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Sorting list based on values from another list?
...t should be: The list is ordered regarding the first element of the pairs, and the comprehension extracts the 'second' element of the pairs.
– MasterControlProgram
Oct 6 '17 at 14:31
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Best way to simulate “group by” from bash?
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And sort ip_addresses | uniq -c | sort -nr | awk '{ print $2, $1 }' to get the ip address in the first column and count in the second.
– Raghu Dodda
Sep 19 '16 at 22:25
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scp with port number specified
...lt
The lowercase p switch is used with scp for the preservation of times and modes.
Here is an excerpt from scp's man page with all of the details concerning the two switches, as well as an explanation of why uppercase P was chosen for scp:
-P port Specifies the port to connect to on the r...
How to execute a java .class from the command line
...classpath ( where java looks for .class definitions )
If that's the case and listing the contents of your dir displays:
Echo.java
Echo.class
Then any of this may work:
java -cp . Echo "hello"
or
SET CLASSPATH=%CLASSPATH;.
java Echo "hello"
And later as Fredrik points out you'll get an...
How does Apple know you are using private API?
...es the app has linked to. Something clearly you should not use, like IOKit and WebKit can be detected by this.
2. nm -u
This will list all linked symbols. This can detect
Undocumented C functions such as _UIImageWithName;
Objective-C classes such as UIProgressHUD
Ivars such as UITouch._phase (wh...
Div height 100% and expands to fit content
...The height of the body is also set to 100%. The inner div has a background and all that and is different from the body background. This works for making the div height 100% of the browser screen height, but the problem is I have content inside that div that extends vertically beyond the browser scre...
Use of alloc init instead of new
Learning Objective-C and reading sample code, I notice that objects are usually created using this method:
8 Answers
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How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...ll TTY devices but you might want to exclude those pesky virtual terminals and pseudo terminals. I suggest you examine only those which have a device/driver entry:
# ll /sys/class/tty/*/device/driver
lrwxrwxrwx 1 root root 0 2012-03-28 19:07 /sys/class/tty/ttyS0/device/driver -> ../../../bus/pnp...
Difference between onCreate() and onStart()? [duplicate]
I was wondering - what is the difference between onCreate() and onStart() methods?
2 Answers
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How to get folder path from file path with CMD
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For the folder name and drive, you can use:
echo %~dp0
You can get a lot more information using different modifiers:
%~I - expands %I removing any surrounding quotes (")
%~fI - expands %I to a fully qualified path name
%~dI ...