How to grep logs for errors and receive specific additional lines? Post: 302855791

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Top Forums Shell Programming and Scripting How to grep logs for errors and receive specific additional lines? Post 302855791 by nbsparks on Saturday 21st of September 2013 01:07:53 AM

09-21-2013

Registered User

My servers run Debian 7.1 (wheezy) 64-bit. I'll give this a try.

---------- Post updated at 10:01 PM ---------- Previous update was at 09:52 PM ----------

I couldn't get that script to produce anything. I added a >filename.log at the end and it produced a 0-byte file.

---------- Post updated at 10:03 PM ---------- Previous update was at 10:01 PM ----------

I added a "set -x" to the beginning of the script to see if that would produce anything helpful:

Code:

mc@minecraftserver ~/scripts$ ./test.sh
+ awk '-F[][]' '
# pc() -- print context
# print up to 11 lines of context and clear context.
function pc(    i) {
        for(i = (lc > 10) ? lc - 10 : 1; i <= lc; i++)
                print l[i]
        lc = 0
}
!/^[1-9][0-9]{3}-[01][0-9]-[0-3][0-9]/ {
        nts = 1 # we have found a line with No Time Stamp
        if(severe) {
                pc()    # print context
                print   # print this line (which follows the SEVERE tag).
        }
        next
}
/^[1-9][0-9]{3}-[01][0-9]-[0-3][0-9]/ {
        if(nts)
                # 1st line after one or more lines with no time stamp...
                severe = nts = lc = 0
        l[++lc] = $0
        if($2 == "SEVERE") severe = 1
}' /home/mc/servers/bukkitpvt/server.log

---------- Post updated at 10:07 PM ---------- Previous update was at 10:03 PM ----------

Here is the version information for "awk" for Debian 7.1 if that's helpful.

Debian -- Details of package original-awk in wheezy

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LEARN ABOUT CENTOS

grub-render-label

GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full  documentation  for grub-render-label is maintained as a Texinfo manual.  If the info and grub-render-label programs are properly
       installed at your site, the command

              info grub-render-label

       should give you access to the complete manual.

grub-render-label (GRUB) 2.02-2ubuntu8.3                             July 2018                                                GRUB-RENDER-LABEL(1)

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