Shells

[Sundar_7]

Hi all,

Therotically how can we differentiate

between different shells.

Means,if some body ask U what is the

difference between ksh,csh and sh (posix shell)

I know there are some differences but

not able to exaclty theortically produce

it.

Please help me out

Sundar

[federico_3]

See below :
http://www.nscp.umd.edu/shells.html


Federico

[Cheryl Griffin]

Sundara
You can find this kind of information in various unix books, even on-line.

Here's a site that has a matrix that shows the differences between shells. http://members.tripod.com/~aviion/shell.htm

Check the man page also:
# man sh
There's a breakdown by shell.

[Richard Darling]

Sundara, A quick and dirty answer:

Bourne: oldest, most widely used, available on all UNIX boxes. doesn't have the following features:
command history, line editing, file name completion, alias command, or job control
does allow restrited shells

C: similar to C language for shell programming.
doesn't allow line editing or allow restricted shells. does have command history, fiel name completion, alias command and job control.

Korn: more features that the above two
POSIX: default shell for HP-UX
The Korn and POSIX shell are very similar, having all of the features mentined above.

Hope these notes I had from various sources are helpful...RD