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07-30-2009, 06:07 AM
#1
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Rep:
Searching a partition for a string
Hi guys.
Somewhere on my system I have an e-mail address I need to urgently recover. It might be in a file or it might be in free space. It might also be in the swap partition. I don't know what this address is, but I know it will appear in the very close proximity to another e-mail address that I *do* know. So I need to scan the entire partition for the known address (say it's
tom245@testmail.com for example) so I can locate the unknown one near it.
Can someone suggest a command line that would search the entire partition and show up the location of the known address? A dump of the cluster it's found in would be a bonus, too.
Thanks,
CC.
07-30-2009, 06:29 AM
#2
Member
Registered: Oct 2007
Location: MI
Distribution: Debian Slackware
Posts: 528
Rep:
As root
Code:
find / -name tom245@testmail.com
07-30-2009, 06:46 AM
#3
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Original Poster
Rep:
Quote:
Originally Posted by
mrrangerman
As root
Code:
find / -name tom245@testmail.com
that won't work if the string is outside of the filesystem (in unallocated space) will it??
07-30-2009, 07:19 AM
#4
LQ 5k Club
Registered: Dec 2008
Location: Tamil Nadu, India
Distribution: Debian
Posts: 8,578
Hello Completely Clueless
Maybe something like (not tested)
Code:
i=0
while true
block="$(dd if=/dev/sda1 seek=$i count=1)"
[[ $? -ne 0 ]] && exit
echo "$block" | grep 'some expression that matches the email address'
let i++
done
replacing /dev/sda1 with the appropriate partition device.
Best
Charles
07-30-2009, 07:58 AM
#5
Senior Member
Registered: Dec 2004
Location: Olympia, WA, USA
Distribution: Fedora, (K)Ubuntu
Posts: 4,187
I think (but haven't used it) that the foremost package can be used to do what you want to accomplish.
07-30-2009, 08:58 AM
#6
Moderator
Registered: May 2001
Posts: 29,415
If you need inode info maybe it's easier to use the (
tools from the)
TASK +Autopsy toolkit?
07-30-2009, 09:03 AM
#7
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Original Poster
Rep:
Quote:
Originally Posted by
catkin
Hello Completely Clueless
Maybe something like (not tested)
Code:
i=0
while true
block="$(dd if=/dev/sda1 seek=$i count=1)"
[[ $? -ne 0 ]] && exit
echo "$block" | grep 'some expression that matches the email address'
let i++
done
replacing /dev/sda1 with the appropriate partition device.
Best
Charles
Thanks, Charles. I've given it a shot (your code suggestion with necessary alterations) but am getting an error:
./searchx: line 10: syntax error near unexpected token `done'
./searchx: line 10: `done'
It's ironic. I'm on page 270 of the Linux Scripting Bible and have just finished 'for' loops. Whiles are next. Typical!!
07-30-2009, 09:08 AM
#8
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Original Poster
Rep:
Quote:
Originally Posted by
unSpawn
If you need inode info maybe it's easier to use the (
tools from the)
TASK +Autopsy toolkit?
To Unspawn and PTrenholm:-
I'd have thought your suggestions are rather overkill? It should be something that can be flagged as a match using some 'dd' scan of the entire partition as suggested by Charles.
In Winders some years ago, I had a third-party program called Directory Snoop which found everything everywhere. But that was Winders, where so much of the OS is off-limits. Shouldn't need forensics for this in Linux.
07-30-2009, 09:12 AM
#9
LQ Guru
Registered: Sep 2003
Location: Bologna
Distribution: CentOS 6.5 OpenSuSE 12.3
Posts: 10,509
Quote:
Originally Posted by
Completely Clueless
./searchx: line 10: syntax error near unexpected token `done'
./searchx: line 10: `done'
The code by catkin misses a "do":
07-30-2009, 09:33 AM
#10
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Original Poster
Rep:
Quote:
Originally Posted by
colucix
The code by catkin misses a "do":
Thanks, Colucix.
Well, there must be something else amiss:
Code:
1+0 records in
1+0 records out
512 bytes (512 B) copied, 2.9543e-05 seconds, 17.3 MB/s
dd: `standard output': cannot seek: Illegal seek
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000587854 seconds, 0.0 kB/s
I'm not sure what it means by "illegal seek" since I was running this as Root. :-/
07-30-2009, 09:38 AM
#11
LQ 5k Club
Registered: Dec 2008
Location: Tamil Nadu, India
Distribution: Debian
Posts: 8,578
Quote:
Originally Posted by
Completely Clueless
Thanks, Charles. I've given it a shot (your code suggestion with necessary alterations) but am getting an error:
./searchx: line 10: syntax error near unexpected token `done'
./searchx: line 10: `done'
It's ironic. I'm on page 270 of the Linux Scripting Bible and have just finished 'for' loops. Whiles are next. Typical!!
I'm sorry, I missed a "do". Try
Code:
i=0
while true
do
block="$(dd if=/dev/sda1 seek=$i count=1)"
[[ $? -ne 0 ]] && exit
echo "$block" | grep 'some expression that matches the email address'
let i++
done
If that doesn't work, please post the code you tried and the output.
07-30-2009, 09:47 AM
#12
Senior Member
Registered: Dec 2004
Location: Olympia, WA, USA
Distribution: Fedora, (K)Ubuntu
Posts: 4,187
Well, yes, I guess you could use
dd :
Code:
Peter@dv9710us:~ $ echo Testing 1 2 3 > /Share/testfile
Peter@dv9710us:~ $ mount | grep Share
/dev/sda7 on /Share type ext3 (rw)
Peter@dv9710us:~ $ sudo dd if=/dev/sda7 | grep -iaC 5 testing | hexdump -C
00000000 b0 53 f5 e5 f5 88 c4 db cc c5 1c 95 09 91 15 00 |.S..............|
00000010 b3 53 d2 e8 11 c6 97 c8 74 a1 a8 e6 3b 81 07 a2 |.S......t...;...|
00000020 ae 06 4b e8 ba 50 61 47 a1 a4 f9 fd 42 11 9a 44 |..K..PaG....B..D|
00000030 6e 8f 4f ca 0a 4b 39 2a 49 9f c2 04 b4 12 9b 08 |n.O..K9*I.......|
00000040 31 df 51 a1 7f e7 c2 a1 cd da 01 6b ce 01 b1 63 |1.Q........k...c|
00000050 9a 41 2f ab c4 cd 7b 53 1c 3f 60 2f 9b ab e8 58 |.A/...{S.?`/...X|
00000060 ae 96 9b 35 85 d8 78 4d ac e0 bd 59 fa 40 3b 39 |...5..xM...Y.@;9|
00000070 04 bf a7 ce 33 96 11 7c 7a fe 3e ab 05 d9 c3 99 |....3..|z.>.....|
00000080 76 49 36 6c 8f fc 4f c1 7f 93 7c d2 1b af 89 70 |vI6l..O...|....p|
00000090 fe ca 09 64 6e 72 18 46 77 22 be 35 89 fa 1e 4f |...dnr.Fw".5...O|
000000a0 57 78 d8 92 22 11 59 bf c5 71 0c 7a 9d 50 96 3f |Wx..".Y..q.z.P.?|
000000b0 78 78 3e e6 36 10 29 28 96 85 2e 29 40 a2 d4 4e |xx>.6.)(...)@..N|
000000c0 7f 12 4d 4b 5b d9 f4 c2 e9 12 1e 62 a3 74 94 15 |..MK[......b.t..|
000000d0 32 e0 dc fa fa 93 ca 93 3f aa c4 99 f3 9f 71 8e |2.......?.....q.|
000000e0 06 10 88 d7 29 cb e7 d1 09 bc 7a b6 06 9e e9 31 |....).....z....1|
000000f0 a8 2d 3c 83 17 c4 65 56 71 fa ca a0 e9 13 05 03 |.-<...eVq.......|
00000100 35 be f6 34 a1 d5 b0 9d 4f ff a5 67 04 17 ea 07 |5..4....O..g....|
00000110 be 87 ed fa 97 86 23 5f 78 2d 79 2a ec 5c ed 7e |......#_x-y*.\.~|
00000120 ad 95 d6 2d e3 03 19 d3 9f 3c 4d 07 d4 33 b4 ba |...-.....<M..3..|
00000130 6b 43 4d ae 4c 6e 94 d1 a5 e1 80 56 5e c5 42 1e |kCM.Ln.....V^.B.|
00000140 ba fa 00 a6 d8 de 80 97 4e 97 3f 93 95 8e ef 4f |........N.?....O|
00000150 55 2e b8 b3 11 28 a9 7d 58 65 be 97 85 cc 37 e7 |U....(.}Xe....7.|
00000160 7e 25 94 9c 65 8d f0 8b 25 c6 37 1f 9a 79 52 6f |~%..e...%.7..yRo|
00000170 45 f3 9d 1b df 85 6a 76 cf f4 e0 c7 80 f7 b9 fb |E.....jv........|
00000180 7f 8f 8b b3 f3 26 c6 03 be 48 b0 4b 5a fa fd 36 |.....&...H.KZ..6|
00000190 c9 46 65 c4 6e 6f 70 38 30 f3 6e ac e1 c1 bd 0a |.Fe.nop80.n.....|
000001a0 34 12 b7 c1 b3 3a 7f 2e 62 b0 33 73 23 fd 08 38 |4....:..b.3s#..8|
000001b0 2a 06 47 d7 79 42 ce 35 b6 1c 0d 4b 5d 53 46 64 |*.G.yB.5...K]SFd|
000001c0 2d 01 76 c7 d9 58 72 f3 21 e8 ed a6 e2 8b 4e f5 |-.v..Xr.!.....N.|
000001d0 58 e7 c1 1b fb fb b0 79 e6 3a 0c 01 9b fe 96 35 |X......y.:.....5|
000001e0 8d 06 c4 6c db 7c b9 fb cc 19 34 4a 4c 9c 7a 07 |...l.|....4JL.z.|
000001f0 52 4f 36 ca c2 52 6b fa 4b 84 ef e2 b1 ed bd 3d |RO6..Rk.K......=|
00000200 f1 0a c8 81 0f 3b fa 78 c0 e6 df e7 28 2c 89 27 |.....;.x....(,.'|
00000210 9e 90 02 73 a1 e8 cc 93 5e ed b3 31 fe 26 6b c2 |...s....^..1.&k.|
00000220 15 66 d4 96 4f 3d c6 5b 2f ad cb 0e 4b 05 df 1b |.f..O=.[/...K...|
00000230 df ce bf 97 d0 d4 82 a0 04 65 b7 3c 7b 35 bc 91 |.........e.<{5..|
00000240 77 96 86 23 7f 3e 85 fc 70 03 2d a3 3f 7f 3d 05 |w..#.>..p.-.?.=.|
00000250 b2 54 e1 7f ce cf a0 5e 59 bd 03 03 1d fb 8a 29 |.T.....^Y......)|
00000260 0c c5 38 b9 22 cd 1b 69 ca 10 44 26 d4 41 e5 c2 |..8."..i..D&.A..|
00000270 b5 1c e0 27 41 ba ab 20 5d 7e ed d5 5d 1f e5 89 |...'A.. ]~..]...|
00000280 3f df 59 03 0d 4d 1e aa 6e 12 b8 17 3a 05 81 13 |?.Y..M..n...:...|
00000290 48 68 94 9c 43 93 6c d9 2b ea d9 3c 33 24 65 8e |Hh..C.l.+..<3$e.|
000002a0 f8 3d 8d 88 d7 49 fd d8 8f 9f 33 e9 59 2d 98 3d |.=...I....3.Y-.=|
000002b0 aa 83 99 48 83 5c df 49 14 bc 02 e8 91 3f eb 44 |...H.\.I.....?.D|
000002c0 68 e1 19 9a 70 2b 9f e2 8b e7 09 3b 46 d9 be 0e |h...p+.....;F...|
000002d0 19 9a 21 3d d4 d6 ea 61 1b b4 d2 86 f3 34 42 ad |..!=...a.....4B.|
000002e0 91 76 9c ba e3 72 29 2c 97 c4 6a f5 e9 15 38 75 |.v...r),..j...8u|
000002f0 3c 12 91 f6 73 4d 90 0d 89 d5 45 f9 6d 7d 61 f4 |<...sM....E.m}a.|
00000300 29 62 dd 1f 41 47 82 b1 e2 00 8e 8f 72 92 ce e4 |)b..AG......r...|
00000310 b0 54 f7 cb 52 38 73 75 8a af 5b fd bc e9 bf 78 |.T..R8su..[....x|
00000320 37 00 b4 c5 6b a6 05 db 9b d1 74 02 76 7b 4f 63 |7...k.....t.v{Oc|
00000330 27 e2 10 23 ea 3e df 05 07 d9 ae f5 34 0a ab 40 |'..#.>......4..@|
00000340 3b 80 bb c3 d6 74 5e 97 79 d9 fa 8b 94 4f 59 68 |;....t^.y....OYh|
00000350 9c 85 4d 7d 30 8a 55 b1 8c b1 b6 7f 4a 73 22 0e |..M}0.U.....Js".|
00000360 a7 8f d6 17 8f 1e ef b3 b6 2b 0e f7 d1 11 17 1a |.........+......|
00000370 9f e3 81 2f 98 2d 96 87 8a c8 bc db 4f 7a 5e b1 |.../.-......Oz^.|
00000380 f0 52 de 16 02 92 0e 5a cb fc 70 bb 55 d1 cd 45 |.R.....Z..p.U..E|
00000390 18 46 c7 8d 90 f6 4c ef 7e 40 64 78 89 ca 75 bd |.F....L.~@dx..u.|
000003a0 18 b0 4b 90 60 b6 18 83 6e aa c7 f9 46 76 1d 56 |..K.`...n...Fv.V|
000003b0 c2 f5 a3 f9 1c 40 1c 38 18 2e a6 f3 9f 4c 99 e4 |.....@.8.....L..|
000003c0 11 54 26 91 3e ff 92 7d ec 5c fc 8b 33 15 7f fc |.T&.>..}.\..3...|
000003d0 0f fa 98 e0 a7 79 0f f1 c1 c1 af e8 c7 db a2 f8 |.....y..........|
000003e0 af 77 cc 17 34 09 c6 b5 6d bf 65 e0 2c 98 db f1 |.w..4...m.e.,...|
000003f0 84 bd 86 d9 ac 34 85 49 ff 05 53 ef f6 ec 64 5d |.....4.I..S...d]|
00000400 e1 8f ba 94 75 77 20 d9 25 64 73 e1 8d 30 e0 1c |....uw .%ds..0..|
00000410 50 b1 7c 0b a0 27 79 40 d4 18 c9 e4 bc a8 ff dd |P.|..'y@........|
00000420 89 cf de 8a b2 f7 4d 8f cb 72 32 b4 5d d4 0d 72 |......M..r2.]..r|
00000430 31 d1 02 85 14 16 72 1c 51 3f 32 95 61 53 ec 7b |1.....r.Q?2.aS.{|
00000440 e7 2b a4 f0 c9 e8 ad d4 ee a9 9d 9e 1f 1e bc bb |.+..............|
00000450 12 7b 32 68 65 9d 61 3c 12 04 e2 59 94 f4 19 83 |.{2he.a<...Y....|
00000460 65 4e e1 80 1e 67 67 89 29 3c e6 49 ac e6 7d 67 |eN...gg.)<.I..}g|
00000470 81 cb 35 80 3c 2c 72 e9 f7 3c 04 24 2c f9 65 17 |..5.<,r..<.$,.e.|
00000480 6c 83 f1 bd a8 5e 2c 64 0b 63 e9 23 47 f2 92 06 |l....^,d.c.#G...|
00000490 69 03 69 31 5b 40 9e 1c 97 08 6c c9 45 1c 39 ed |i.i1[@....l.E.9.|
000004a0 73 7e 45 ba 13 57 be 3d 90 5a 7b cd 89 82 2b 54 |s~E..W.=.Z{...+T|
000004b0 8b 50 f9 7e 0e 71 bc 69 a1 99 85 6b 19 fb 1c fe |.P.~.q.i...k....|
000004c0 e3 94 8e 27 3b 43 19 ac b5 33 bc a7 8a 33 ea 93 |...';C...3...3..|
000004d0 a5 08 33 a6 f6 84 03 78 ba 79 c4 5e 09 30 68 22 |..3....x.y.^.0h"|
000004e0 99 79 f8 1d 88 6c 8c 2f eb f4 27 77 8f 0e cb 7b |.y...l./..'w...{|
000004f0 83 32 e7 7a 0e 71 71 1c ad 95 4f b4 b4 5e f3 49 |.2.z.qq...O..^.I|
00000500 df c2 df 5a 3a e7 cb 57 f6 ad 0e 07 93 eb 1a 8d |...Z:..W........|
00000510 e5 f5 44 63 c4 5d 5a fe dc b3 e7 bf 42 ca a0 cd |..Dc.]Z.....B...|
00000520 f5 a2 a4 33 69 29 25 c3 d2 75 ee a1 dc e7 f7 bb |...3i)%..u......|
00000530 ca 6d ae bf 54 01 c2 9d 01 ac 1d 57 7c 41 f2 b8 |.m..T......W|A..|
00000540 be c0 2f b2 e1 6b f6 37 dd b9 20 17 6a ac 51 ae |../..k.7.. .j.Q.|
00000550 89 88 03 a6 58 d3 ca b4 59 3b b8 93 75 09 1d 41 |....X...Y;..u..A|
00000560 ae 71 4a ab 73 f8 f2 2b 6e cb 5e db ba 7f ba 7a |.qJ.s..+n.^....z|
00000570 16 08 aa 2c c9 f6 b2 21 10 91 f4 bd 00 27 03 91 |...,...!.....'..|
00000580 2c 2b 61 da bc 3b 3a e2 88 04 53 bf b6 81 b6 f6 |,+a..;:...S.....|
00000590 d2 b1 08 2d ec a1 8b fe f2 aa ee 15 77 4f 54 08 |...-........wOT.|
000005a0 97 85 5d 47 6d 60 62 bb c5 fd fb 0f a0 e3 c2 b0 |..]Gm`b.........|
000005b0 34 1e a6 17 70 6f b9 86 f2 63 0d c7 bb 3f f2 e3 |4...po...c...?..|
000005c0 65 93 99 c2 bf c9 15 8c 13 38 0f 79 c0 31 24 37 |e........8.y.1$7|
000005d0 66 b1 8e 78 34 ce 37 51 c8 56 8e 27 b9 66 ce 4a |f..x4.7Q.V.'.f.J|
000005e0 48 bc d5 26 41 b3 48 fa 47 29 18 7b cd b6 78 89 |H..&A.H.G).{..x.|
000005f0 a3 7a 1f e1 68 d4 b5 e3 63 fe 99 ee ca 7b 8e 92 |.z..h...c....{..|
00000600 da 41 a4 ec 9f ff 68 4e 74 a1 2f 05 54 5b 41 70 |.A....hNt./.T[Ap|
00000610 6d fb 46 6b bc 0b 5c 47 57 34 75 ab e0 b8 04 27 |m.Fk..\GW4u....'|
00000620 22 c6 54 8b 00 c2 ef 49 06 23 75 70 4d 81 92 39 |".T....I.#upM..9|
00000630 05 c9 94 20 b7 fd 5f ac 8b 24 c0 3f 11 7f dc 88 |... .._..$.?....|
00000640 84 48 1b 60 ec d3 7d 5e 35 ea 17 22 52 e6 f8 68 |.H.`..}^5.."R..h|
00000650 a9 d2 9a 86 9c d0 86 da 70 40 ac 8e 01 82 db 71 |........p@.....q|
00000660 76 45 3c 98 6d 23 ce 05 9c 29 6a d8 f9 07 82 69 |vE<.m#...)j....i|
00000670 46 56 9b 58 f1 65 3f a1 72 4b 20 ef 10 05 e0 e5 |FV.X.e?.rK .....|
00000680 89 9d d0 4c 29 4d d2 29 ec 3d b6 2e 04 1e f6 b2 |...L)M.).=......|
00000690 7e d8 dc 4e de 05 2b 76 5e cf cc db c2 2d b9 2a |~..N..+v^....-.*|
000006a0 12 99 5e 2e 80 56 f5 00 0d fd 1d f2 36 56 b9 2a |..^..V......6V.*|
000006b0 aa 43 98 ac 91 d3 60 0a 5c c8 52 fe 1d 7f b0 f8 |.C....`.\.R.....|
000006c0 a5 a2 d3 87 30 ac 29 0e dc 9c 5f 49 27 49 8c e9 |....0.)..._I'I..|
000006d0 b4 f4 ae 40 20 b3 d2 85 e6 7b b5 a4 85 a2 f2 66 |...@ ....{.....f|
000006e0 eb b2 45 c0 34 68 26 7f e1 da 99 58 7b 4f 29 36 |..E.4h&....X{O)6|
000006f0 c5 d7 70 c5 b6 21 8a ce 70 3f 5c 02 3a d0 cd 2f |..p..!..p?\.:../|
00000700 35 6d 54 ab 48 54 65 73 74 69 6e 67 20 31 20 32 |5mT.HTesting 1 2|
00000710 20 33 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 | 3..............|
00000720 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
07-30-2009, 09:51 AM
#13
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Original Poster
Rep:
Quote:
Originally Posted by
catkin
If that doesn't work, please post the code you tried and the output.
Still not having it, I'm afraid. Running your commands as this script as Root:
Code:
#!/bin/bash
# search partition for string
i=0
while true
do
block="$(dd if=/dev/sda4 seek=$i count=1)"
[[ $? -ne 0 ]] && exit
echo "$block" | grep 'xyz@yahoo.com'
let i++
done
Gives this output to the screen:
Code:
1+0 records in
1+0 records out
512 bytes (512 B) copied, 3.059e-05 seconds, 16.7 MB/s
dd: `standard output': cannot seek: Illegal seek
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.00256583 seconds, 0.0 kB/s
Any ideas?
07-30-2009, 09:52 AM
#14
LQ 5k Club
Registered: Dec 2008
Location: Tamil Nadu, India
Distribution: Debian
Posts: 8,578
Quote:
Originally Posted by
Completely Clueless
Thanks, Colucix.
Well, there must be something else amiss:
Code:
1+0 records in
1+0 records out
512 bytes (512 B) copied, 2.9543e-05 seconds, 17.3 MB/s
dd: `standard output': cannot seek: Illegal seek
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000587854 seconds, 0.0 kB/s
I'm not sure what it means by "illegal seek" since I was running this as Root. :-/
Maybe dd starts counting from 1 instead of zero; try changing i=0 to i=1.
07-30-2009, 10:03 AM
#15
Member
Registered: Mar 2008
Location: Marbella, Spain
Distribution: Many and various...
Posts: 899
Original Poster
Rep:
Quote:
Originally Posted by
catkin
Maybe dd starts counting from 1 instead of zero; try changing i=0 to i=1.
Okay. Now getting the following:-
Code:
[root@localhost bruno]# ./xsearch
dd: `standard output': cannot seek: Illegal seek
0+0 records in
0+0 records out
0 bytes (0 B) copied, 8.4019e-05 seconds, 0.0 kB/s
Perhaps sed might be a better tool?
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