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Cron job every three days
Is it possible to run a cronjob every three days? Or maybe 10 times/month.
11 Answers
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How do I use extern to share variables between source files?
I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope?
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Is it possible to get CMake to build both a static and shared version of the same library?
...probably give each library a different name, since there is a ".lib" file for both shared and static. But on Linux and Mac you can even give both libraries the same name (e.g. libMyLib.a and libMyLib.so):
set_target_properties(MyLibStatic PROPERTIES OUTPUT_NAME MyLib)
But I don't recommend givin...
How do I iterate over an NSArray?
I'm looking for the standard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
8 Answers
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Force git stash to overwrite added files
...n git. I made some changes and wanted to commit them, but realised I had forgotten to check in the unmodified files first. So I stashed the files, then added the unmodified versions.
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How can I list (ls) the 5 last modified files in a directory?
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Try using head or tail. If you want the 5 most-recently modified files:
ls -1t | head -5
The -1 (that's a one) says one file per line and the head says take the first 5 entries.
If you want the last 5 try
ls -1t | tail -5
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hash function for string
I'm working on hash table in C language and I'm testing hash function for string.
9 Answers
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How to see top processes sorted by actual memory usage?
I have a server with 12G of memory. A fragment of top is shown below:
12 Answers
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Ruby max integer
... be able to determine a systems maximum integer in Ruby. Anybody know how, or if it's possible?
6 Answers
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What is a .pid file and what does it contain?
I recently come across a file with the extension .pid and explored inside it but didn't find much. The documentation says:
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