<tool, file format> ("Shell archive", after ar and tar) Any of the many Unix programs that creates a flattened representation of one or more files, with the unique property that it can be unflattened (the original files extracted) merely by feeding it through a standard Unix shell. The output of shar, known as a "shar file" or "sharchive", can be distributed to anyone running Unix, and no special unpacking software is required. Sharchives are intriguing in that they are typically created by shell scripts; the script that produces sharchives is thus a script which produces self-unpacking scripts, which may themselves contain scripts. The disadvantage of sharchives are that they are an ideal venue for Trojan horse attacks and that, for recipients not running Unix, no simple un-sharchiving program is possible; sharchives can and do make use of arbitrarily-powerful shell features and other Unix commands. Different implementations of shar vary in sophistication. Some just uuencode each input file and output commands to uudecode the result, others include extensive checking to make sure the files have been transferred without corruption and that all parts of a multi-file sharchive have been unpacked. The unshar utility strips off mail and news headers before passing the remainder of its input to sh. (1996-10-18)

In the Unix operating system, shar (an abbreviation of shell archive) is an archive format created with the Unix shar utility. A shar file is a type of self-extracting archive, because it is a valid shell script, and executing it will recreate the files.

A Unix utility that removes e-mail and news header lines from its input, and feeds the remainder (which is presumed to be a shar file) to /bin/sh to unpack it. unshar is designed for unpacking archives directly from the news or mail systems simply by piping a message into it.

Sajjad Shar (Sindhi: سجاد شر) (born 1 March 1986), is the current Secretary General of banned Jeay Sindh Muttahida Mahaz; A political organization working for freedom of Sindhudesh from occupation of Pakistan and was first president of JSMM's student wing Jeay Sindh Students' Federation (JSSF) & was former youngest president of Jeay Sindh Qoumi Mahaz's student wing. currently state had nominated him in several cases of treason and he is one of the underground leader of JSMM.

Jalaluddin Shar is a small village located in Taluka Faiz Ganj of Khairpur district, Sindh province, Pakistan. It is located near the town Bhangu Behan.

Matochkin Strait or Matochkin Shar () is a strait, structurally a fjord, between the Severny and Yuzhny Islands of Novaya Zemlya. It connects the Barents Sea and the Kara Sea.

Chris Shar (born Christopher Joshua Shar, November 14, 1978) is an American multi-instrumentalist and vocalist.

Harthamah Shar Bamiyan () was a ninth century personage and provincial governor for the Abbasid Caliphate.

Haji Jalal Din Shar is a village in the Union Council of Hindyari, tehsil Thari Mirwah. It is located at a distance of 5.