And besides those listed in the Heirloom pax man page, afio also extended the POSIX (odc) cpio format to allow for bigger files and other such stuff.
January 18, 2026 at 7:03 PM
And besides those listed in the Heirloom pax man page, afio also extended the POSIX (odc) cpio format to allow for bigger files and other such stuff.
SCO is not the only vendor to extend cpio to support bigger files. The Heirloom pax man page has details
https://heirloom.sourceforge.net/man/pax.1.html
The SCO extension is interesting because
1. It is an extension to newc (used by rpm and initramfs)
2. The extensions only kicks in when […]
https://heirloom.sourceforge.net/man/pax.1.html
The SCO extension is interesting because
1. It is an extension to newc (used by rpm and initramfs)
2. The extensions only kicks in when […]
Original post on velocipederider.com
velocipederider.com
January 18, 2026 at 7:03 PM
SCO is not the only vendor to extend cpio to support bigger files. The Heirloom pax man page has details
https://heirloom.sourceforge.net/man/pax.1.html
The SCO extension is interesting because
1. It is an extension to newc (used by rpm and initramfs)
2. The extensions only kicks in when […]
https://heirloom.sourceforge.net/man/pax.1.html
The SCO extension is interesting because
1. It is an extension to newc (used by rpm and initramfs)
2. The extensions only kicks in when […]
I got bored and reverse engineered how SCO #cpio is able to store such large files in their archives when the newc format only officially supports 4Gb file entries.
I am not a coder, so I just made some files with cpio from the Heirloom Toolset and looked at them in hexdump.
RPM packages use […]
I am not a coder, so I just made some files with cpio from the Heirloom Toolset and looked at them in hexdump.
RPM packages use […]
Original post on velocipederider.com
velocipederider.com
January 18, 2026 at 7:01 PM
I got bored and reverse engineered how SCO #cpio is able to store such large files in their archives when the newc format only officially supports 4Gb file entries.
I am not a coder, so I just made some files with cpio from the Heirloom Toolset and looked at them in hexdump.
RPM packages use […]
I am not a coder, so I just made some files with cpio from the Heirloom Toolset and looked at them in hexdump.
RPM packages use […]
Shit, more real testing and I realised I miss understood how renumbering works with GNU cpio and BSD cpio (libarchive) does not renumber at all. 😱
I corrected the document!
I corrected the document!
January 18, 2026 at 12:06 AM
Shit, more real testing and I realised I miss understood how renumbering works with GNU cpio and BSD cpio (libarchive) does not renumber at all. 😱
I corrected the document!
I corrected the document!
Ever wondered about the inode trunctation in #cpio formats and what that might mean for the integrity of your archives on modern systems?
No? No, I didn't think so because that is nerdy as fuck!!! 🤓
Nonetheless, I typed this up. No need to… umm… thank me. 🤪 […]
No? No, I didn't think so because that is nerdy as fuck!!! 🤓
Nonetheless, I typed this up. No need to… umm… thank me. 🤪 […]
Original post on velocipederider.com
velocipederider.com
January 17, 2026 at 2:15 PM
Ever wondered about the inode trunctation in #cpio formats and what that might mean for the integrity of your archives on modern systems?
No? No, I didn't think so because that is nerdy as fuck!!! 🤓
Nonetheless, I typed this up. No need to… umm… thank me. 🤪 […]
No? No, I didn't think so because that is nerdy as fuck!!! 🤓
Nonetheless, I typed this up. No need to… umm… thank me. 🤪 […]
our hottest unix take is that cpio has a better user interface than tar
January 17, 2026 at 3:15 AM
our hottest unix take is that cpio has a better user interface than tar
on the whole cpio is much much better at doing one thing and doing it well. the whole `find | cpio -o` pipeline was strange to me at first but i am now a convert
January 12, 2026 at 8:53 PM
on the whole cpio is much much better at doing one thing and doing it well. the whole `find | cpio -o` pipeline was strange to me at first but i am now a convert
unpopular opinion: `cpio` is objectively superior to `tar` in almost every way
January 12, 2026 at 8:50 PM
unpopular opinion: `cpio` is objectively superior to `tar` in almost every way
Looks like I should be tweeting here more.
Twitter soft launched a new feature that integrates xAI with an image editing interface. Any photo you add to Twitter can be modified at the touch of a button.
Artists are leaving in droves!
Everyone else should consider deleting all their selfies.
Twitter soft launched a new feature that integrates xAI with an image editing interface. Any photo you add to Twitter can be modified at the touch of a button.
Artists are leaving in droves!
Everyone else should consider deleting all their selfies.
December 25, 2025 at 2:36 AM
Ok, if you need handling of extended attributes or special files types (character files, special files, sockets, named pipes, etc.) rar would fall down and something written with UNIX in mind like tar, cpio, afio, dar or rsync with a disk image would be much better.
But rar is much better than […]
But rar is much better than […]
Original post on velocipederider.com
velocipederider.com
December 18, 2025 at 2:40 PM
Ok, if you need handling of extended attributes or special files types (character files, special files, sockets, named pipes, etc.) rar would fall down and something written with UNIX in mind like tar, cpio, afio, dar or rsync with a disk image would be much better.
But rar is much better than […]
But rar is much better than […]
Been toying with the Torch Tx floppy's. Finally accepted that without re-compiling Unix it's unlikely the Gotek will ever work other than for Key Disk duty.
But I got a blank disk image that works great on the BlueSCSI. Had to remove files from an existing image which was mounted in Linux.
But I got a blank disk image that works great on the BlueSCSI. Had to remove files from an existing image which was mounted in Linux.
December 8, 2025 at 7:42 AM
Been toying with the Torch Tx floppy's. Finally accepted that without re-compiling Unix it's unlikely the Gotek will ever work other than for Key Disk duty.
But I got a blank disk image that works great on the BlueSCSI. Had to remove files from an existing image which was mounted in Linux.
But I got a blank disk image that works great on the BlueSCSI. Had to remove files from an existing image which was mounted in Linux.
Re: [PATCH v2 0/2] kbuild: add target to build a cpio containing m ... Summary not available
Interest | Match | Feed
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lkml.org
November 30, 2025 at 3:28 PM
Re: [PATCH] kbuild: add target to build a cpio containing modules Summary not available
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Origin
lkml.org
November 25, 2025 at 12:35 PM
What, no cpio archive? I can also take a StuffIt Expander file.
November 20, 2025 at 4:57 AM
What, no cpio archive? I can also take a StuffIt Expander file.
So, I managed to work out how to use cpio without destroying my Linux installs. Did it on a virtual machine this time. 😁
That means I can extract all the files from the Torch Unix disks. Yay! They're all basically cpio archives so this doesn't work to get files out of the boot disk or limpet test.
That means I can extract all the files from the Torch Unix disks. Yay! They're all basically cpio archives so this doesn't work to get files out of the boot disk or limpet test.
October 26, 2025 at 2:56 PM
So, I managed to work out how to use cpio without destroying my Linux installs. Did it on a virtual machine this time. 😁
That means I can extract all the files from the Torch Unix disks. Yay! They're all basically cpio archives so this doesn't work to get files out of the boot disk or limpet test.
That means I can extract all the files from the Torch Unix disks. Yay! They're all basically cpio archives so this doesn't work to get files out of the boot disk or limpet test.
A sign of the times in South LA:
Maher Commercial Realty sold 9825 S Broadway, a 1,857 sq. ft. former church on an 11,000 sq. ft. C2-1VL-CPIO, TOC Tier 3 lot.
Marketed as both a church reuse & development site, for $795K to an owner-user non-profit.
In today’s cycle, owner-users are redefining value
Maher Commercial Realty sold 9825 S Broadway, a 1,857 sq. ft. former church on an 11,000 sq. ft. C2-1VL-CPIO, TOC Tier 3 lot.
Marketed as both a church reuse & development site, for $795K to an owner-user non-profit.
In today’s cycle, owner-users are redefining value
October 15, 2025 at 7:28 PM
A sign of the times in South LA:
Maher Commercial Realty sold 9825 S Broadway, a 1,857 sq. ft. former church on an 11,000 sq. ft. C2-1VL-CPIO, TOC Tier 3 lot.
Marketed as both a church reuse & development site, for $795K to an owner-user non-profit.
In today’s cycle, owner-users are redefining value
Maher Commercial Realty sold 9825 S Broadway, a 1,857 sq. ft. former church on an 11,000 sq. ft. C2-1VL-CPIO, TOC Tier 3 lot.
Marketed as both a church reuse & development site, for $795K to an owner-user non-profit.
In today’s cycle, owner-users are redefining value
Your backups were filesystem-dependent, so like old-school block-based dump rather than file-based tar/cpio?
September 27, 2025 at 7:05 PM
Your backups were filesystem-dependent, so like old-school block-based dump rather than file-based tar/cpio?
そもそも cpio 知らなかったわ
September 17, 2025 at 2:13 AM
そもそも cpio 知らなかったわ
僕の環境で `$ man 1p pax` を実行すると、ちゃんと POSIX 版の pax のマニュアルが出てくるんだけど、肝心の実装が手元に存在しないのウケるな。`-x` オプションの選択肢もちゃんと cpio / pax / ustar と書かれている
September 17, 2025 at 1:34 AM
僕の環境で `$ man 1p pax` を実行すると、ちゃんと POSIX 版の pax のマニュアルが出てくるんだけど、肝心の実装が手元に存在しないのウケるな。`-x` オプションの選択肢もちゃんと cpio / pax / ustar と書かれている
POSIX がしたこと
・pax コマンドを作成、cpio, tar コマンドを廃止
・pax フォーマットを作成
GNU/Linux がしたこと
・pax コマンドを実装、cpio, tar コマンドはそのまま
・pax フォーマットを（pax コマンドではなく）tar コマンドに実装
・pax コマンドを作成、cpio, tar コマンドを廃止
・pax フォーマットを作成
GNU/Linux がしたこと
・pax コマンドを実装、cpio, tar コマンドはそのまま
・pax フォーマットを（pax コマンドではなく）tar コマンドに実装
September 17, 2025 at 1:29 AM
POSIX がしたこと
・pax コマンドを作成、cpio, tar コマンドを廃止
・pax フォーマットを作成
GNU/Linux がしたこと
・pax コマンドを実装、cpio, tar コマンドはそのまま
・pax フォーマットを（pax コマンドではなく）tar コマンドに実装
・pax コマンドを作成、cpio, tar コマンドを廃止
・pax フォーマットを作成
GNU/Linux がしたこと
・pax コマンドを実装、cpio, tar コマンドはそのまま
・pax フォーマットを（pax コマンドではなく）tar コマンドに実装
あー、こういう流れか
・POSIX.2-1992: cpio vs. tar 戦争を終わらせるために、pax コマンドを作ろう（オプションで cpio フォーマットか tar (ustar) フォーマットを選ぶ）
・POSIX.1-2001: tar (ustar) フォーマットを拡張して、pax フォーマットを作ろう
でも手元の pax コマンドはなんか前者で止まってる
・POSIX.2-1992: cpio vs. tar 戦争を終わらせるために、pax コマンドを作ろう（オプションで cpio フォーマットか tar (ustar) フォーマットを選ぶ）
・POSIX.1-2001: tar (ustar) フォーマットを拡張して、pax フォーマットを作ろう
でも手元の pax コマンドはなんか前者で止まってる
September 17, 2025 at 1:10 AM
あー、こういう流れか
・POSIX.2-1992: cpio vs. tar 戦争を終わらせるために、pax コマンドを作ろう（オプションで cpio フォーマットか tar (ustar) フォーマットを選ぶ）
・POSIX.1-2001: tar (ustar) フォーマットを拡張して、pax フォーマットを作ろう
でも手元の pax コマンドはなんか前者で止まってる
・POSIX.2-1992: cpio vs. tar 戦争を終わらせるために、pax コマンドを作ろう（オプションで cpio フォーマットか tar (ustar) フォーマットを選ぶ）
・POSIX.1-2001: tar (ustar) フォーマットを拡張して、pax フォーマットを作ろう
でも手元の pax コマンドはなんか前者で止まってる
Seems like the flash chip has multiple LZMA compressed regions, but the one at the beginning houses the kernel and a CPIO image that is loaded into RAM
September 15, 2025 at 8:30 PM
Seems like the flash chip has multiple LZMA compressed regions, but the one at the beginning houses the kernel and a CPIO image that is loaded into RAM
You catch it, you clean it!
The Andy Griffith Show 1960 - 1968 Opening and Closing Theme
www.youtube.com/watch?v=Cpio...
The Andy Griffith Show 1960 - 1968 Opening and Closing Theme
www.youtube.com/watch?v=Cpio...
The Andy Griffith Show 1960 - 1968 Opening and Closing Theme
YouTube video by TeeVees Greatest
www.youtube.com
September 14, 2025 at 1:10 AM
You catch it, you clean it!
The Andy Griffith Show 1960 - 1968 Opening and Closing Theme
www.youtube.com/watch?v=Cpio...
The Andy Griffith Show 1960 - 1968 Opening and Closing Theme
www.youtube.com/watch?v=Cpio...
fanm dmbn snvb abcv mvxc nczx bxpz vzop cpio xoui ziyu puty oyrt iter urwe yeqw twlq rqkl eljk wkhj qjgh lhfg kgdf jfsd hdas gsma fanm
September 6, 2025 at 12:29 AM
fanm dmbn snvb abcv mvxc nczx bxpz vzop cpio xoui ziyu puty oyrt iter urwe yeqw twlq rqkl eljk wkhj qjgh lhfg kgdf jfsd hdas gsma fanm