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How do I read the first line of a file using cat?
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72
You don't, use head instead.
head -n 1 file.txt
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How to store printStackTrace into a string [duplicate]
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72
Guava makes this easy with Throwables.getStackTraceAsString(Throwable):
Exception e = ...
Stri...
Suggestions for debugging print stylesheets?
... as much control of the printed window as possible without using a HTML to PDF approach... Use @media screen to debug - @media print for final css
Modern browsers can give you a quick visual for what's going to happen at print time using inches and pts in a @media query.
@media screen and (max-wid...
Add line break within tooltips
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Just add a data attribute
data-html="true"
and you're good to go.
Eg. usage:
<i da...
AWS ssh access 'Permission denied (publickey)' issue [closed]
...yourdnsaddress]
for example:
ssh -v -i GSG_Keypair.pem ec2-user@ec2-184-72-204-112.compute-1.amazonaws.com
above example was taken directly from the AWS tutorial for connecting to a Linux/UNIX machine at:
http://docs.amazonwebservices.com/AWSEC2/latest/GettingStartedGuide/
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How do I choose between Tesseract and OpenCV? [closed]
...enCV:
https://github.com/tesseract-ocr/docs/blob/master/tesseracticdar2007.pdf
It highlights that "Since HP had independently-developed page layout analysis technology that was used in products, (and therefore not released for open-source) Tesseract never needed its own page layout analysis. Tesser...
What does `dword ptr` mean?
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The "d" in "dword" stands for "double". A word is 16 bits.
– JeremyP
Jun 7 '10 at 9:40
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How do you use the ? : (conditional) operator in JavaScript?
... specification: ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf
– ChaosPandion
Jun 7 '11 at 2:25
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Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
...ddr 64696f7e
r0 00000000 r1 00000001 r2 ad12d1e8 r3 7373654d
r4 64696f72 r5 00000406 r6 00974130 r7 40d14008
r8 4b857b88 r9 4685adb4 10 00974130 fp 4b857ed8
ip 00000000 sp 4b857b50 lr afd11108 pc ad115ebc cpsr 20000030
d0 4040000040000000 d1 0000004200000003
d2 4e72cd924285e37...
What does “Receiver type 'CALayer' for instance message is a forward declaration” mean here?
...oject to iOS5 and I'm having some troubles with ARC. The code generates a PDF from a screen capture.
1 Answer
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