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Can't find the 'libpq-fe.h header when trying to install pg gem
I am using the Ruby on Rails 3.1 pre version. I like to use PostgreSQL, but the problem is installing the pg gem. It gives me the following error:
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How do I use su to execute the rest of the bash script as that user?
... to use "sudo" command instead of "su"
You may need to add this
username1 ALL=(username2) NOPASSWD: /path/to/svn
to your /etc/sudoers file
and change your script to:
sudo -u username2 -H sh -c "cd /home/$USERNAME/$PROJECT; svn update"
Where username2 is the user you want to run the SVN com...
How to customize an end time for a YouTube video?
...end_at_second]
Note: the time must be an integer number of seconds (e.g. 119, not 1m59s).
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How to use mod operator in bash?
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241
Try the following:
for i in {1..600}; do echo wget http://example.com/search/link$(($i % 5)); ...
How to git commit a single file/directory
...icit, git commit -m 'my notes' -- path/to/my/file.ext.
Incidentally, git v1.5.2.1 is 4.5 years old. You may want to update to a newer version (1.7.8.3 is the current release).
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WPF Auto height in code
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146
Perhaps this link will help you.
At times, you may want to
programmatically set the Height or...
Parallel.ForEach vs Task.Run and Task.WhenAll
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163
In this case, the second method will asynchronously wait for the tasks to complete instead of ...
How to check that a string is a palindrome using regular expressions?
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Array.Add vs +=
...s you should try to add them in as few operations as possible, ex:
$arr = 1..3 #Array
$arr += (4..5) #Combine with another array in a single write-operation
$arr.Count
5
If that's not possible, consider using a more efficient collection like List or ArrayList (see the other answer).
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