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What's the opposite of head? I want all but the first N lines of a file
Given a text file of unknown length, how can I read, for example all but the first 2 lines of the file? I know tail will give me the last N lines, but I don't know what N is ahead of time.
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How do I raise the same Exception with a custom message in Python?
... error message (it could be an int, or it could be a string representing a file name).
– Trent
Nov 1 '13 at 5:29
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Fastest way to extract frames using ffmpeg?
..., you could always store the frames uncompressed as BMP images:
ffmpeg -i file.mpg -r 1/1 $filename%03d.bmp
This also has the advantage of not incurring more quality loss through quantization by transcoding to JPEG. (PNG is also lossless but tends to take much longer than JPEG to encode.)
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Building and running app via Gradle and Android Studio is slower than via Eclipse
...sure you are using latest Gradle and Android Gradle Plugin.
Configuration File
Create a file named gradle.properties in whatever directory applies:
/home/<username>/.gradle/ (Linux)
/Users/<username>/.gradle/ (Mac)
C:\Users\<username>\.gradle (Windows)
Append:
# IDE (e.g. ...
How do I daemonize an arbitrary script in unix?
...>script.out 2>script.error&
This will send standard out to the file of your choice and standard error to a different file of your choice. If you want to use just one file for both standard out and standard error you can us this:
nohup yourScript.sh script args >script.out 2>&1...
What are the most useful Intellij IDEA keyboard shortcuts? [closed]
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Go to Class, to quickly open any class in the editor:
Ctrl+N
To open any file, not just classes:
Ctrl+Shift+N
Comment/Uncomment current line or selection:
Ctrl+/ and Ctrl+Shift+/
Quick JavaDoc Popup to show the JavaDoc of the method or class at the text cursor:
Ctrl+Q (Ctrl+J on Mac OS X)
Smart...
How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?
... physical assembly's version to the assembly version stored in the .csproj file for the assembly reference
If the two assembly versions are exactly the same, the resolution process succeeds and the physical assembly found is used for the build
If the two assembly versions do not match, the physical ...
find without recursion
... command line arguments.
Your options basically are:
# Do NOT show hidden files (beginning with ".", i.e., .*):
find DirsRoot/* -maxdepth 0 -type f
Or:
# DO show hidden files:
find DirsRoot/ -maxdepth 1 -type f
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What's the best visual merge tool for Git? [closed]
...w for every hunk in meld. Also, being able to merge into a specific output file rather than edit the input files in place is invaluable for backing out of failed nerges.
– Mark Booth
Mar 2 '11 at 18:51
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Getting “cannot find Symbol” in Java project in Intellij
...on mac) fixed it. It seems the compile on save does not 'see' non-compiled files.
Marking the src folder as source did not help in my case.
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