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extract part of a string using bash/cut/split
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This answer helped me achieve what I came here for. There a no accepted answers and this one gets my vote for simplicity.
– harperville
Jul 21 '14 at 15:08
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How to find list intersection?
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what if a = [1,1,2,3,4,5] and b = [1,1,3,5,6] then the intersection is [1,1,3,5] but by above method it will result in only one 1 i.e. [1, 3, 5] what will be the write way to do it then?
– Nitish Kumar P...
How can I escape a double quote inside double quotes?
...<"$b" #\0 is a special sed operator
Just another "0" here #this is not what i wanted to be
$ sed 's/text/\x22\x27\0\x27\x22/' <<<"$b"
Just another "'text'" here #now we are talking. You would normally need a dozen of backslashes to achieve the same result in the normal way.
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Constants in Objective-C
...and [NSString stringWithFormat:MyFirstConstant]. Make no assumptions about what instance of a string you have, even with literals. (In any case, #define is a "preprocessor directive", and is substituted before compilation, so either way the compiler sees a string literal in the end.)
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Pro JavaScript programmer interview questions (with answers) [closed]
What are good questions to determine if applicant is really a pro JavaScript (browser side) developer ?
8 Answers
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Can an Option in a Select tag carry multiple values?
... @fotanus: My second example is a JSON object literal no different from what the other question proposes. As for the array, it's just an example. It's the responsibility of the server-side code to sanitize input values anyway.
– Robusto
Aug 27 '13 at 19:43
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Select random lines from a file
...u can keep some lines in memory with shuffle to do the random selection of what to output. Sort is going to sort the entire file, regardless of what your needs are.
– Rubens
Sep 25 '14 at 2:01
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Test if a variable is set in bash when using “set -o nounset”
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#!/bin/bash
set -o nounset
VALUE=${WHATEVER:-}
if [ ! -z ${VALUE} ];
then echo "yo"
fi
echo "whatever"
In this case, VALUE ends up being an empty string if WHATEVER is not set. We're using the {parameter:-word} expansion, which you can look up in man bash...
NGINX to reverse proxy websockets AND enable SSL (wss://)?
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Where should I put this configuration and what is backend_host ?
– Aysennoussi
May 21 '14 at 21:08
3
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How can I pass arguments to a batch file?
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Here's how I did it:
@fake-command /u %1 /p %2
Here's what the command looks like:
test.cmd admin P@55w0rd > test-log.txt
The %1 applies to the first parameter the %2 (and here's the tricky part) applies to the second. You can have up to 9 parameters passed in this way.
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