Re: grep does not find some lines

[Paul Eggert]

On 1/11/22 05:45, andreas graeper via wrote:
> when i `grep ' AT ' x.exp` i miss 8 lines.

That's because some of the lines contain binary data. Recent versions of 
'grep' output the diagnostic "grep: x.exp: binary file matches" to 
stderr and do not output the binary data.

You can use 'grep -a' to treat binary data as text. You might also try 
setting LC_ALL=C in the environment to get better performance (which in 
your particular case would have also fixed the problem).