Gfilui

I have a problem with checking if each line of my files is ending with a letter (A-Z (always capital))followed by exatcly 8 digit numbers (doesnt matter which one). So I have a number of files and content of each file looks like this:

Nc1nc2cc3OCCOc3cc2s1 A10000001 
CCN(CC)C1CCN(Cc2cc(I)cc(I)c2O)CC1 B100000002
CCN(CC)C1CCN(Cc2cc(cc(I)c2O)C#CCO)CC1 C10000003

There is always a space between this "string" and letter wtih numbers. So, in this example B100000002 there are 9 digits after letter. Since I done most of the things manually I would like to check if in my files there are errors. Can anybody help me with some bash command so I can see which lines have different, incorrect pattern?

Thanks!

You can use grep to get the lines that don't follow the rule:

grep -v ' [[:upper:]][0-9]8$' file*

• space matches itself


• 
  [[:upper:]] is matched by any uppercase letter


• 
  [0-9] matches a digit


• 
  8 is a "quantifier", it means the preceding construct must be repeated 8 times


• 
  $ matches at the end of line


• 
  -v shows the lines that are not matched

you could grep with a perl regexp:

grep -P ' [a-zA-Z]1[0-9]8$'

-P : for perl Regular expression

: the regexp starts with a space, because you want a space before the uppercase letter

[a-zA-Z]1 : Exactly 1 alphbaetic char lowercase or uppercase (you can remove a-z for uppercase only ie [A-Z]1)

[0-9]8 : exactly 8 numeric chars

$ : end of line

If you want to display the lines that does not match the pattern, just add the -v option to the grep command.

If you want to display lines numbers, add the -n option.

grep -Pvn ' [a-zA-Z]1[0-9]8$'