blob: 5262bc67cbe79958ebec4864db8449ab17320e18 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
The original Steve R. Bourne shell from the 7th edition Unix including
System III, 4.3BSD-Reno, Ultrix 3.1 and ``home made'' fixes and enhancements :
* `--' end of options added (sysIII). `set +x' and such added (sysIII).
`/etc/bsh_profile' (sysIII) and `$HOME/.bsh_profile' (unsw) are
sourced at login time if they exist. Initially, only the `.profile'
located in the current directory was sourced at login time if it
exists. They have been `bsh_' prefixed to avoid conflicts w/ the
standards `profiles' which can contains unsupported expressions
such as shell functions. negation (! or ^) in `[]' added (sysIII).
`${x:-x}' and similar expressions added (sysIII). '<<-' (aka strip
leading tab in here document) added (sysIII). `#' comments are
allowed in shell scripts (sysIII/reno), but not on the command line
(reno) ! `break N' and `continue N' fixed (sysIII/ultrix). `if...
then... [elif... [else...]] fi' fixed (reno). `test' (sysIII) and
`ulimit' (ultrix) builtins added.
* ANSI-fication to permit an almost warning free compilation (home made).
`union trenod' taken from 4.3BSD-Reno. better signal handling and
error recovery (sysIII/reno). better restricted shell (sysIII) and
IFS protection (reno).
* functions aren't supported and command line input is not 8 bit clean.
WWW: http://minnie.tuhs.org/UnixTree/V7/
|
