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How to make “if not true condition”?
I would like to have the echo command executed when cat /etc/passwd | grep "sysa" is not true.
6 Answers
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Are there any coding standards for JavaScript? [closed]
What are the established coding standards for JavaScript?
8 Answers
8
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How to build Qt for Visual Studio 2010
...t with Visual Studio 2010, so after collecting all the bits of information and some trial and error, I would like to write my solution into a guide.
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Getting Git to work with a proxy server - fails with “Request timed out”
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Command to use:
git config --global http.proxy http://proxyuser:proxypwd@proxy.server.com:8080
change proxyuser to your proxy user
change proxypwd to your proxy password
change proxy.server.com to the URL of your proxy server...
SVN checkout ignore folder
...rsion/project/trunk my_checkout --depth immediates
This will check files and directories from your project trunk into 'my_checkout', but not recurse into those directories. Eg:
$ cd my_checkout && ls
bar/ baz foo xyzzy/
Then to get the contents of 'bar' down:
$ cd bar && svn u...
Can javax.persistence.Query.getResultList() return null?
And if so, under what circumstances?
7 Answers
7
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What exactly do the Vagrant commands do?
There is surprisingly no documentation on what the Vagrant commands do, other than references throughout the "getting started" tutorial.
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Undo git pull, how to bring repos to old state
...do the merge step, but probably not the fetch (doesn't make a lot of sense and shouldn't be necessary).
To undo the merge, use git reset --hard to reset the local repository to a previous state; use git-reflog to find the SHA-1 of the previous state and then reset to it.
Warning
The commands li...
socket.error: [Errno 48] Address already in use
...module before, it is most likely that process still bound to the port. Try and locate the other process first:
$ ps -fA | grep python
501 81651 12648 0 9:53PM ttys000 0:00.16 python -m SimpleHTTPServer
The command arguments are included, so you can spot the one running SimpleHTTPServer if...
Why XML-Serializable class need a parameterless constructor
...e for de-serializing an object creates an instance of the serialized class and then proceeds to populate the serialized fields and properties only after acquiring an instance to populate.
You can make your constructor private or internal if you want, just so long as it's parameterless.
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