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How to find the date format

 
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Top Forums UNIX for Dummies Questions & Answers How to find the date format
# 1  
Old 08-20-2012
How to find the date format
I have a requirement where the user send a file. If the file is empty they put datetimestamp(YYYYMMDDHH:MM:SS) otherwise they would be data.

I can do cat and get whats in file but how can I see if the data is date timestamp.

In short,

if format(data in file) = YYYYMMDDHH:MM:SS then 'false' else 'true'

how do i find format(data in file) = YYYYMMDDHH:MM:SS
# 2  
Old 08-20-2012
Show some of your input in code tags, please.
# 3  
Old 08-20-2012
there is a file on server

/a/abc.txt

the data in abc.txt is

Code:
2012081503:44:54

if the data is like above that implies its an empty file otherwise the data would be like

Code:
20120507abcbvkdfjkdfhdfj  1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
20120507abcssdfldkjflkdsf  1

All I need is if its timestamp then set it false else true

I use an etl tool so I can forward to next only if the value is true.
Moderator's Comments:
Mod Comment Please view this code tag video for how to use code tags when posting code and data.


---------- Post updated at 02:47 PM ---------- Previous update was at 01:55 PM ----------

Thanks! Will keep that in mind from next thread.
Last edited by Corona688; 08-20-2012 at 04:40 PM..
# 4  
Old 08-20-2012
Hm. Big obvious difference is the first file has a : in it, the second doesn't.

Code:
if head -n 1 filename | grep ":" > /dev/null
then
        echo "File has 2012081503:44:54 date format"
else
        echo "File has something else"
fi

# 5  
Old 08-21-2012
Can it be done anyway without looking for :

What if the source data is like
Code:
N511304000053292N

# 6  
Old 08-21-2012
Instead of "what if", please just show us sample file data. What we need is a complete idea of the problem and the data.
# 7  
Old 08-21-2012
If the source file has data with only date timestamp then the file should not be processed. For this I asked how to see if the file has the timestamp so I can assign some value to it and reject the data

Code:
2012081503:44:54

Good data looks like

Code:
CQ11302000069265  2N           480.000 201206122012050720120612M         
CQ11302000069269  2N           288.000 201206122012050720120612M

has so many fields and records in the good data file.

The file I posted earlier is also one source file but I can get through that by not processing at all. That why I asked again what if the data is like something else.
 
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