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sed beginner: changing all occurrences in a folder
...d file.
Notes:
The -i argument for sed command is a GNU extension, so, if you are running this command with the BSD's sed you will need to redirect the output to a new file then rename it.
The find utility does not implement the -exec argument in old UNIX boxes, so, you will need to use a | xarg...
Escaping keyword-like column names in Postgres
If the column in Postgres' table has the name year , how should look INSERT query to set the value for that column?
3 An...
How do I find where an exception was thrown in C++?
... seems illogical for a program compiled to contain debug symbols not to notify me of where in my code an exception was generated.
...
How to send only one UDP packet with netcat?
...
If you are using bash, you might as well write
echo -n "hello" >/dev/udp/localhost/8000
and avoid all the idiosyncrasies and incompatibilities of netcat.
This also works sending to other hosts, ex:
echo -n "hello" >...
jQuery - hashchange event
...
You can detect if the browser supports the event by:
if ("onhashchange" in window) {
//...
}
See also:
Detecting event support without browser sniffing
Emulating onhashchange without setInterval
window.onhashchange
...
Why is Linux called a monolithic kernel?
... communicate with the kernel, other services and user processes. In short, if it's a module in Linux, it's a service in a microkernel, indicating an isolated process.
Do not confuse the term modular kernel to be anything but monolithic. Some monolithic kernels can be compiled to be modular (e.g Lin...
How to get a thread and heap dump of a Java process on Windows that's not running in a console
...
You are confusing two different java dumps. kill -3 generates a thread dump, not a heap dump.
Thread dump = stack traces for each thread in the JVM output to stdout as text.
Heap dump = memory contents for the JVM process output to a binary file....
Display number with leading zeros
... @theta In 2.7.6, I don't get an error. Maybe this was a bug in a specific version of Python that they've since fixed?
– Jack M.
Apr 4 '14 at 14:51
3
...
Recover from git reset --hard?
...usly staged changes (git add) should be recoverable from index objects, so if you did, use git fsck --lost-found to locate the objects related to it. (This writes the objects to the .git/lost-found/ directory; from there you can use git show <filename> to see the contents of each file.)
If no...
How do you remove a Cookie in a Java Servlet
..., HttpServletResponse resp) {
Cookie[] cookies = req.getCookies();
if (cookies != null)
for (Cookie cookie : cookies) {
cookie.setValue("");
cookie.setPath("/");
cookie.setMaxAge(0);
resp.addCookie(cookie);
}
}
...