by Sash » Sat, 01 Oct 2005 05:52:58
by Stephane CHAZELA » Sat, 01 Oct 2005 06:05:12
No, unless that file is a pipe (ls -l output would start with aQuote:> Hi, I'm grepping for a pattern (GNU/Linux, BASH 2.05) in a log file
> that's open by a process. When I run grep on this file, grep doesn't
> exit and I suspect it's because the file is open by a process and grep
> is waiting for further input.
> Is my assumption right?
If it's not a fifo, try to find out what grep is doing.
Running
strace -p $(pidof grep)
when grep is stuck may give some information.
--
Stphane
by Ed Morto » Sat, 01 Oct 2005 06:09:05
Ed.
by Sash » Sat, 01 Oct 2005 06:29:39
> You're probably wrong. Check that the file exists, check that you're
> quoting your variables properly, and if that doesn't fix it, post back
> here and show the actual command you used.
> Ed.
1. grep attempts to grep in non-ascii files
This is an area where I with that the "file" command were a bit more
robust. It does a good job of identifying the type of file it is examining,
but it doesn't provide it's feedback in a machine-friendly format. What
would be nice is if there were an option that would output a two-digit
value for the type of file that is being examined - that a shell script
could examine the value and decide whether certain operations should be
performed or not.
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