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What is the benefit of using $() instead of backticks in shell scripts?
...lt;<<\"$y\"`"
or writing something like:
IPs_inna_string=`awk "/\`cat /etc/myname\`/"'{print $1}' /etc/hosts`
because $() uses an entirely new context for quoting
which is not portable as Bourne and Korn shells would require these backslashes, while Bash and dash don't.
Syntax for nestin...
How to easily map c++ enums to strings
...o use it in your code, simply do:
AWESOME_MAKE_ENUM(Animal,
DOG,
CAT,
HORSE
);
auto dog = Animal::DOG;
std::cout<<dog;
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gitignore without binary files
... update your .gitignore with the following command which also removes duplicates and keeps alphabetic ordering intact.
T=$(mktemp); (cat .gitignore; find . -executable -type f | sed -e 's%^\./%%') | sort | uniq >$T; mv $T .gitignore
Note, that you cannot pipe output directly to .gitignore, bec...
Regular expression to find URLs within a string
...
This is the one I use
(http|ftp|https)://([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:/~+#-]*[\w@?^=%&/~+#-])?
Works for me, should work for you too.
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What is the difference between map and flatMap and a good use case for each?
... Yes - (but note that my informal notation was just meant to indicate a collection of some kind - in fact mapping split over a list of Strings will produce a List of Arrays)
– DNA
Aug 6 '16 at 22:06
...
An efficient compression algorithm for short text strings [closed]
...actual procotol (or use a table to get other common protocols, like https, ftp, file). The "://" can be dropped altogether, as long as you can mark the end of the protocol. Etc. Go read about URL format, and think on how they can be codified to take less space.
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目前只能使...
Shell command to tar directory excluding certain files/folders
...so I would like to add my try.
if you have the following structure
/home/ftp/mysite/
with following file/folders
/home/ftp/mysite/file1
/home/ftp/mysite/file2
/home/ftp/mysite/file3
/home/ftp/mysite/folder1
/home/ftp/mysite/folder2
/home/ftp/mysite/folder3
so, you want to make a tar file that...
Verify a certificate chain using openssl verify
I'm building a own certificate chain with following componenents:
7 Answers
7
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Rename a file in C#
...ode-time convenience... What kind of network? Windows shared folder (smb), ftp , ssh or whatever all have commands/primitives for file moving/renaming unless not permitted (e.g. read-only).
– Meow Cat 2012
Aug 27 '19 at 3:18
...