BEAUTY AND PLAY
$cd test-folder/ $>1 $>2 $>3 $ls 1 2 3 $cd .. $>1 $>2 $cp -b 1 test-folder/ $cd test-folder/ $ls 1 1~ 2 3 $cd .. $export SIMPLE_BACKUP_SUFFIX=bc $cp -b 2 test-folder/ $cd test-folder/ $ls 1 1~ 2 2bc 3 $cd .. $export SIMPLE_BACKUP_SUFFIX=.bc $cp -b 2 test-folder/ $cd test-folder/ $ls 1 1~ 2 2bc …
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$printenv > /dev/null $echo $? 0 $printenv /dev/null $echo $? 1 $/dev/null bash: /dev/null: Permission denied $echo $? 126 $nocommand bash: nocommand: command not found… $ $echo $? 127 $ http://www.tldp.org/LDP/abs/html/exitcodes.html
$echo “hello” > –test $cat –test cat: unrecognized option ‘–test’ Try ‘cat –help’ for more information. $cat — –test hello $
<!DOCTYPE html> <html lang=”en”> <head> <title>Chapter 2, Example 1</title> </head> <body> <script> var myFirstVariable; myFirstVariable = “Hello”; alert(myFirstVariable); myFirstVariable = 54321; alert(myFirstVariable); </script> </body> </html> Key source : Beginning JavaScript, 5th Edition (wrox)
<!DOCTYPE html> <html lang=”en”> <head> <meta charset=”utf-8″ /> <title>Chapter 1, Example 3</title> </head> <body> <code id=”results”></code> <script> document.getElementById(“results”).innerHTML = “Hello World!”; </script> </body> </html> Key source : Beginning JavaScript, 5th Edition (wrox)
<!DOCTYPE html> <html lang=”en”> <head> <meta charset=”utf-8″ /> <title>Chapter 1, Example 2</title> </head> <body bgcolor=”white”> <p>Paragraph 1</p> <script> // script block 1 alert(“First Script Block”); </script> <p>Paragraph 2</p> <script> // script block 2 document.bgColor = “red”; alert(“Second Script Block”); </script> <p>Paragraph 3</p> </body> </html> Key source : Beginning JavaScript, 5th Edition (wrox)
<!DOCTYPE html> <html lang=”en”> <head> <meta charset=”utf-8″ /> <title>Chapter 1, Example 1</title> </head> <body bgcolor=”white”> <p>Paragraph 1</p> <script> document.bgColor = “blue”; </script> </body> </html> Key source : Beginning JavaScript, 5th Edition (wrox)
background-color:#c00
$hostid 007f0101 $ https://en.wikipedia.org/wiki/Namespace http://www.computerhope.com/unix/hostid.htm May be some programs need a numeric value to identify the host and that may be the cause of having numeric identifier apart from the name given in the hostname.
$gdb /bin/ls GNU gdb (Debian 7.11.1-2) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type “show copying” and “show warranty” for details. This GDB was …
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