Suggest me the easiest method

shihabvk · #1 (**permalink**) 08-11-2006

Hi,
I want to check whether a file of the format myfile_YYYYMMDD_HHMMSS.txt exists in a particular directory. Here YYYYMMDD_HHMMSS is the time stamp, so it will be numbers always [ I want to check for numbers only, no need to check whether valid time , if it is well and good ].
What is the best method to do this
I did it like this :
ls myfile_[0-9]*_[0-9]*.txt
but it will list files like myfile_YYYYDD_HH.txt etc

Regards
Shihab

Hitori · #2 (**permalink**) 08-11-2006

$ ls | grep "myfile_[0-9]\{8\}_[0-9]\{6\}\.txt"

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