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No. It will remove trailing spaces (if present) only in the second field. The first field will always match, since the spaces are optional (there is only one space in my regular expression). The...

Try:
for i in FILE1*; do
mv "$i" "FILE2${i#FILE1}"
done

The -c option on your tar command is causing a new file to be created with each invocation. When there are more files in your input file than can be placed on the command line xargs will invoke tar...

Hi boaz733,

One way using 'perl':

$ perl -ne 'if ( /2012\/01\/02 12:00:07/ .. /2012\/01\/03 12:00:08/ ) { print }' infile
result.log.00:2012/01/02 12:00:07.422 LOG STARTED HERE
...

If you have a core file and you have compiled the program with debuging options (-g), you can see where the core was dumped:
$ gcc -g -o something something.c $ ./something Segmentation fault...