大约有 47,000 项符合查询结果（耗时：0.0653秒） [XML]
Is there a way for non-root processes to bind to “privileged” ports on Linux?
...re going to use capabilities in a production environment. There are some really tricky details of how capabilities are inherited across exec() calls that are detailed here.
setcap man page
"Bind ports below 1024 without root on GNU/Linux": The document that first pointed me towards setcap.
Note: R...
“Inspect” a hover element?
...
If the hover effect is given with CSS then yes, I normally use two options to get this:
One, to see the hover effect when the mouse leave the hover area:
Open the inspector in docked window and increase the width until reach your HTML element, then right click and the popup men...
Lists in ConfigParser
...
It's awesome because it does automatically "cast" values which can be useful if you don't know the types beforehand.
– LeGBT
Oct 26 '14 at 21:26
...
Undefined reference to static constexpr char[]
...he same semantics as a function declared inline: it can be defined, identically, in
multiple translation units, must be defined in every translation unit in which it is odr-used, and
the behavior of the program is as if there is exactly one variable.
and modified [basic.def]p2:
A declar...
What should I do when 'svn cleanup' fails?
...
When starting all over is not an option...
I deleted the log file in the .svn directory (I also deleted the offending file in .svn/props-base), did a cleanup, and resumed my update.
...
How can I ssh directly to a particular directory?
...right on the directory_wanted.
Explanation
-t Force pseudo-terminal allocation. This can be used to execute arbitrary screen-based programs on a remote machine, which can be very useful, e.g. when implementing menu services.
Multiple -t options force tty allocation, even if ssh has no l...
Why do you need ./ (dot-slash) before executable or script name to run it in bash?
...
Because on Unix, usually, the current directory is not in $PATH.
When you type a command the shell looks up a list of directories, as specified by the PATH variable. The current directory is not in that list.
The reason for not having the curr...
How to prevent buttons from submitting forms
...just plain idiotic, and a huge mistake in the spec. I use buttons in forms all the time, and even if it were an edge case (which it isn't), it'd still make sense to have the default type be submit.
– dudewad
Oct 27 '15 at 22:54
...
How to draw a dotted line with css?
... lot of cruft that is no longer required for modern browsers. I have personally tested the following CSS on all browsers as far back as IE8, and it works perfectly.
hr {
border: none;
border-top: 1px dotted black;
}
border: none must come first, to remove all the default border styling...
What's the “Content-Length” field in HTTP header?
... Combine this answer with the answer from Tom Cabanski and you have all the information you need. In case of text you can count the number of characters since ASCII is 8 bit.
– hcpl
Sep 24 '12 at 8:45
...