Thank you dear Stefano, i am aware of this module, it works great.
But my problem is, what clever regex to use, in order to identify if a subfield's content, is an ISSN number. Say our mrc has ISSN numbers thrown in any tag you could imagine... So my approach, would be, to search the whole mrc, but i do non know which regex to use... 2016-11-02 11:52 GMT+02:00 Stefano Bargioni <bargi...@pusc.it>: > Hi, Sergio: > you can try MARCgrep http://en.pusc.it/bib/MARCgrep. > Its help is: > > MARCgrep.pl > Extracts MARC records that match a condition on fields. Count and > invert are available. > > SYNOPSIS > MARCgrep.pl [options] [-e condition] file.mrc > > Options: > -h print this help message and exit > -c count only > -e condition > -f comma separated list of fields to print > -o output format "marc" | "line" | "INLINE" > -s separator string for condition, default "," > -v invert match > > Condition: > -e 'tag,indicator1,indicator2,subfield,value' > > OPTIONS > -h Print this message and exit. > > -c Count and print number of matching records > > -e The condition to match in the record. > For data fields, the syntax is: > > tag,indicator1,indicator2,subfield,value > > where tag, indicator1, indicator2, subfield, and value are > regular expressions patterns. > Do not put spaces around the separators. > > For control fields, the syntax is: > > tag,pos1,pos2,value > > where tag starts with '00' (use '000' or 'LDR' for > leader), pos1 is the starting position, > pos2 is the ending position, both 0-based. Value is a > regular expression. > > Default condition (-e not specified) matches any data > field. > For control fields, only the tag is mandatory. > > Examples: -e '100,,,a,^A' will match records that contain > 100$a starting with 'A' > -e '008,35,37,(ita|eng)' will match records with > language ita or eng in 008 > -e '(1|7)(0|1)(0|1),,2' will match > 100,110,111,700,710,711 with ind2=2 > > -f Comma separated list of fields (tags) to print if output > format > is "line" or "inline". Default is any field. > Note that if a tag is preceded by '#' sign (like in > '#nnn'), a > count of occurrences will be printed instead. > > Examples: -f '100,245' will print field 100 and 245 > -f '400,#400' will print all occurrences of 400 > field as well as the number of its occurrences > > -o Output format: "marc" for ISO2709, "line" for each subfield > in > a line, "inline" (default) for each field in a line. > > -s Specify a string separator for condition. Default is ','. > > -v Invert the sense of matching, to select non-matching > records. > > -V Print the version and exit. > > file.mrc > The mandatory ISO2709 file to read. Can be STDIN, '-'. > > DESCRIPTION > Like grep, the famous Unix utility, MARCgrep.pl allows to filter > MARC > bibliographic > records based on conditions on tag, indicators, and field value. > > Conditions can be applied to data fields, control fields or the > leader. > > In case of data fields, the condition can specify tag, indicators, > subfield and value using regular > expressions. In case of control fields, the condition must contain > the > tag name, the starting > and ending position (both 0-based), and a regular expressions for > the > value. > > Options -c and -v allow respectively to count matching records and > to > invert the match. > > If option -c is not specified, the output format can be "line" or > "inline" (both human readable), > or "marc" for MARC binary (ISO2709). For formats "line" or > "inline", > the -f option allows to specify > fields to print. > > You can chain more conditions using > > ./MARCGgrep.pl -o marc -e condition1 file.mrc | ./MARCGgrep.pl -e > condition2 - > > KNOWN ISSUES > Performance. > > Accepts and returns only UTF-8. > > Checks are case sensitive. > > AUTHOR > Pontificia Universita' della Santa Croce <http://www.pusc.it/bib/> > > Stefano Bargioni <bargi...@pusc.it> > > SEE ALSO > marktriggs / marcgrep at <https://github.com/marktriggs/marcgrep> > for > filtering large data sets > > > > On 02 nov 2016, at 09:57, Sergio Letuche <code4libus...@gmail.com> > wrote: > > > > Hello community, > > > > how would you treat the following? > > > > I need a way to identify all tags - subfields, that have stored an ISSN > number in them. > > > > What would you suggest as a clever approach for this? > > > > Thank you > >
