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Top Forums Shell Programming and Scripting print out missing files in a sequence Post 302616301 by Corona688 on Friday 30th of March 2012 09:19:46 PM
Old 03-30-2012
This can detect some kinds of sequences. It assumes anything with digits and an extension is part of a sequence, and tells different sequences apart from the string before the last set of digits and the extension. It doesn't need the files in sorted order.

Code:
$ cat missing.awk

X=match($0, /[0-9]+\.[^.]*$/) {
        Y=match($0, /\.[^.]*$/);
        PFIX=substr($0, 0, X-1); # IM-0001-
        EXT=substr($0, Y);        # .dcm
        VAL=substr($0, X, Y-X); # 0003

        # To check if the number of digits is changing.
        DIGITS[PFIX,EXT,length(VAL)]++;

        # The +0 is to guarantee a numeric sort, not alphabetic, so "01" < "2".
        if((!SMIN[PFIX,EXT]) || (SMIN[PFIX,EXT]>(VAL+0))) SMIN[PFIX,EXT]=VAL+0;
        if((!SMAX[PFIX,EXT]) || (SMAX[PFIX,EXT]<(VAL+0))) SMAX[PFIX,EXT]=VAL+0;
        F[PFIX,EXT,VAL]=1;
}

END {
        for(X in SMAX)
        {

                split(X, A, SUBSEP);
                PFIX=A[1];      EXT=A[2];

                DC=0;
                DMAX=0;
                for(Z in DIGITS)
                {
                        split(Z, A, SUBSEP);
                        if((A[1] != PFIX) || (A[2] != EXT)) continue;
                        if(A[3] > DMAX) DMAX=A[3];
                        DC++;
                }

                if(DC == 1)     CMDSTR="%0" DMAX "d"
                else            CMDSTR="%d"

                for(N=SMIN[X]+0; N<=(SMAX[X]+0); N++)
                {
                        VAL=sprintf(CMDSTR, N);
                        if(!F[PFIX,EXT,VAL])
                                print "Missing", PFIX VAL EXT;
                }
        }
}

$ touch IM-0001-{0001..0005}.dcm file-{8..15}.dat
$ rm IM-0001-0003.dcm file-9.dat file-11.dat
$ ls | awk -f missing.awk
Missing file-9.dat
Missing file-11.dat
Missing IM-0001-0003.dcm

$

This User Gave Thanks to Corona688 For This Post:
 

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Info::CiscoPower(3pm)					User Contributed Perl Documentation				     Info::CiscoPower(3pm)

NAME
SNMP::Info::CiscoPower - SNMP Interface to data stored in CISCO-POWER-ETHERNET-EXT-MIB. AUTHOR
Bill Fenner SYNOPSIS
# Let SNMP::Info determine the correct subclass for you. my $poe = new SNMP::Info( AutoSpecify => 1, Debug => 1, DestHost => 'myswitch', Community => 'public', Version => 2 ) or die "Can't connect to DestHost. "; my $class = $poe->class(); print "SNMP::Info determined this device to fall under subclass : $class "; DESCRIPTION
The Info::PowerEthernet class needs a per-device helper function to properly map the "pethPsePortTable" to "ifIndex" values. This class provides that helper, using CISCO-POWER-ETHERNET-EXT-MIB. It does not define any helpers for the extra values that this MIB contains. Create or use a device subclass that inherit this class. Do not use directly. For debugging purposes you can call this class directly as you would SNMP::Info my $poe = new SNMP::Info::CiscoPower (...); Inherited Classes none. Note that it requires that the device inherits from Info::Entity. Required MIBs CISCO-POWER-ETHERNET-EXT-MIB GLOBALS
none. TABLE METHODS
These are methods that return tables of information in the form of a reference to a hash. Power Port Table $poe->peth_port_ifindex() Maps the "pethPsePortTable" to "ifIndex" by way of the ENTITY-MIB. $poe->peth_port_power() Power supplied by PoE ports, in milliwatts ("cpeExtPsePortPwrConsumption") CDP Port table $poe->peth_port_neg_power() Power negotiated using CDP, in milliwats ("cdpCachePowerConsumption") perl v5.12.4 2011-09-28 Info::CiscoPower(3pm)
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