longbelly
BAN USER- 2of 2 votes
AnswersYou are trying to to daemonize an unknown, black-box binary executable. The binary executable returns no output to STDOUT or STDERR. Assume that the mystery binary return code is non-zero. What troubleshooting steps might you take to learn more about what the binary is supposed to do, and why it is failing?
- longbelly in United States| Report Duplicate | Flag | PURGE
Google Site Reliability Engineer Unix
1. Knowing that the binary does not log to STDOUT or STDERR, you can assume you're debugging on a UNIX-like system. Where might you find the 'system level logs' on the filesystem?
2. Assume that the binary does not have debug flags or a debug version.
3. What command can you run to determine which system level library the blackbox binary is using?
4. What command can you run that would dump the execution sequence?
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@peter159 the point of the question is to see how much you know about a computer. The goal is not to work around the question with rhetoric, but rather to prove you know something about the topic at hand.
- longbelly April 26, 2013