ISNI

VIAF

• http://viaf.org/viaf/data/
  • http://viaf.org/viaf/data/viaf-20170906-links.txt.gz

---

wget http://viaf.org/viaf/data/viaf-20170906-links.txt.gz

make smaller

gunzip < viaf-20170906-links.txt.gz | bzip2 > viaf-20170906-links.txt.bz2

extract uncompressed file (keep original compressed file)

gunzip -c viaf-20170906-links.txt.gz > viaf-20170906-links.txt

see sizes

ls -la
-rw-r--r--  1 root     root     4440512262 Sep 21 11:44 viaf-20170906-links.txt
-rw-r--r--  1 root     root      666148170 Sep 21 11:28 viaf-20170906-links.txt.bz2
-rw-r--r--  1 root     root      814025893 Sep  7 10:36 viaf-20170906-links.txt.gz

view data

zcat viaf-20170906-links.txt.gz | head -n 100

extract lines that contain "ISNI"

zcat viaf-20170906-links.txt.gz | fgrep 'ISNI' > viaf-20170906-links.isni.txt

remove viaf and isni prefixes and sort by ISNI

zcat viaf-20170906-links.txt.gz | fgrep 'ISNI' | sed -e 's@http://viaf.org/viaf/@@' -e s'/ISNI|//' | sort -k2 | gzip > viaf-20170906-links.isni-noprefix.sortbyisni.txt.gz