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How do you use the “WITH” clause in MySQL?
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140
MySQL prior to version 8.0 doesn't support the WITH clause (CTE in SQL Server parlance; Subquery...
How to create a bash script to check the SSH connection?
...h -q user@downhost exit
$ echo $?
255
$ ssh -q user@uphost exit
$ echo $?
0
EDIT: Another approach would be to use nmap (you won't need to have keys or login-stuff):
$ a=`nmap uphost -PN -p ssh | grep open`
$ b=`nmap downhost -PN -p ssh | grep open`
$ echo $a
22/tcp open ssh
$ echo $b
(empty st...
How to TryParse for Enum value?
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answered Jul 4 '09 at 18:19
Victor Arndt MuellerVictor Arndt Mueller
41333 silver badges66 bronze badges
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What does an underscore in front of an import statement mean?
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230
Short answer:
It's for importing a package solely for its side-effects.
From the Go Specificatio...
How do I find the location of the executable in C? [duplicate]
...fsize) (Solaris)
On Unixes without /proc (i.e. if above fails):
If argv[0] starts with "/" (absolute path) this is the path.
Otherwise if argv[0] contains "/" (relative path) append it to cwd
(assuming it hasn't been changed yet).
Otherwise search directories in $PATH for executable argv[0].
Af...
Check for changes to an SQL Server table?
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answered Aug 2 '08 at 5:20
Jon GallowayJon Galloway
49k2424 gold badges118118 silver badges191191 bronze badges
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I don't understand -Wl,-rpath -Wl,
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answered Jul 3 '11 at 10:47
Kerrek SBKerrek SB
415k7676 gold badges781781 silver badges10021002 bronze badges
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Inner text shadow with CSS
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105
Here's a little trick I discovered using the :before and :after pseudo-elements:
.depth {
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git stash blunder: git stash pop and ended up with merge conflicts
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered May 15 '10 at 16:56
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Will GetType() return the most derived type when called from the base class?
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answered Apr 25 '11 at 16:40
Reed CopseyReed Copsey
509k6868 gold badges10671067 silver badges13241324 bronze badges
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