I installed pigz via homebrew on my Macbook Air (OS X 10.10.5) to get better performance for compress/decompress.
To compress, I use tar --use-compress-program=pigz -cf test.tgz test and it's ok.
But the command to uncompress, tar --use-compress-program=pigz -xf test.tgz output error:
tar: Unrecognized archive format
tar: Error exit delayed from previous errors.
Or sometimes it output:
tar: Unrecognized archive format
pigz: abort: write error on <stdout> (Broken pipe)
tar: Child process exited with status 32
tar: Error exit delayed from previous errors.
I read the manual of tar, and have no clue why it doesn't work.
I noticed that even tar --use-compress-program=gzip -xf test.tgz generate the same error. So is this a bug of OSX's tar implementation?
Note: I know pipe style pigz -d test.tgz | tar -xf works and in this case I could also just use tar -xf test.tgz which call built-in gzip. But I just want to confirm whether it is a bug.
The program works as designed: there is no provision in its command-line to pass along the options needed to use gzip for decompressing. Instead of "gzip" for decompressing, you should use the wrapped gzcat, e.g.,
tar --use-compress-program gzip -cf foo.compressed foo
tar --use-compress-program gzcat -tf foo.compressed
A quick check shows that this does not work:
tar --use-compress-program 'gzip -d' -tf foo.compress
although that could change some time (it is doable, but not done).
According to pigz's manual page, it has unpigz, which is what you can use for that program.
This is an issue between BSD tar and GNU tar.
I fixed this by installing gnu-tar from homebrew and placing that on the path.
See this similar question on superuser: https://superuser.com/questions/318809/linux-os-x-tar-incompatibility-tarballs-created-on-os-x-give-errors-when-unt
on linux I renamed gzip to gzip.sav and made a soft link to pigz so tar, dolphin, yum, and any other program that calls gzip actually calls pigz
Related
So I am using pigz in tar with
tar --use-compress-program=pigz
and this works but it doesn't use all of my processors, and I'd like to make sure it's recursive (-r) and using (-9 compression level).
I read through Utilizing multi core for tar+gzip/bzip compression/decompression but it doesn't note anywhere to add additional commands in that format, and I couldn't find anything in the man page for either program for additional swithed.
Thanks,
Cam
Mark Adler's top voted answer on the SO link that you included in your question does provide a solution for specifying compression-level as well as number of processors to use:
tar cf - paths-to-archive | pigz -9 -p 32 > archive.tar.gz
See : https://stackoverflow.com/a/12320421
To pass arguments to pigz using -I or --use-compress-program, you can enclose the command and arguments in quotes, like so:
tar --use-compress-program="pigz --best --recursive" -cf archive.tar.gz YourData
Here's a fun option to monitor the speed of the archive creation:
tar --use-compress-program="pigz --best --recursive | pv" -cf archive.tar.gz YourData
fast unpack:
tar -I pigz -xf /mnt/sd/current/backup/bigbackup_web.tar.gz -C /tmp
fast pack:
tar -cf bigbackup.tar.gz -I pigz /opt
then:
apt-get install pigz
or
yum install pigz
I would like to download a file with curl, check its checksum with sha1sum (or a similar tool) and pipe the file into tar to unpack it, given that the result of sha1sum was a 0.
I know that without the checksum verfication it would be a simple curl <link> | tar x , however I'm having a hard time fitting sha1sum in there since its syntax is very foreign to me. I could probably manage to do it if sha1sum was able to receive the checksum as a parameter and read the file from stdin, but as far as I have seen this is not possible. Is there a way to achieve this nontheless?
set -ex; \
curl -o wordpress.tar.gz -fSL "https://wordpress.org/wordpress-4.7.3.tar.gz"; \
echo "35adcd8162eae00d5bc37f35344fdc06b22ffc98 *wordpress.tar.gz" | sha1sum -c -; \
tar -xzf wordpress.tar.gz -C ./
In Git Bash I've tried to use this command:
$ git archive -o test.tar.gz master
gzip: compressed data not written to a terminal. Use -f to force compression.
For help, type: gzip -h
The file test.tar.gz is empty, but my repository is not empty and creating a zip file works fine (contains all my source files)! Why does the tarball format fail to produce an archive?
This appears to be a compatibility problem between the way git archive wants to pipe content from tar to gzip and the way Windows handles pipes. You can generate the same error message by piping tar into gzip manually:
$ tar -c file.txt | gzip
gzip: compressed data not written to a terminal. Use -f to force compression.
For help, type: gzip -h
These two commands work for me on Windows 7, and should be functionally identical to the one you're trying:
$ git archive -o test.tar master
$ gzip test.tar
Pipe it to gzip:
git archive master | gzip > test.tar.gz
Even if you are not using Git Bash, from regular Command Prompt you can just:
git archive --format=tar.gz master > test.tar.gz
I'm fairly new to running scripts in Xcode and haven't been able to figure out whats wrong with the script I'm running. The first script I ran was this:
/bin/sh -x
PBXCP=${DEVELOPER_DIR}/Library/PrivateFrameworks/DevToolsCore.framework/Resources/pbxcp
${PBXCP} -exclude .svn "${PROJECT_DIR}/../../base"
"${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/"
Which caused me to run into this error:
/Users/newperson/Library/Developer/Xcode/DerivedData/appname-etesgjzdmfzimlgvakidckjecgij
/Build
/Intermediates/appname.build/Debug-iphonesimulator/app.build/Script-
435F41A90F532CA300887552.sh: line 3: /Applications/Xcode.app/Contents/Developer/Library
/PrivateFrameworks/DevToolsCore.framework/Resources/pbxcp: No such file or directory
This error was fairly to the point, The file the script is looking for doesn't exist. The newer versions of Xcode have gotten rid of pbxcp. So I started looking for a good alternative script to run that wouldn't use pbxcp, when I found this:
/bin/sh -x
/usr/bin/tar -c -C "${PROJECT_DIR}/myframeworks" --exclude .DS_Store --exclude CVS --exclude
.svn --exclude .git -H `cd "${PROJECT_DIR}/myframeworks" && find DevToolsCore.framework` |
/usr/bin/tar -x -C ${BUILT_PRODUCTS_DIR}/${FRAMEWORKS_FOLDER_PATH}
This script also caused me to run into a problem, which was this:
tar: could not chdir to '/Users/newperson/Library/Developer/Xcode/DerivedData/appname-
etesgjzdmfzimlgvakidckjecgij/Build/Products/Debug-iphonesimulator/appname.app/Frameworks'
tar: Write error
Command /bin/sh failed with exit code 1
I couldn't find a clear answer to what this error meant, one forum suggest that I use the sudo command in my script to give the script permission to change directory, so I ran this:
/bin/sh -x
/usr/bin/tar -c -C "${PROJECT_DIR}/myframeworks" --exclude .DS_Store --exclude CVS --exclude
.svn --exclude .git -H `cd "${PROJECT_DIR}/myframeworks" && find DevToolsCore.framework`
| sudo /usr/bin/tar -x -C ${BUILT_PRODUCTS_DIR}/${FRAMEWORKS_FOLDER_PATH}
This script caused me to run into this error though:
tar: Write error
Command /bin/sh failed with exit code 1
++ find DevToolsCore.framework
sudo: no tty present and no askpass program specified
tar: Write error
This is as far as I got so far, I am fairly lost with my limited knowledge of shell script so any help correcting my script or finding a suitable replacement for the Xcode framework that contains pbxcp would be appreciated.
Change the permissions of the directory where your script wants to write files. Do it in an interactive session of Terminal:
$ sudo chmod a+w the_directory
Then you should be able to run your script (without sudoing the tar).
I have a pkg file created by Install Maker for Mac.
I want to replace one file in pkg. But I must do this under Linux system, because this is a part of download process. When user starts to download file server must replace one file in pkg.
I have a solution how unpack pkg and replace a file but I dont know how pack again to pkg.
http://emresaglam.com/blog/1035
http://ilostmynotes.blogspot.com/2012/06/mac-os-x-pkg-bom-files-package.html
Packages are just .xar archives with a different extension and a specified file hierarchy. Unfortunately, part of that file hierarchy is a cpio.gz archive of the actual installables, and usually that's what you want to edit. And there's also a Bom file that includes information on the files inside that cpio archive, and a PackageInfo file that includes summary information.
If you really do just need to edit one of the info files, that's simple:
mkdir Foo
cd Foo
xar -xf ../Foo.pkg
# edit stuff
xar -cf ../Foo-new.pkg *
But if you need to edit the installable files:
mkdir Foo
cd Foo
xar -xf ../Foo.pkg
cd foo.pkg
cat Payload | gunzip -dc |cpio -i
# edit Foo.app/*
rm Payload
find ./Foo.app | cpio -o | gzip -c > Payload
mkbom Foo.app Bom # or edit Bom
# edit PackageInfo
rm -rf Foo.app
cd ..
xar -cf ../Foo-new.pkg
I believe you can get mkbom (and lsbom) for most linux distros. (If you can get ditto, that makes things even easier, but I'm not sure if that's nearly as ubiquitously available.)
Here is a bash script inspired by abarnert's answer which will unpack a package named MyPackage.pkg into a subfolder named MyPackage_pkg and then open the folder in Finder.
#!/usr/bin/env bash
filename="$*"
dirname="${filename/\./_}"
pkgutil --expand "$filename" "$dirname"
cd "$dirname"
tar xvf Payload
open .
Usage:
pkg-upack.sh MyPackage.pkg
Warning: This will not work in all cases, and will fail with certain files, e.g. the PKGs inside the OSX system installer. If you want to peek inside the pkg file and see what's inside, you can try SuspiciousPackage (free app), and if you need more options such as selectively unpacking specific files, then have a look at Pacifist (nagware).
You might want to look into my fork of pbzx here: https://github.com/NiklasRosenstein/pbzx
It allows you to stream pbzx files that are not wrapped in a XAR archive. I've experienced this with recent XCode Command-Line Tools Disk Images (eg. 10.12 XCode 8).
pbzx -n Payload | cpio -i
In addition to what #abarnert said, I today had to find out that the default cpio utility on Mountain Lion uses a different archive format per default (not sure which), even with the man page stating it would use the old cpio/odc format. So, if anyone stumbles upon the cpio read error: bad file format message while trying to install his/her manipulated packages, be sure to include the format in the re-pack step:
find ./Foo.app | cpio -o --format odc | gzip -c > Payload
#shrx I've succeeded to unpack the BSD.pkg (part of the Yosemite installer) by using "pbzx" command.
pbzx <pkg> | cpio -idmu
The "pbzx" command can be downloaded from the following link:
pbzx Stream Parser
If you are experiencing errors during PKG installation following the accepted answer, I will give you another procedure that worked for me (please note the little changes to xar, cpio and mkbom commands):
mkdir Foo
cd Foo
xar -xf ../Foo.pkg
cd foo.pkg
cat Payload | gunzip -dc | cpio -i
# edit Foo.app/*
rm Payload
find ./Foo.app | cpio -o --format odc --owner 0:80 | gzip -c > Payload
mkbom -u 0 -g 80 Foo.app Bom # or edit Bom
# edit PackageInfo
rm -rf Foo.app
cd ..
xar --compression none -cf ../Foo-new.pkg
The resulted PKG will have no compression, cpio now uses odc format and specify the owner of the file as well as mkbom.
Bash script to extract pkg: (Inspired by this answer:https://stackoverflow.com/a/23950738/16923394)
Save the following code to a file named pkg-upack.sh on the $HOME/Downloads folder
#!/usr/bin/env bash
filename="$*"
dirname="${filename/\./_}"
mkdir "$dirname"
# pkgutil --expand "$filename" "$dirname"
xar -xf "$filename" -C "$dirname"
cd "$dirname"/*.pkg
pwd
# tar xvf Payload
cat Payload | gunzip -dc |cpio -i
# cd usr/local/bin
# pwd
# ls -lt
# cp -i * $HOME/Downloads/
Uncomment the last four lines, if you are using a rudix package.
Usage:
cd $HOME/Downloads
chmod +x ./pkg-upack.sh
./pkg-upack.sh MyPackage.pkg
This was tested with the ffmpeg and mawk package from rudix.org (https://rudix.org) search for ffmpeg and mawk packages on this site.
Source : My open source projects : https://sourceforge.net/u/nathan-sr/profile/