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Full Discussion: Command line overwrite
Operating Systems SCO Command line overwrite Post 303031166 by Don Cragun on Friday 22nd of February 2019 10:16:20 AM
Old 02-22-2019
Telling us that you're using /bin/sh without telling us what operating system you're using doesn't really tell us all that much. On many systems /bin/sh is a link to another shell (e.g., bash, dash, or ksh). On at least one system /bin/sh is an honest to God 1980's Bourne shell. (When starting a thread on unix.com, please always tell us what operating system and shell you're using. Having some idea about the environment you're using will help us give you answers that stand a better chance of working in your environment.) Unfortunately, I have no idea what shell underlies /bin/sh on SCO systems.

On systems where /bin/sh is a link to a POSIX standards-conforming shell, you could try issuing the command:
Code:
set -o vi

to turn on vi command line editing mode. Once that has been done, if you hit the <escape> key while entering a command, you can use the usual vi editor commands to erase, replace, insert, and substitute text on that line and then hitting the <enter> or <retturn> key will submit that line to the shell for processing.
 

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LEARN ABOUT SUNOS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The  following  default	shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
       /bin/tcsh,  /bin/zsh,  /sbin/jsh,  /sbin/sh,  /usr/bin/bash,  /usr/bin/csh,  /usr/bin/jsh,  /usr/bin/ksh,  /usr/bin/pfcsh,  /usr/bin/pfksh,
       /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.

       Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).

FILES

       /etc/shells	       lists shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.10							    4 Jun 2001								 shells(4)
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