04-19-2004
Searching for multiple criteria in log files?
I would like a simple shell script that will allow me to display to screen all unsuccessful su attempts in my sulog file, for the present date.
I have been trying several different combinations of commands, but I can't quite get the syntax correct.
The mess I have right now (don't laugh) is this:
#!/bin/bash
DATE = `date " +%b %d"`
grep $DATE >/dev/null
if ($4 == "-"); then
printf
fi
You can see what I'm trying to accomplish here, but I'm stuck at this point. I tried reading to see if there was a way to use a complex grep or egrep command, but that was a little too complicated for me at this point.
Would someone please help me?
Thank you
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XZGREP(1) XZ Utils XZGREP(1)
NAME
xzgrep - search compressed files for a regular expression
SYNOPSIS
xzgrep [grep_options] [-e] pattern file...
xzegrep ...
xzfgrep ...
lzgrep ...
lzegrep ...
lzfgrep ...
DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options
specified are passed directly to grep(1).
If no file is specified, then the standard input is decompressed if necessary and fed to grep(1). When reading from standard input,
gzip(1) and bzip2(1) compressed files are not supported.
If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze-
grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.
ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).
SEE ALSO
grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)
Tukaani 2009-07-05 XZGREP(1)