Find and replace from multiple files Post: 303018603

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Top Forums UNIX for Beginners Questions & Answers Find and replace from multiple files Post 303018603 by jim mcnamara on Monday 11th of June 2018 06:13:26 PM

06-11-2018

Registered User

I'm not sure your plan is the best but here is a suggestion, make a backup first even though there is garbage in there.:
If it is limited to php files (for example), then limit searching with find as step one, then use grep to see if the file is infected, and sed to remove bad strings - sed has to write to a tmp file which at the end of sed processing gets copied back and then re-set permissions/ownership.
psuedocode:

Code:

find /path/to/start  -type f -name '*php' |
while read fname 
do
   grep -q 'malware code pattern' $fname
   if [ $? -eq 0 ]; then
      sed 's/malware pattern//g' $fname  >/tmp/file
      mv /tmp/file $fname
      chown [required ownership] $fname
      chmod [required permissions] $fname 
   fi
done

This has the potential of breaking some code. It also depends on how well you did checking for malware, it could simply reinfect your system if you missed something.
Be sure to get a good backup once the system is running correctly.

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LEARN ABOUT CENTOS

pmloadderivedconfig

PMLOADDERIVEDCONFIG(3)					     Library Functions Manual					    PMLOADDERIVEDCONFIG(3)

NAME

       pmLoadDerivedConfig - load derived metric definitions from a file

C SYNOPSIS

       #include <pcp/pmapi.h>

       int pmLoadDerivedConfig(char *fname);

       cc ... -lpcp

DESCRIPTION

       Each  line of the file fname is either a comment line (with a ``#'' in the first position of the line) or the declaration of a derived per-
       formance metric, specified as:

       * the name of the derived metric, using the same ``dot notation'' syntax that is used for PCP  performance  metrics,  see  PCPIntro(1)  and
	 pmns(5).

       * an equals sign (``='')

       * a valid expression for a derived metric, as described in pmRegisterDerived(3).

       White space is ignored in the lines.

       For each line containing a derived metric definition, pmRegisterDerived(3) is called to register the new derived metric.

       The  result  from pmLoadDerivedConfig will be the number of derived metrics loaded from fname else a value less than zero in the case of an
       error.

EXAMPLE

       # sample derived metric definitions
       bad_in_pkts = network.interface.in.errors + network.interface.in.drops
       # note the following would need to be on a single line ...
       disk.dev.read_pct = 100 * delta(disk.dev.read) /
		   (delta(disk.dev.read) + delta(disk.dev.write))

SEE ALSO

       PCPIntro(1), PMAPI(3) and pmRegisterDerived(3).

Performance Co-Pilot													    PMLOADDERIVEDCONFIG(3)