大约有 10,000 项符合查询结果（耗时：0.0268秒） [XML]
Can I set the height of a div based on a percentage-based width? [duplicate]
...hack (see the other answers), but it can also be done very easily with JavaScript.
Set the div's width to (for example) 50%, use JavaScript to check its width, and then set the height accordingly. Here's a code example using jQuery:
$(function() {
var div = $('#dynamicheight');
var w...
Read values into a shell variable from a pipe
...nything really clever with this sort of thing you're better going for some scripting language like perl where you could try something like this:
perl -ane 'print "$F[0]\n"' < myFile
There's a fairly steep learning curve with perl (or I guess any of these languages) but you'll find it a lot eas...
How to remove trailing whitespaces with sed?
I have a simple shell script that removes trailing whitespace from a file. Is there any way to make this script more compact (without creating a temporary file)?
...
Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
I have seen few py scripts which use this at the top of the script. In what cases one should use it?
4 Answers
...
How do I escape reserved words used as column names? MySQL/Create Table
... only MySQL specific queries are at the beginning and the end of your .sql script. If you what to ship them for a different server just remove these 3 queries and you're all set. Even more conveniently you could create a script named: script_mysql.sql that would contain the above mode setting querie...
How do I embed a single file from a GitHub gist with the new gist interface?
...ide and after the .js add a query string like ?file=myFile.blah, e.g.
<script src="https://gist.github.com/4505639.js?file=macroBuild.scala" type="text/javascript"></script>
share
|
im...
How to get the last character of a string in a shell?
...bbing before printing out. It is also better to quote the parameter to the script (in case you have a matching filename):
sh lash_ch.sh 'abcde*'
Also see the order of expansions in the bash reference manual. Variables are expanded before the filename expansion.
To get the last character you should ...
How to grep for two words existing on the same line? [duplicate]
...
Prescription
One simple rewrite of the command in the question is:
grep "word1" logs | grep "word2"
The first grep finds lines with 'word1' from the file 'logs' and then feeds those into the second grep which looks for lines...
Track all remote git branches as local branches
...
Thanks Otto, I suspected that scripting would be the only solution. You've provided a pretty simple one.
– Janson
Dec 20 '08 at 19:18
1...
How can I negate the return-value of a process?
...able answer — works with antique shells
In a Bourne (Korn, POSIX, Bash) script, I use:
if ...command and arguments...
then : it succeeded
else : it failed
fi
This is as portable as it gets. The 'command and arguments' can be a pipeline or other compound sequence of commands.
A not command
T...