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Find duplicate lines in a file and count how many time each line was duplicated?
...iq -c | grep -v '^ *1 '
For the given example, the result would be:
3 123
2 234
If you want to print counts for all lines including those that appear only once:
sort FILE | uniq -c
or, with GNU long options (on Linux):
sort FILE | uniq --count
For the given input, the output is:
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uint8_t can't be printed with cout
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It doesn't really print a blank, but most probably the ASCII character with value 5, which is non-printable (or invisible). There's a number of invisible ASCII character codes, most of them below value 32, which is the blank actually.
You have to convert aa to u...
How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X L
Since setting up my development environments on Mac OS X Lion (brand new macbook air purchased in January 2012), I have noticed that resolving to a virtual host is very slow (around 3 seconds) the first time but after that is fast as long as I continue loading it regularly.
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How do you remove all the options of a select box and then add one option and select it with jQuery?
.../attr/text like: .append($("<option></option>").attr("value", '123').text('ABC!')
– Brock Hensley
Jun 27 '13 at 21:58
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Can I change the height of an image in CSS :before/:after pseudo-elements?
...nswered Jan 23 '12 at 21:39
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How to write binary data to stdout in python 3?
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import os
os.write(1, a.tostring())
or, os.write(sys.stdout.fileno(), …) if that's more readable than 1 for you.
share
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impro...
How to make the hardware beep sound in Mac OS X 10.6
I just want that Mac OS X 10.6 does a hardware beep sound like in open suse and other distributions. I tried following approaches
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Subprocess changing directory
...change another process's working directory (again, at least on a UNIX-like OS, but as well on Windows), this call will have the subshell change its dir and exit immediately.
What you want can be achieved with os.chdir() or with the subprocess named parameter cwd which changes the working directory ...
Library not loaded: libmysqlclient.16.dylib error when trying to run 'rails server' on OS X 10.6 wit
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For those who are curious what's going on, this command makes a symbolic link from the second location to the first. When the gem looks for the MySQL client library under /usr/lib, that link will resolve to the location where it's ...
mysql error 1364 Field doesn't have a default values
...ERO,NO_AUTO_CREATE_USER,NO_ENGINE_UBSTITUTION'
– waza123
Oct 30 '17 at 17:55
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