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10-08-2008
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regex
hi frnds
i m having prb while matching a numerical num... [0-9]+ is not working for me... ( ?? ) so i m achieving the criteria with [0-9]\{1,\} ( pl suggest if i m wrong ) nw the prb is.. i dont want to match the number with all zeros in it.. eg 00000 or 0000000 etc etc... pl help.. Thanks.. Anchal. |
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10-13-2008
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hi
i am working on bash shell on linux box. i am applying this pattern to search for files with some specific format... pl help |
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10-13-2008
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Refer to the man page section on "Pattern Matching", otherwise known in Shell parlance as "fileglob". The [0-9] is right, but "+" doesn't work here. To match a non-zero digit followed by more digits, you need: Code:
shopt -s nullglob echo [1-9][0-9]* If you can have leading zeros, but you don't want to match one with ONLY 0's, then you can do: Code:
shopt -s nullglob echo [1-9][0-9]* [0-9]*[1-9][0-9]* [0-9]*[1-9] This last one matches : (1) any number starting with a non-zero, AND (2) any number with a non-zero in the middle, AND (3) any number ending with a non-zero. The shopt -s nullglob ensures that if the expression does not match, you get the empty string (instead of the pattern itself). |
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