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getenv() vs. $_ENV in PHP
...EnvironmentVariableA.
If on non-Windows, from the getenv function provided by libc.
As far as I can tell, the only time when it will behave in a case-insensitive manner is on Windows because that's how the Windows environment variable API behaves. If you're on Linux, BSD, Mac, etc then getenv is s...
DESTDIR and PREFIX of make
...ocal/stow/foo
, which would install binaries in /usr/local/stow/foo/bin. By comparison,
make install DESTDIR=/usr/local/stow/foo
would install binaries in /usr/local/stow/foo/usr/local/bin.
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Hour from DateTime? in 24 hours format
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How to vertical align an inline-block in a line of text?
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sqlite alter table add MULTIPLE columns in a single statement
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Regex to match any character including new lines
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In Ruby, the modifier is m, not s. See: rubular.com
– Jon Schneider
Jan 13 at 23:17
add a comment
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Python pandas Filtering out nan from a data selection of a column of strings
Without using groupby how would I filter out data without NaN ?
4 Answers
4
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How do you use window.postMessage across domains?
...t have to be the same domains, but B must know exactly what domain is used by A.
– Greg Bogumil
Apr 8 '15 at 14:31
7
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How do I get cURL to not show the progress bar?
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by the way, see below link about 2>/dev/null if you don't know: stackoverflow.com/questions/10508843/what-is-dev-null-21
– kenju
Aug 23 '15 at 4:24
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Bash: If/Else statement in one line
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&& means "and if successful"; by placing your if statement on the right-hand side of it, you ensure that it will only run if grep returns 0. To fix it, use ; instead:
ps aux | grep some_proces[s] > /tmp/test.txt ; if [ $? -eq 0 ]; then echo 1; else...