Shar - Revision history

Anonymoususer852: Expand on shar variances, and suggest running shar inside a virtualized environment.

2025-07-29T17:46:21Z

Expand on shar variances, and suggest running shar inside a virtualized environment.

Dexvertbot: Change telparia.com samples link to template

2023-12-28T02:55:32Z

Change telparia.com samples link to template

Sembiance: /* Sample files */

2022-04-30T20:49:19Z

‎Sample files

Jsummers: PRONOM

2018-06-18T12:16:57Z

PRONOM

Jsummers at 16:22, 19 January 2014

2014-01-19T16:22:07Z

Jsummers at 03:01, 24 December 2013

2013-12-24T03:01:36Z

Jsummers at 15:02, 21 December 2013

2013-12-21T15:02:36Z

Dan Tobias: Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions={{ext|shar}} }} '''shar''' is a self-extracting archive format for Unix-type systems. It encodes a group of ..."

2012-12-21T13:38:47Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions={{ext|shar}} }} '''shar''' is a self-extracting archive format for Unix-type systems. It encodes a group of ..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Archiving
|extensions={{ext|shar}}
}}

'''shar''' is a self-extracting archive format for Unix-type systems. It encodes a group of files in a text-based format embedded in a shell file which may be executed directly from the command line in order to re-create the files that were archived.

== References ==
* [[Wikipedia:shar|Wikipedia article]]
* [http://linux.die.net/man/1/shar Linux man page]

@@ Line 8: / Line 8: @@
 '''shar''' is a self-extracting archive format for Unix-type systems. It encodes a group of files in a text-based format embedded in a [[Bourne shell script|shell script]] which may be executed directly from the command line in order to re-create the files that were archived.
-There are many variant forms of shar archives, and there is no simple algorithm to extract files from all of them. Theoretically, it could require the full power of a Unix shell program, and the availability of every common Unix utility program.
+There are many variant forms of shar archives, and there is no simple algorithm to extract files from all of them. Theoretically, it could require the full power of a Unix shell program, and the availability of every common Unix utility program. Variance in the environment that was used to create the shar file can result in receiving mixed results when it is to be extracted under a different environment, e.g. a shar file created under *BSD may produce warnings about <code>touch</code> syntax not supported under Linux, if the shar file contains lines containing <code>touch -am ...</code>, or legacy timestamp format, <code>MODYYYRHHMM</code>, where <code>MO</code> represents month, <code>DY</code> represents day, <code>YR</code> represents year, <code>HH</code> represents the hour in 24 hour format, and <code>MM</code> represents minutes, in numerical format, and year being the last two digits, e.g. <code>81</code> would make it <code>1981</code>.
-'''Security warning''': The usual ways of extracting from shar archives involve executing arbitrary code contained in the shar file.
+'''Security warning''': The usual ways of extracting from shar archives involve executing arbitrary code contained in the shar file. It is wiser to extract shar files inside a virtualized environment, with the appropriate guest operating system, e.g. FreeBSD.
 == Examples ==

@@ Line 28: / Line 28: @@
 * http://ftp.gnu.org/gnu/tar/ → *.shar*
 * http://cd.textfiles.com/carousel344/MACTOSH/UNIX/ → *.SHA
-* https://telparia.com/fileFormatSamples/archive/shar/
+* {{DexvertSamples|archive/shar}}
 == References ==
 * [[Wikipedia:shar|Wikipedia article]]
 * Linux man pages: [http://linux.die.net/man/1/shar shar], [http://linux.die.net/man/1/unshar unshar]

@@ Line 28: / Line 28: @@
 * http://ftp.gnu.org/gnu/tar/ → *.shar*
 * http://cd.textfiles.com/carousel344/MACTOSH/UNIX/ → *.SHA
 == References ==
 * [[Wikipedia:shar|Wikipedia article]]
 * Linux man pages: [http://linux.die.net/man/1/shar shar], [http://linux.die.net/man/1/unshar unshar]

@@ Line 4: / Line 4: @@
 |subcat=Archiving
 |extensions={{ext|shar}}, {{ext|sha}}
 }}
 '''shar''' is a self-extracting archive format for Unix-type systems. It encodes a group of files in a text-based format embedded in a [[Bourne shell script|shell script]] which may be executed directly from the command line in order to re-create the files that were archived.

@@ Line 1: / Line 1: @@
 {{FormatInfo
 |formattype=electronic
 |subcat=Archiving
-|extensions={{ext|shar}}
+|extensions={{ext|shar}}, {{ext|sha}}
 }}
 '''shar''' is a self-extracting archive format for Unix-type systems. It encodes a group of files in a text-based format embedded in a [[Bourne shell script|shell script]] which may be executed directly from the command line in order to re-create the files that were archived.
@@ Line 25: / Line 26: @@
 == Sample files ==
 * http://ftp.gnu.org/gnu/tar/ → *.shar*
 == References ==
 * [[Wikipedia:shar|Wikipedia article]]
 * Linux man pages: [http://linux.die.net/man/1/shar shar], [http://linux.die.net/man/1/unshar unshar]