how to use cpio to unzip file
Dear experts here;
I got a request from my coworker to retrieve one lost file from a backup archive. when i check the archive, it's a big file with 67 GB, and the file ended with .cpio. How could I unzip this file and retrieve a file called Freight Survey Totals.xls (the original path of the file is /u1/shares/ncshare/Freight
I am waiting for solution online, please help.
[root@triton DACS]# ls -l
total 65681548
-rw-rw-r-- 1 dacs dacs 67257892864 Dec 18 00:06 ncdacs2_20121217223057.cpi
drwxr-xr-x 2 root root 4096 Jan 4 13:23 tmp
I got a request from my coworker to retrieve one lost file from a backup archive. when i check the archive, it's a big file with 67 GB, and the file ended with .cpio. How could I unzip this file and retrieve a file called Freight Survey Totals.xls (the original path of the file is /u1/shares/ncshare/Freight
I am waiting for solution online, please help.
[root@triton DACS]# ls -l
total 65681548
-rw-rw-r-- 1 dacs dacs 67257892864 Dec 18 00:06 ncdacs2_20121217223057.cpi
drwxr-xr-x 2 root root 4096 Jan 4 13:23 tmp
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION
Hi, woolmilkporc:
i am running your command now, it looks like it's running there. but nothing displayed on the screen yet. I will leave it there. Hopefully, after 40 minutes, it can finish.
Ordinarily speaking, How long does it take to unzip a file from an archive of 67 G ?
Thank you , Kostasp and woolmilkporc for your timely reply. I am really appreciating your posts here. That's the reason I love EE.com.
i am running your command now, it looks like it's running there. but nothing displayed on the screen yet. I will leave it there. Hopefully, after 40 minutes, it can finish.
Ordinarily speaking, How long does it take to unzip a file from an archive of 67 G ?
Thank you , Kostasp and woolmilkporc for your timely reply. I am really appreciating your posts here. That's the reason I love EE.com.
for the above command, where is the unzipped file after running/
cpio -i "*Freight Survey Totals.xls*" < archivefile.cpio
Thank you.
cpio -i "*Freight Survey Totals.xls*" < archivefile.cpio
Thank you.
It should have retained its original path, but with the leading "/" stripped, i. e. relative to your current directory:
/current/directory/u1/shares/ncshare/Freight Survey Totals.xls
I think you should repeat the extraction with "-v" specified, so you can see what cpio does.
cpio -iv "*Freight Survey Totals.xls*" < archivefile.cpio
If you're unsure about the filename (spelling) try
cpio -ivt < archivefile.cpio
so you'll get a table of contents.
/current/directory/u1/shares/ncshare/Freight Survey Totals.xls
I think you should repeat the extraction with "-v" specified, so you can see what cpio does.
cpio -iv "*Freight Survey Totals.xls*" < archivefile.cpio
If you're unsure about the filename (spelling) try
cpio -ivt < archivefile.cpio
so you'll get a table of contents.
it finished, with the result as below:
[root@triton DACS]# cpio -i "*Freight Survey Totals.xls*" < ncdacs2_20121217223057.cpi
131363044 blocks
I am looking for the restored file.
[root@triton DACS]# cpio -i "*Freight Survey Totals.xls*" < ncdacs2_20121217223057.cpi
131363044 blocks
I am looking for the restored file.
Yes, sorry, you must use the "-d" ("--make-directories") flag:
cpio -idv "*Freight Survey Totals.xls*" < archivefile.cpio
cpio -idv "*Freight Survey Totals.xls*" < archivefile.cpio
it finished showing the result as below;
[root@triton DACS]# cpio -idv "*Freight Survey Totals.xls*" < ncdacs2_2012121722 3057.cpio
131363044 blocks
but I still didn't find the upzipped file and folder. Please advise.
[root@triton DACS]# cpio -idv "*Freight Survey Totals.xls*" < ncdacs2_2012121722 3057.cpio
131363044 blocks
but I still didn't find the upzipped file and folder. Please advise.
Please check the cotents of your archive.
cpio -ivt < ncdacs2_20121217223057.cpi
This will probably give too much output, so use something like "grep -i Survey" to filter:
cpio -ivt < ncdacs2_20121217223057.cpi
Once you found the file, use its full name to extract it.
The fact that it didn't work up to now could also be related to the spaces in the filename. I, personally, never have spaces in filenames (but I don't have to deal with Windows clients either).
If this is the culprit something like the following could help:
cpio -idv "*Freight*Survey*Totals.xl
But before we continue - what's in the table of contents?
cpio -ivt < ncdacs2_20121217223057.cpi
This will probably give too much output, so use something like "grep -i Survey" to filter:
cpio -ivt < ncdacs2_20121217223057.cpi
Once you found the file, use its full name to extract it.
The fact that it didn't work up to now could also be related to the spaces in the filename. I, personally, never have spaces in filenames (but I don't have to deal with Windows clients either).
If this is the culprit something like the following could help:
cpio -idv "*Freight*Survey*Totals.xl
But before we continue - what's in the table of contents?
I am running the above command now. I don't like to use space in file names too, my coworkers, those wharehouse people, you know them. :)
I hope this time i will get luck.
I hope this time i will get luck.
can I open two putty sessions and run the above two commands at the same time.
I really want to see the result. If both sessions access the same file, will that be the problem?
I really want to see the result. If both sessions access the same file, will that be the problem?
The result is like this:
[root@triton DACS]# cpio -ivt < ncdacs2_20121217223057.cpi
131363044 blocks
[root@triton DACS]# cpio -ivt < ncdacs2_20121217223057.cpi
131363044 blocks
when I check the folders, I see this, do you think these are unzipped files?
[mis@triton DACS]$ ls -l
total 93104480
-rw-rw-r-- 1 dacs dacs 22960521903 Oct 13 00:31 ncdacs2_20121012223052.cpi
-rw-rw-r-- 1 dacs dacs 9601408282 Jan 1 02:38 ncdacs2_20121231223503.cpi
-rw-rw-r-- 1 dacs dacs 19793141418 Jan 2 07:32 ncdacs2_20130101223444.cpi
-rw-rw-r-- 1 dacs dacs 19704611095 Jan 3 00:03 ncdacs2_20130102223047.cpi
-rw-rw-r-- 1 dacs dacs 23279272596 Jan 4 00:25 ncdacs2_20130103223058.cpi
[mis@triton DACS]$
[mis@triton DACS]$ ls -l
total 93104480
-rw-rw-r-- 1 dacs dacs 22960521903 Oct 13 00:31 ncdacs2_20121012223052.cpi
-rw-rw-r-- 1 dacs dacs 9601408282 Jan 1 02:38 ncdacs2_20121231223503.cpi
-rw-rw-r-- 1 dacs dacs 19793141418 Jan 2 07:32 ncdacs2_20130101223444.cpi
-rw-rw-r-- 1 dacs dacs 19704611095 Jan 3 00:03 ncdacs2_20130102223047.cpi
-rw-rw-r-- 1 dacs dacs 23279272596 Jan 4 00:25 ncdacs2_20130103223058.cpi
[mis@triton DACS]$
These are old and not so old manually gzipped cpio archives. cpio does not zip/unzip on its own.
There is no file containing the string "Survey" in your archive.
Let's hope that the file has been written to the archive at all (spaces?).
What do you get with
cpio -ivt < ncdacs2_20121217223057.cpi
And please display the whole toc (without "| grep ...", that is). What do you see?
There is no file containing the string "Survey" in your archive.
Let's hope that the file has been written to the archive at all (spaces?).
What do you get with
cpio -ivt < ncdacs2_20121217223057.cpi
And please display the whole toc (without "| grep ...", that is). What do you see?
This command finished:
[root@triton DACS]# cpio -idv "*Freight*Survey*Totals.xl
131363044 blocks
[root@triton DACS]# cpio -idv "*Freight*Survey*Totals.xl
131363044 blocks
Can we use this file:
-rw-rw-r-- 1 dacs dacs 9601408282 Jan 1 02:38 ncdacs2_20121231223503.cpi
I think this backup is very new and it's just three days before the file lost.
Could we unzip this file and see if the lost file is there?
Thanks.
-rw-rw-r-- 1 dacs dacs 9601408282 Jan 1 02:38 ncdacs2_20121231223503.cpi
I think this backup is very new and it's just three days before the file lost.
Could we unzip this file and see if the lost file is there?
Thanks.
it looks like this time got some files unzipped. It shows some files with "freight" in the file names.
It indeed unzipped some files, but not the files they lost. That means this archive doesn't have this file backuped up, right?
[root@triton DACS]# cpio -idv "*Freight*Survey*Totals.xl
131363044 blocks
[root@triton DACS]# ^C
[root@triton DACS]# cpio -ivt < ncdacs2_20121217223057.cpi
-rw-rw---- 1 201 users 111872 Mar 1 2012 u3/u4backup/datacoll/obj/ old/freight1.cob
-rw-rw---- 1 201 users 111872 Mar 1 2012 u3/u4backup/datacoll/obj/ old/freight1p.cob
-rw-rw---- 1 201 users 111872 Mar 1 2012 u3/u4backup/datacoll/obj/ freight1.cob
-rw-rw---- 1 201 users 112128 Mar 1 2012 u3/u4backup/datacoll/obj/ freight1p.cob
-rw-rw---- 1 10005 10003 9456 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightCarriers.frm
-rw-rw---- 1 10005 10003 9211 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightCharges.frm
-rw-rw---- 1 10005 10003 9239 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightDestinations.f
-rw-rw---- 1 10005 10003 9220 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightMethods.frm
-rw-rw---- 1 10005 10003 9344 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightProNumbers.frm
-rw-rw---- 1 10005 10003 9168 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightRates.frm
-rw-rw---- 1 10005 10003 9066 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightServices.frm
-rw-rw---- 1 10005 10003 9216 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightZones.frm
-rw-r----- 1 10004 ftp 54410 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/E
-rw-r----- 1 10004 ftp 757167 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/S
-rw-r----- 1 10004 ftp 765479 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/S
-rw-r----- 1 10004 ftp 1151137 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/S
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u3/u4backup/testcoll/obj/o
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u3/u4backup/testcoll/obj/o
-rw-rw---- 1 10001 10001 111872 Mar 1 2012 u3/u4backup/testcoll/obj/f
-rw-rw---- 1 10001 10001 112128 Mar 1 2012 u3/u4backup/testcoll/obj/f
-rw-rw---- 1 201 users 110848 May 25 2006 u4/datacoll/obj/old/freigh
-rw-rw---- 1 201 users 111104 Feb 27 2007 u4/datacoll/obj/old/freigh
-rw-rw---- 1 201 users 111872 Sep 26 2010 u4/datacoll/obj/freight1.c
-rw-rw---- 1 201 users 111872 Sep 26 2010 u4/datacoll/obj/freight1p.
-rw-rw---- 1 10001 10001 111616 Jun 1 2010 u4/testcoll/obj/old/freigh
-rw-rw---- 1 10001 10001 111616 Jun 1 2010 u4/testcoll/obj/old/freigh
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u4/testcoll/obj/freight1.c
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u4/testcoll/obj/freight1p.
-rw-r----- 1 10004 ftp 54410 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-r----- 1 10004 ftp 757167 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-r----- 1 10004 ftp 1151137 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-r----- 1 10004 ftp 765479 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-rw---- 1 10005 10003 9456 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9211 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9239 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9220 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9344 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9168 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9066 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9216 Feb 21 2007 u4/mysql/data21/prod/Freig
131363044 blocks
[root@triton DACS]# cpio -idv "*Freight*Survey*Totals.xl
131363044 blocks
[root@triton DACS]# ^C
[root@triton DACS]# cpio -ivt < ncdacs2_20121217223057.cpi
-rw-rw---- 1 201 users 111872 Mar 1 2012 u3/u4backup/datacoll/obj/ old/freight1.cob
-rw-rw---- 1 201 users 111872 Mar 1 2012 u3/u4backup/datacoll/obj/ old/freight1p.cob
-rw-rw---- 1 201 users 111872 Mar 1 2012 u3/u4backup/datacoll/obj/ freight1.cob
-rw-rw---- 1 201 users 112128 Mar 1 2012 u3/u4backup/datacoll/obj/ freight1p.cob
-rw-rw---- 1 10005 10003 9456 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightCarriers.frm
-rw-rw---- 1 10005 10003 9211 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightCharges.frm
-rw-rw---- 1 10005 10003 9239 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightDestinations.f
-rw-rw---- 1 10005 10003 9220 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightMethods.frm
-rw-rw---- 1 10005 10003 9344 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightProNumbers.frm
-rw-rw---- 1 10005 10003 9168 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightRates.frm
-rw-rw---- 1 10005 10003 9066 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightServices.frm
-rw-rw---- 1 10005 10003 9216 Feb 21 2007 u3/u4backup/mysql/data21/ prod/FreightZones.frm
-rw-r----- 1 10004 ftp 54410 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/E
-rw-r----- 1 10004 ftp 757167 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/S
-rw-r----- 1 10004 ftp 765479 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/S
-rw-r----- 1 10004 ftp 1151137 Sep 27 2005 u3/u4backup/spnotes/Custo mer_Special_Instructions/S
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u3/u4backup/testcoll/obj/o
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u3/u4backup/testcoll/obj/o
-rw-rw---- 1 10001 10001 111872 Mar 1 2012 u3/u4backup/testcoll/obj/f
-rw-rw---- 1 10001 10001 112128 Mar 1 2012 u3/u4backup/testcoll/obj/f
-rw-rw---- 1 201 users 110848 May 25 2006 u4/datacoll/obj/old/freigh
-rw-rw---- 1 201 users 111104 Feb 27 2007 u4/datacoll/obj/old/freigh
-rw-rw---- 1 201 users 111872 Sep 26 2010 u4/datacoll/obj/freight1.c
-rw-rw---- 1 201 users 111872 Sep 26 2010 u4/datacoll/obj/freight1p.
-rw-rw---- 1 10001 10001 111616 Jun 1 2010 u4/testcoll/obj/old/freigh
-rw-rw---- 1 10001 10001 111616 Jun 1 2010 u4/testcoll/obj/old/freigh
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u4/testcoll/obj/freight1.c
-rw-rw---- 1 10001 10001 111872 Sep 26 2010 u4/testcoll/obj/freight1p.
-rw-r----- 1 10004 ftp 54410 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-r----- 1 10004 ftp 757167 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-r----- 1 10004 ftp 1151137 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-r----- 1 10004 ftp 765479 Sep 27 2005 u4/spnotes/Customer_Specia
-rw-rw---- 1 10005 10003 9456 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9211 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9239 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9220 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9344 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9168 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9066 Feb 21 2007 u4/mysql/data21/prod/Freig
-rw-rw---- 1 10005 10003 9216 Feb 21 2007 u4/mysql/data21/prod/Freig
131363044 blocks
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION
4) Yes, the file is not there. Seems there is nothing from /u1/... present at all.
Seems you have some special script in place to create the archive which prepends a backslash to the spaces in filenames.
So, if the file were present, this format "*Freight*Survey*Totals.xl
Seems you have some special script in place to create the archive which prepends a backslash to the spaces in filenames.
So, if the file were present, this format "*Freight*Survey*Totals.xl
yes, thank you very much. Since the office in North Carolinze have to close now, I have to ask them to switch the tape out because I don't want to this archive be overwritten. I have to keep working on this next Monday.
But i really feel moved by your help. I should treat you for a dinnder for this work.
I am in Los Angeles, CA. my email is condescendent@gmail.com. Give me an email when you have time. I want to make friends with you.
But i really feel moved by your help. I should treat you for a dinnder for this work.
I am in Los Angeles, CA. my email is condescendent@gmail.com. Give me an email when you have time. I want to make friends with you.
From the output, it looks like all the recoverried files were written back to their original position, am I right?
No. Two things:
1) You used the -t flag, which means "table of contents". So nothing was written, you just saw the list of files contained in the archive.
2) Please note the missing leading slash. e. g. in "u4/mysql/data21/prod/Frei
So even if the files had been written (they haven't!) their new position would be relative to your current directory, so if you were in /tmp you would have written "/tmp/u4/mysql/data21/prod
1) You used the -t flag, which means "table of contents". So nothing was written, you just saw the list of files contained in the archive.
2) Please note the missing leading slash. e. g. in "u4/mysql/data21/prod/Frei
So even if the files had been written (they haven't!) their new position would be relative to your current directory, so if you were in /tmp you would have written "/tmp/u4/mysql/data21/prod
thank you very much, woolmilkporc, I learned a lot.
I have to go to lunch now, it's 3:32 PM. here in CA. It's a really nice experience to working with you. I hope you have a wonderful weekend.
I have to go to lunch now, it's 3:32 PM. here in CA. It's a really nice experience to working with you. I hope you have a wonderful weekend.
Gain unlimited access to on-demand training courses with an Experts Exchange subscription.
Get AccessWhy Experts Exchange?
Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.
Jim Murphy
Programmer at Smart IT Solutions
When asked, what has been your best career decision?
Deciding to stick with EE.
Mohamed Asif
Technical Department Head
Being involved with EE helped me to grow personally and professionally.
Carl Webster
CTP, Sr Infrastructure Consultant
Did You Know?
We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE
Ask ANY Question
Connect with Certified Experts to gain insight and support on specific technology challenges including:
- Troubleshooting
- Research
- Professional Opinions
Join our community and discover your potential
Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.
*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.