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How to output only captured groups with sed?
...e output as well as specifying what you do want.
string='This is a sample 123 text and some 987 numbers'
echo "$string" | sed -rn 's/[^[:digit:]]*([[:digit:]]+)[^[:digit:]]+([[:digit:]]+)[^[:digit:]]*/\1 \2/p'
This says:
don't default to printing each line (-n)
exclude zero or more non-digits
i...
Zoom in on a point (using scale and translate)
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Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
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LaTeX Optional Arguments
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Example from the guide:
\newcommand{\example}[2][YYY]{Mandatory arg: #2;
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Alternative timestamping services for Authenticode
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I use the following batch file which loops a max of 300 times. There are two arguments, %1 is th...
How to set a Header field on POST a form?
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It cannot be done - AFAIK.
However you may use for example jquery (although you can do it with ...
Ignoring new fields on JSON objects using Jackson [duplicate]
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Difference between float and decimal data type
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How to get number of entries in a Lua table?
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132
You already have the solution in the question -- the only way is to iterate the whole table wi...
How to select multiple rows filled with constants?
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