Unix: the power of simple tools.
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| Author | Content |
|---|---|
| dinotrac Jul 08, 2012 4:00 PM EDT |
I've had tech interviews where people who should know better were floored by my unix utility approach to solving some of the problems they posed (as opposed, say, to writing a ruby/java/what have you program). So ... cat file1 file2 file3 | sort > sorted_file cat file1 file2 file 3 | sort | uniq > sorted_file_no_dupes And we haven't even tried to do any sed or awk magic. |
| gus3 Jul 08, 2012 6:08 PM EDT |
If those files are really, really big, you can do: cat file1 file2 file 3 | uniq | sort | uniq > sorted_file_no_dupes to strip out the dupes before sorting. |
| BernardSwiss Jul 08, 2012 6:51 PM EDT |
What blew my mind was how often that works for video files. |
| notbob Jul 08, 2012 7:02 PM EDT |
What blew my mind is how little it takes to be published on LXer. Apparently, I can start a blog, write an entry stating: Is The Linux Desktop Dead? The term command to list files is ls. Example: $ ls /dir_name Who knew! ;) nb |
| tracyanne Jul 08, 2012 7:07 PM EDT |
Quoting:What blew my mind is how little it takes to be published on LXer. Yes it's great isn't it. |
| dinotrac Jul 08, 2012 7:45 PM EDT |
@gus3 -- Careful with that... That first uniq is only going to get the dupes that can be found without sorting. You're as likely to increase your overall execution time as to decrease it. Maybe moreso, depending on the size of the files and how sorted they are or are not. |
| caitlyn Jul 09, 2012 11:06 PM EDT |
Wait till you give an example with xargs in an interview. That floors people every time. P.S.: xargs is your friend. |
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