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How can I check if a command exists in a shell script? [duplicate]
I am writing my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists?
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Can I squash commits in Mercurial?
I have a pair of commits that should really be just one. If I was using git, I would use:
8 Answers
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How to add JTable in JPanel with null layout?
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Nested/Combination Layout Example
The Java Tutorial has comprehensive information on using layout managers. See the Laying Out Components Within a Container lesson for further details.
One aspect of layouts that is not covered well by the tutorial is that of nested layouts, putting one layout in...
Detecting input change in jQuery?
When using jquery .change on an input the event will only be fired when the input loses focus
8 Answers
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Git on Bitbucket: Always asked for password, even after uploading my public SSH key
...to Bitbucket's SSH keys as explained , but Git still asks me for my password at every operation (such as git pull ). Did I miss something?
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Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)
... (runs fine locally) - but I am unable to deploy it via heroku (first time w/ heroku as well). The code is below. SO doesn't let me write so much code, so I would just say that the running the code locally as well within my network shows no issue.
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Android - border for button
... a border to a button? Is it possible to do this without resorting to use of images?
8 Answers
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How to put a delay on AngularJS instant search?
... issue that I can't seem to address. I have an instant search but it's somewhat laggy, since it starts searching on each keyup() .
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How can I access “static” class variables within class methods in Python?
If I have the following python code:
5 Answers
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What does FETCH_HEAD in Git mean?
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FETCH_HEAD is a short-lived ref, to keep track of what has just been fetched from the remote repository. git pull first invokes git fetch, in normal cases fetching a branch from the remote; FETCH_HEAD points to the tip of thi...