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What linux shell command returns a part of a string? [duplicate]
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In bash you can try this:
stringZ=abcABC123ABCabc
# 0123456789.....
# 0-based indexing.
echo ${stringZ:0:2} # prints ab
More samples in The Linux Documentation Project
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C# List of objects, how do I get the sum of a property
...0 times using solution above (myList.Sum) takes 2.44 seconds compared to 0.98 seconds using foreach. The elapsed time is measured using the Stopwatch class for accuracy. Therefore foreach is over 2x faster than using myList.Sum.
– Joe Gayetty
Nov 11 '16 at 15:2...
Which selector do I need to select an option by its text?
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Doesn't this also grab an option with 123abcdef?
– Teepeemm
Mar 6 '18 at 14:26
@T...
Is there a valid reason for enforcing a maximum width of 80 characters in a code file, this day and
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@sola Your comment appears here with 98 chars, and it is a dense natural non-native language (to me) to understand. Completely legible. A code with until 3-4 indents, syntax markers etc. is even easier.
– viyps
Jun 3 at 23:...
Read/write files within a Linux kernel module
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You should be aware that you should avoid file I/O from within Linux kernel when possible. The...
How to “grep” for a filename instead of the contents of a file?
... giving you not only file names. but if a path has a directory ('/xyz_test_123/other.txt') would also comes to the result set.
cheers
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Rename a dictionary key
...n entirely new one using a comprehension.
>>> OrderedDict(zip('123', 'abc'))
OrderedDict([('1', 'a'), ('2', 'b'), ('3', 'c')])
>>> oldkey, newkey = '2', 'potato'
>>> OrderedDict((newkey if k == oldkey else k, v) for k, v in _.viewitems())
OrderedDict([('1', 'a'), ('pota...
Where is Java Installed on Mac OS X?
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You could use echo $(/usr/libexec/java_home) command in your terminal to know the path where J...
How do I fix “Failed to sync vcpu reg” error?
...BI=x86, and I was running on a macbook pro.
– guyland123
Nov 20 '15 at 13:45
3
this is really a p...
Maven2: Best practice for Enterprise Project (EAR file)
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I found my own answer a year later when I had the same question. Good job self!
– Mike Cornell
Jul ...