class: center, middle # Linux is your friend --- ## cd = change directory / pwd = print working directory <img height="250" align="center" src='data:image/svg+xml;base64,<!DOCTYPE svg  PUBLIC '-//W3C//DTD SVG 1.1//EN'  'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'><svg content="&lt;mxfile modified=&quot;2019-04-09T10:21:21.551Z&quot; host=&quot;www.draw.io&quot; agent=&quot;Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36&quot; etag=&quot;XXn83QWs74AgScZGBC33&quot; version=&quot;10.6.0&quot;&gt;&lt;diagram id=&quot;RBcOZOiITqol5o_CpkHC&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;" height="362px" style="background-color: rgb(255, 255, 255);" version="1.1" viewBox="-0.5 -0.5 721 362" width="721px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><defs/><g><path d="M 360 60 L 360 108.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 113.88 L 356.5 106.88 L 360 108.63 L 363.5 106.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 60 L 360 88 L 210 88 L 210 108.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 210 113.88 L 206.5 106.88 L 210 108.63 L 213.5 106.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 60 L 360 88 L 60 88 L 60 108.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 60 113.88 L 56.5 106.88 L 60 108.63 L 63.5 106.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 60 L 360 88 L 510 88 L 510 108.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 510 113.88 L 506.5 106.88 L 510 108.63 L 513.5 106.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 60 L 360 88 L 660 88 L 660 108.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 660 113.88 L 656.5 106.88 L 660 108.63 L 663.5 106.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="300" y="0"/><g transform="translate(356.5,18.5)"><switch><foreignObject height="22" pointer-events="all" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow:visible;" width="6"><div style="display: inline-block; font-size: 20px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; vertical-align: top; width: 6px; white-space: nowrap; overflow-wrap: normal; text-align: center;" xmlns="http://www.w3.org/1999/xhtml"><div style="display:inline-block;text-align:inherit;text-decoration:inherit;" xmlns="http://www.w3.org/1999/xhtml">/</div></div></foreignObject><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="3" y="21">/</text></switch></g><path d="M 360 175 L 360 195 L 360 180 L 360 193.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 198.88 L 356.5 191.88 L 360 193.63 L 363.5 191.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="300" y="115"/><g transform="translate(334.5,133.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="25" y="21">home</text></g><path d="M 360 260 L 360 281 L 240 281 L 240 294.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 240 299.88 L 236.5 292.88 L 240 294.63 L 243.5 292.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 360 260 L 360 281 L 480 281 L 480 294.63" fill="none" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><path d="M 480 299.88 L 476.5 292.88 L 480 294.63 L 483.5 292.88 Z" fill="#000000" pointer-events="none" stroke="#000000" stroke-miterlimit="10"/><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="300" y="200"/><g transform="translate(316.5,218.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="43" y="21">v.bezaras</text></g><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="180" y="301"/><g transform="translate(190.5,319.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="49" y="21">Downloads</text></g><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="150" y="115"/><g transform="translate(192.5,133.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="17" y="21">mnt</text></g><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="0" y="115"/><g transform="translate(46.5,133.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="13" y="21">etc</text></g><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="600" y="115"/><g transform="translate(645.5,133.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="14" y="21">var</text></g><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="450" y="115"/><g transform="translate(495.5,133.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="14" y="21">usr</text></g><rect fill="#ffffff" height="60" pointer-events="none" stroke="#000000" width="120" x="420" y="301"/><g transform="translate(443.5,319.5)"><text fill="#000000" font-family="Helvetica" font-size="20px" text-anchor="middle" x="36" y="21">Projects</text></g></g></svg>'> Examples: - pwd: <span class="console">/home/v.bezaras</span> - cd /home/v.bezaras/Projects - cd Projects - cd /home/v.bezaras/Downloads - cd . - cd ../Projects - pwd: <span class="console">/home/v.bezaras/Projects</span> - cd /mnt/c/users/vbyazarene/Documents/ --- ## ls = list Examples: - ls - ls -l - ls -lh - ls -l /home/v.bezaras - ls -l .. --- ## less / zless - less file.txt - zless file.txt.gz - less -N file.txt - with line numbers - less -S file.txt - no line breaks #### Commands during view: - q - quit - /text - search - n - next occurence - N - previous occurence --- ## grep = global regular expression print / zgrep Examples: - grep "word" file.txt - lines containing word - grep -v "word" file.txt - lines not containing word - grep -i "WORD" file.txt - ignore case #### Pipe: | program1 | program2 | program3 Example: ls -lh | grep M | less --- ## xmllint Examples: - xmllint --format file.xml | less - zless file.zip | xmllint --format - | less #### Output redirection: > - command > file.txt - xmllint --format file.xml > formatted.xml - xmllint --format file.xml > /home/v.bezaras/Projects/xmlfile.xml --- ## XPath Examples: - xmllint --xpath "//Hotel" file.xml - xmllint --xpath "//Hotel[@Code='123']" file.xml Syntax: - / - search directly under current node - // - search anywhere under current node - [] - condition (can be read as "which") - @ - attribute - . - current node - text() - node value Examples: - //Hotel - find everywhere all hotel nodes - //Hotel[@Code='123'] - find everywhere all hotels which has attribute code equals 123 - (echo "&lt;x>" && xmllint ... && echo "&lt;/x>") | xmllint --format - - xmllint --xpath "//ZUSCHLAEGE/ZUSCHLAG1/PREIS[text() < '10.00']" --- class: middle, center # End