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Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

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Duplication Overall

7% duplication:

82,058 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
6,300 duplicated lines

410 duplicates

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
contrib/redhat (77%) --> ROOT (<1%)	1072	1 file pair	details...
ROOT (<1%) --> openbsd-compat (1%)	368	3 file pairs	details...
ROOT (<1%) --> regress (7%)	207	5 file pairs	details...

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Longest Duplicates

The list of 50 longest duplicates.

See data for all 410 duplicates...

Size	#	Folders	Files	Lines	Code
327	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	425:843 (47%) 411:829 (48%)	view
114	x 2	ROOT openbsd-compat	chacha.c chacha_private.h	90:217 (70%) 89:219 (69%)	view
32	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	304:340 (4%) 276:312 (4%)	view
28	x 2	ROOT ROOT	mux.c mux.c	705:738 (1%) 873:906 (1%)	view
27	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	245:275 (3%) 212:241 (4%)	view
24	x 2	ROOT regress	misc.c check-perm.c	1855:1887 (1%) 95:127 (19%)	view
24	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	380:404 (3%) 350:374 (3%)	view
23	x 2	ROOT ROOT	monitor.c monitor.c	1275:1299 (1%) 1331:1356 (1%)	view
23	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	356:379 (3%) 324:347 (3%)	view
22	x 2	ROOT ROOT	ms nchan.ms nchan2.ms	5:26 (22%) 4:25 (25%)	view
20	x 2	openbsd-compat openbsd-compat	strtoll.c strtoul.c	54:81 (31%) 52:77 (40%)	view
20	x 2	openbsd-compat openbsd-compat	strtoul.c strtoull.c	52:77 (40%) 54:79 (40%)	view
20	x 2	openbsd-compat openbsd-compat	getrrsetbyname-ldns.c getrrsetbyname.c	252:280 (14%) 348:376 (6%)	view
20	x 2	ROOT ROOT	ssh-pkcs11.c ssh-pkcs11.c	1292:1314 (1%) 1409:1431 (1%)	view
20	x 2	openbsd-compat openbsd-compat	strtoll.c strtoull.c	54:81 (31%) 54:79 (40%)	view
20	x 2	ROOT ROOT	dh.c dh.c	379:398 (6%) 410:429 (6%)	view
19	x 2	ROOT ROOT	in buildpkg.sh.in buildpkg.sh.in	543:564 (3%) 584:605 (3%)	view
19	x 2	contrib/suse ROOT	spec openssh.spec openssh.spec	106:124 (8%) 804:829 (2%)	view
19	x 2	contrib/redhat contrib/suse	spec openssh.spec openssh.spec	818:843 (2%) 106:124 (8%)	view
18	x 2	ROOT ROOT	ssh-pkcs11.c ssh-pkcs11.c	1123:1148 (1%) 1225:1250 (1%)	view
18	x 2	ROOT openbsd-compat	chacha.c chacha_private.h	58:77 (11%) 57:76 (11%)	view
17	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	143:162 (2%) 115:134 (2%)	view
17	x 2	ROOT ROOT	sandbox-darwin.c sandbox-rlimit.c	74:96 (48%) 64:93 (56%)	view
17	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	120:138 (2%) 90:108 (2%)	view
17	x 2	ROOT openbsd-compat	chacha.c chacha_private.h	25:53 (10%) 24:52 (10%)	view
17	x 2	ROOT ROOT	ssh-pkcs11.c ssh-pkcs11.c	704:734 (1%) 825:855 (1%)	view
16	x 2	ROOT ROOT	mux.c mux.c	1971:1989 (<1%) 2183:2201 (<1%)	view
16	x 2	ROOT ROOT	xmss_wots.c xmss_wots.c	122:145 (17%) 160:183 (17%)	view
15	x 2	ROOT ROOT	ssh-ed25519.c ssh-xmss.c	146:166 (14%) 170:190 (12%)	view
15	x 2	ROOT ROOT	ms nchan.ms nchan2.ms	72:86 (15%) 66:80 (17%)	view
15	x 2	contrib/redhat ROOT	spec openssh.spec openssh.spec	218:235 (2%) 193:210 (2%)	view
15	x 2	ROOT ROOT	atomicio.c atomicio.c	68:85 (17%) 130:147 (17%)	view
14	x 2	ROOT openbsd-compat	match.c bsd-cygwin_util.c	123:143 (9%) 220:240 (11%)	view
14	x 2	ROOT ROOT	readconf.c servconf.c	929:944 (<1%) 1366:1381 (<1%)	view
14	x 2	openbsd-compat openbsd-compat	blowfish.c blowfish.c	426:443 (2%) 465:482 (2%)	view
14	x 2	ROOT ROOT	mux.c mux.c	1746:1761 (<1%) 2264:2279 (<1%)	view
14	x 2	ROOT ROOT	ssh-pkcs11.c ssh-pkcs11.c	1643:1658 (1%) 1715:1730 (1%)	view
14	x 2	openbsd-compat openbsd-compat	bsd-snprintf.c bsd-snprintf.c	346:361 (2%) 368:383 (2%)	view
14	x 2	ROOT ROOT	mux.c mux.c	1073:1088 (<1%) 1379:1393 (<1%)	view
14	x 2	ROOT ROOT	monitor.c sshd.c	1680:1696 (1%) 2290:2306 (1%)	view
14	x 2	ROOT ROOT	readconf.c servconf.c	1038:1052 (<1%) 1608:1622 (<1%)	view
14	x 2	ROOT ROOT	sshsig.c sshsig.c	405:422 (2%) 530:547 (2%)	view
13	x 2	ROOT ROOT	scp.c scp.c	284:299 (1%) 340:355 (1%)	view
13	x 2	regress ROOT	check-perm.c session.c	61:76 (10%) 1392:1407 (<1%)	view
13	x 2	ROOT ROOT	xmss_fast.c xmss_fast.c	726:742 (2%) 1088:1104 (2%)	view
13	x 2	ROOT ROOT	mux.c mux.c	1091:1107 (<1%) 1425:1441 (<1%)	view
13	x 2	ROOT ROOT	krl.c krl.c	625:638 (1%) 698:711 (1%)	view
13	x 2	ROOT ROOT	digest-libc.c digest-openssl.c	133:156 (8%) 88:111 (11%)	view
12	x 2	ROOT ROOT	awk mdoc2man.awk survey.sh.in	11:22 (3%) 4:15 (18%)	view
12	x 2	ROOT ROOT	ssh-ed25519.c ssh-xmss.c	70:84 (11%) 78:92 (9%)	view