B C	🔤 Process items in parallel	Output: A, B, C (in any order)
parallel echo {} ::: *.txt	🔍 Use {} as placeholder	Echoes names of all .txt files
cat file.txt | parallel echo	📥 Read input from stdin	Processes each line of file.txt
parallel -j4 command ::: item1 item2 item3	🔢 Limit to 4 jobs at a time	Runs 'command' on items, max 4 parallel

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🔗 Bash Command Chaining Mastery: The Ultimate Cheat Sheet

🔗 Basic Command Chaining

Operator	Description	Example
;	📊 Run commands sequentially	echo "Hello"; echo "World"
&&	✅ Run next command only if previous succeeds	mkdir dir && cd dir
||	❌ Run next command only if previous fails	ping -c1 google.com || echo "Offline"
|	🚿 Pipe output of one command to another	ls -l | grep ".txt"

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🔐 SSH Mastery: The Ultimate Guide

🌟 Basic SSH Commands

Command	Description
ssh user@hostname	🔌 Connect to a remote host
ssh -p 2222 user@hostname	🔢 Connect using a specific port
ssh -i ~/.ssh/id_rsa user@hostname	🔑 Connect using a specific identity file
exit or logout	👋 Terminate the SSH session

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🚀 Ultimate Linux Terminal Tricks Cheatsheet

🧭 Navigation Ninja

Command	Description
cd -	🔙 Teleport to previous directory
pushd <dir>	📚 Change directory, save current to stack
popd	📚 Return to most recently pushed directory
cd ~	🏠 Go to home directory

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name: Mark stale pull requests in Shepherd repo

on:
  schedule:
  - cron: '0 0 * * 1'  # Runs every Monday at midnight

jobs:
  stale:
    runs-on: ubuntu-latest
    timeout-minutes: 5

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abPjZb

A Pen by Celine on CodePen.

License.

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<header class="header">
  <a href="" class="logo">CSS Nav</a>
  <input class="menu-btn" type="checkbox" id="menu-btn" />
  <label class="menu-icon" for="menu-btn"><span class="navicon"></span></label>
  <ul class="menu">
    <li><a href="#work">Our Work</a></li>
    <li><a href="#about">About</a></li>
    <li><a href="#careers">Careers</a></li>
    <li><a href="#contact">Contact</a></li>
  </ul>

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def search_file(term, fname):
    with open(fname, "r") as filein:
        content = filein.read()
    if term in content:
        return True
    else:
        return False


def term_check():

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((?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)?|May|Jun(?:e)?|Jul(?:y)?|Aug(?:ust)?|Sep(?:tember)?|Sept|Oct(?:ober)?|Nov(?:ember)?|Dec(?:ember)?) \s\d\s\d{1,2}:\d{1,2}:\d{1,2}\s)(did\d+)\s(inbound\[\d+\]):\s(FAX/VOICE):\s(service=\w+),\s(to=\w+),\s(utime=\d+),\s(page_cnt=\d+),\s(mode=\w+:\d+),\s(contact_ip=\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}),\s(vchan=\d+),\s(session=\d+),\s(res=\d+),\s(bps=\d+),\s(dur=\d+),\s(size=\d+),\s(skey=\d+),\s(ckey=\d+),\s(csid=\w+|\d+),\s(j2num=\w+|\d+),\s(did=\d+),\s(email=\d+@\w+.\w+.\w+.\w+\|2),\s+(msgid=)<(\w+-\d+-\d+-\d+)>,\s