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How can I replace a newline (\n) using sed?
...erminating newline, puts what is left into the pattern space where
the sed script can address or change it, and when the pattern space
is printed, appends a newline to stdout (or to a file). If the
pattern space is entirely or partially deleted with 'd' or 'D', the
newline is not added in such cases...
Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?
...< or > to do anything dangerous. Our attack vector could just be javascript:alert(document.cookie)
Now resultant HTML looks like
<img src= "javascript:alert(document.cookie)" />
The attack gets straight through.
It gets worse. Why? because htmlspecialchars (when called this way) on...
What does “&” at the end of a linux command mean?
I am a system administrator and I have been asked to run a linux script to clean the system.
4 Answers
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How to hide command output in Bash
I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is executing commands?
7 A...
jQuery and AJAX response header
... it in an iframe, but when I try to view the header info with a javascript alert, it comes up null, even though firebug sees it correctly.
...
Simple (non-secure) hash function for JavaScript? [duplicate]
..., not hundreds of lines) hash function written in (browser-compatible) JavaScript? Ideally I'd like something that, when passed a string as input, produces something similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have to be cryptographically ...
Is using 'var' to declare variables optional? [duplicate]
...he differences:
external = 5;
function firsttry() {
var external = 6;
alert("first Try: " + external);
}
function secondtry() {
external = 7;
alert("second Try: " + external);
}
alert(external); // Prints 5
firsttry(); // Prints 6
alert(external); // Prints 5
secondtry(); // Prints 7
aler...
Is there a way to use shell_exec without waiting for the command to complete?
...
I usually get PID of running script by adding echo $! >> /tmp/pid.txt at the end of exec command but by redirecting output & error to /dev/null, no more pid file : does any of you can get PID of script launched by exec while not waiting for ou...
Match two strings in one line with grep
...be used in "one liner" syntax that are embed dibble into an existing shell script.
– Scott Prive
Nov 28 '14 at 15:06
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Assigning default values to shell variables with a single command in bash
I have a whole bunch of tests on variables in a bash (3.00) shell script where if the variable is not set, then it assigns a default, e.g.:
...