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Full Discussion: Help needed in search string
Top Forums UNIX for Dummies Questions & Answers Help needed in search string Post 302146732 by bakunin on Thursday 22nd of November 2007 03:52:53 AM
Old 11-22-2007
Lets see if i have understood you correctly:

you search for a string of the form "<string1>\<string2>" and want to write it to a file. Then you search for strings of the form "<string1>\" or "\<string2>" and write it to another file.

This is done with pattern matching. You can use either sed or awk for that, in this case i would suggest sed because it is smaller than awk and you don't need the capabilities awk would offer.

The string "<string1>/<string2>" can be found with the regexp:

Code:
[^ ][^ ]*\\[^ ][^ ]*

This searches for one or more non-spaces ("[^ ][^ ]*") followed by a backslash followed by one or more non-spaces. The "\" has to be escaped because it has a special meaning, therefore "\\".

The second form of strings can be found by two regexps, very similar to the first one:

Code:
" \\[^ ][^ ]*" and
"[^ ][^ ]*\\ "

A space followed by a backslash followed by one or more non-spaces or one or more non-spaces followed by a backslash followed by a space.

Write the found lines to two different files and you are done.

If you need further help feel free to ask.

bakunin
 

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GRADM(8)						      System Manager's Manual							  GRADM(8)

NAME
gradm - Administration program for the grsecurity RBAC system SYNOPSIS
gradm [ -E ] [ -R ] [ -C ] [ -F ] [ -L <logfile> ] [ -O <filename|stream> ] [ -M <filename|uid> ] [ -D ] [ -P [rolename] ] [ -a <rolename> ] [ -n <rolename> ] [ -p <rolename> ] [ -u ] [ -V ] [ -h ] [ -v ] DESCRIPTION
gradm is the userspace RBAC parsing and authentication program for grsecurity grsecurity aims to be a complete security system for Linux 2.4. gradm performs several tasks for the RBAC system including authenticated via a password to the kernel and parsing rules to be passed to the kernel. OPTIONS
All options to gradm are mutually exclusive, except for -L and -O. -E Enable the RBAC system -R Reload the RBAC system (only valid while in admin mode) -C Perform a check of the RBAC policy, running the same analysis against it that is performed when enabling. -F Toggle full learning mode. If used only with -L, it enables the RBAC system in full learning mode. If used with -L and -O, it parses the full learning logs and generates a complete ruleset. -M <filename|uid> Remove an execution ban on a given uid or filename that has been put in place by the RES_CRASH resource restriction of the RBAC sys- tem. -L <logfile> Parses the learning logs. Accepts an argument which specifies the logfile to scan for the learning logs. If "-" is specified as the logfile, stdin will be used as the learning log. This option can be used with -E, -O, or -F. -O <filename|stream> Specifies output mode. Requires a single argument that can be "stdout", "stderr", or a regular file. Only used with -L or -F. -D Disable the RBAC system -P [rolename] Without an argument, it sets the password for administering the RBAC system. With a role name as an argument, it sets the password for that given special role. -a <rolename> Authenticate to a special role that requires a password. -n <rolename> Authenticate to a special role that does not require a password. -p <rolename> Authenticate through PAM to a special role. -u Removes yourself from your current special role, reverting back to the normal role selection. To be used, for instance, for logging out of an admin role without exiting your shell. -V Displays verbose policy statistics when enabling the RBAC system or checking the RBAC policy. Can only be used with -C, -E, or -F -L <filename> -h Display help information -v Print version information and exit REPORTING BUGS
Please include as much information as possible(using any available debugging options) and send bug reports for gradm or the grsecurity RBAC system to spender@grsecurity.net. AUTHOR
grsecurity and gradm were created and are maintained by Brad Spengler <spender@grsecurity.net> GRADM(8)
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