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How to make pipes work with Runtime.exec()?
...ic.com/display/SIGAR/Home
The simplest solution, however, (as pointed out by Kaj) is to execute the piped command as a string array. Here is the full code:
try {
String line;
String[] cmd = { "/bin/sh", "-c", "ps -ef | grep export" };
Process p = Runtime.getRuntime().exec(cmd);
Bu...
Remove 'a' from legend when using aesthetics and geom_text
How can I can remove the letter 'a' from the legend generated by this code? If I remove the geom_text , then the 'a' letter will not show in the legend. I want to keep geom_text , though.
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When to use Task.Delay, when to use Thread.Sleep?
... operations are quite heavy whereas the cooperative multi-tasking provided by Task.Delay etc is designed to avoid all of that overhead, maximize throughput, allow cancellation, and provide cleaner code.
– Corillian
May 3 '16 at 16:06
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I need an unordered list without any bullets
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You can remove bullets by setting the list-style-type to none on the CSS for the parent element (typically a <ul>), for example:
ul {
list-style-type: none;
}
You might also want to add padding: 0 and margin: 0 to that if you want to rem...
Clear android application user data
..., since it is store in private_mode. So executing this command could probalby only work on rooted devices. Otherwise you should try another approach.
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psql invalid command \N while restore sql
...ses "\N" as substitute symbol for NULL value. But all psql commands starts by backslash "\" symbol. So you can get this messages, when probably copy statement fails, but a loading of dump continues. This message is only false alarm. You have to search a lines before for reason why COPY statement fai...
Is element block level or inline level?
...since they do not have content per se, the element is essentially replaced by binary data.
* Note that browsers technically use display: inline (as seen in the developer tools) but they are giving special treatment to images. They still follow all traits of inline-block.
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Which one will execute faster, if (flag==0) or if (0==flag)?
...on how you've overloaded the operator == . Note that you've to overload == by defining two functions, one for each of your versions!
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在 App Inventor 2 中使用图像 · App Inventor 2 中文网
... try to run it, with an error message like:
Failed to allocate a 25165836 byte allocation with 3395432 free bytes and 3MB until OOM
What’s happening here is that the app is is running out of memory (OOM). In the case of the message above, the phone is trying to allocate 25 megabytes (25165836 b...
How to create a directory in Java?
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After ~7 year, I will update it to better approach which is suggested by Bozho.
new File("/path/directory").mkdirs();
Deprecated:
File theDir = new File("new folder");
// if the directory does not exist, create it
if (!theDir.exists()) {
System.out.println("creating directory: " + the...