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How to find patterns across multiple lines using grep?
...P Use perl compatible regular expressions (PCRE).
-z Treat the input as a set of lines, each terminated by a zero byte instead of a newline. i.e. grep treats the input as a one big line.
-l list matching filenames only.
(?s) activate PCRE_DOTALL, which means that '.' finds any character or newlin...
Check free disk space for current partition in bash
...;>$MAILMESSAGE
# sending email (need to have an email client set up or sendmail)
$MAILCMD -s "Urgent MAIL Alert For $(hostname) AWS Server" "$EMAILIDS" < $MAILMESSAGE
[[ -f $MAILMESSAGE ]] && rm -f $MAILMESSAGE
}
# ---------------------------------...
Javascript what is property in hasOwnProperty?
...hasOwnProperty returns true only for the properties that were specifically set in the constructor, or added to the instance later.
to determine if p is defined at all, anywhere, for the object, use if(p instanceof object), where p evaluates to a property-name string.
For example, by default all o...
Is there any way to ignore INSTALL_FAILED_VERSION_DOWNGRADE on application install with the Android
...ht now. In either case, uninstall the currently installed copy, or open up Settings > Apps to determine the version number for the installed app, and increment your versionCode to be higher in the AndroidManifest.
share
...
How to enable/disable bluetooth programmatically in android
...ng the return values of enable()\disable() methods:
public static boolean setBluetooth(boolean enable) {
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
boolean isEnabled = bluetoothAdapter.isEnabled();
if (enable && !isEnabled) {
return bluetoo...
inject bean reference into a Quartz job in Spring?
...ent AutowireCapableBeanFactory beanFactory;
@Override
public void setApplicationContext(final ApplicationContext context) {
beanFactory = context.getAutowireCapableBeanFactory();
}
@Override
protected Object createJobInstance(final TriggerFiredBundle bundle) throws Exce...
Is it possible to stop JavaScript execution? [duplicate]
...
Note: All remaining asynchronous functions like setTimeout or XMLHttpRequest will still execute. Currently there is no standard way to completely terminate JavaScript.
– Derek 朕會功夫
Jul 17 '13 at 22:01
...
What Process is using all of my disk IO
... do so. Else this might help.
Use top, then use these shortcuts:
d 1 = set refresh time from 3 to 1 second
1 = show stats for each cpu, not cumulated
This has to show values > 1.0 wa for at least one core - if there are no diskwaits, there is simply no IO load and no need to look further...
Custom checkbox image android
...ve been looking for - I've figured out the whole state thing but I've been setting android:background instead of android:button and ended up with 2 buttons instead. Now it all works well.
– Artem Russakovskii
Nov 23 '10 at 23:07
...
Convert a byte array to integer in Java and vice versa
...ls the JVM to convert the signed byte into an integer with just those bits set. Otherwise the byte -1 (0xFF) will turn into the int -1 (0xFFFFFFFF). I could be wrong and even if I am it doesn't hurt and makes things clearer.
– coderforlife
Jul 29 '14 at 18:44
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