BEAUTY AND PLAY
$kill -l 1) SIGHUP 2) SIGINT 3) SIGQUIT 4) SIGILL 5) SIGTRAP 6) SIGABRT 7) SIGBUS 8) SIGFPE 9) SIGKILL 10) SIGUSR1 11) SIGSEGV 12) SIGUSR2 13) SIGPIPE 14) SIGALRM 15) SIGTERM 16) SIGSTKFLT 17) SIGCHLD 18) SIGCONT 19) SIGSTOP 20) SIGTSTP 21) SIGTTIN 22) SIGTTOU 23) SIGURG 24) SIGXCPU 25) SIGXFSZ 26) SIGVTALRM 27) …
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ABOUT df df (abbreviation for disk free) is a standard Unix command used to display the amount of available disk space for file systems on which the invoking user has appropriate read access. df is typically implemented using the statfs or statvfs system calls. [bash] $df Filesystem 1K-blocks Used Available Use% Mounted on udev 1921644 …
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$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)
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