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How can I add numbers in a Bash script?
I have this Bash script and I had a problem in line 16.
How can I take the previous result of line 15 and add
it to the variable in line 16?
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What does tree-ish mean in Git?
...ately leads to a (sub)directory
tree (Git refers to directories as "trees" and "tree objects").
In the original poster's case, foo is a directory that he wants to
specify. The correct way to specify a (sub)directory in Git is to use this
"tree-ish" syntax (item #15 from the Git revisions documentat...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
I was watching this , and, as you can see, the first command I am told to put in is:
5 Answers
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Test whether a glob has any matches in bash
...compgen -G "<glob-pattern>"
Escape the pattern or it'll get pre-expanded into matches.
Exit status is:
1 for no-match,
0 for 'one or more matches'
stdout is a list of files matching the glob.
I think this is the best option in terms of conciseness and minimizing potential side effect...
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
I had this question on an Algorithms test yesterday, and I can't figure out the answer. It is driving me absolutely crazy, because it was worth about 40 points. I figure that most of the class didn't solve it correctly, because I haven't come up with a solution in the past 24 hours.
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Check if directory mounted with bash
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Running the mount command without arguments will tell you the current mounts. From a shell script, you can check for the mount point with grep and an if-statement:
if mount | grep /mnt/md0 > /dev/null; then
echo "yay"
else
echo "nay"
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android get real path by Uri.getPath()
...ssary for you to get a physical path?
For example, ImageView.setImageURI() and ContentResolver.openInputStream() allow you to access the contents of a file without knowing its real path.
share
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imp...
Replace duplicate spaces with a single space in T-SQL
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If you want to remove the spaces at the front and end of the string, then wrap the replace in an LTRIM, RTRIM and it will do it for you.
– Neil Knight
Mar 16 '10 at 15:54
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CSS: how do I create a gap between rows in a table?
...;
border-spacing: 0 1em;
}
That assumes you want a 1em vertical gap, and no horizontal gap. If you're doing this, you should probably also look at controlling your line-height.
Sort of weird that some of the answers people gave involve border-collapse: collapse, whose effect is the exact opp...
How to find the foreach index?
...312,'sasas'); unset($a[3]); foreach ($a as $k=>$v) print "\$k= $k and \$v = $v"; ?>
– Milen A. Radev
Sep 27 '08 at 0:21
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