04-22-2006
If you have permissions, you can copy the shell to the "incorrect location"... what is the full path of the shell in /etc/passwd now?
9 More Discussions You Might Find Interesting
1. HP-UX
Hello Everyone,
I am a newbie in unix. I was practicing shell scripts on hp unix machine.
I changed my current login shell (Korn) to Bourne shell giving the following command.
$ chsh username /usr/bash
I am using secure shell client for accessing the hp ux server.
After which i... (4 Replies)
Discussion started by: hardesh
4 Replies
2. Linux
Hi
I tried with bash --login option. but the output is
siva:~$ bash --login
siva:~$
is there any way to make the shell ask for user id and password ( and login as different user instead of using sudo / su )
Thx in advance
Siva (3 Replies)
Discussion started by: Sivaswami
3 Replies
3. UNIX for Dummies Questions & Answers
I've screwed something up in my sshd_config apparently, because I can't ssh with root anymore.
I had disabled root login for security reasons, but then my ssh credentials with full administrative privelges stopped working. So then I reenabled root login (and reset ssh), but root now isn't... (3 Replies)
Discussion started by: cquarry
3 Replies
4. UNIX for Dummies Questions & Answers
Hello,
I have a big problem and no idea how to solve it.
I was looking up commands in /bin with 'man' as I found 'sh'.
In mistake I started the command.
Now after that I can not input the character 's' in shell anymore!
Even after restarting system the problem is still there.
Mysterious... (7 Replies)
Discussion started by: daWonderer
7 Replies
5. Windows & DOS: Issues & Discussions
hello
obviously something got messed up and I can't login to my Vista account anymore. the password was automatically disabled hence it was directly booting into vista. then I installed openSSH and created a password for the user. But vista login doesn't recognize this password and now I can't... (6 Replies)
Discussion started by: milhan
6 Replies
6. Shell Programming and Scripting
Hi,
I recently would like to write a shell script that
1. Runs in the background (can be done with "&", but i'd be happy for other solutions to keep programs running)
2. Does its stuff
3 THEN checks a specified folder for a size change over time (say, each 5 seconds. AND ONLY continues with... (9 Replies)
Discussion started by: pasc
9 Replies
7. Slackware
We used to use Slackware, but then moved all our servers to Ubuntu Linux.
Does anyone use Slackware anymore? (8 Replies)
Discussion started by: Neo
8 Replies
8. UNIX for Dummies Questions & Answers
Options::
A)$shell
B)echo $ bash
C)echo $ O
D)$ O (1 Reply)
Discussion started by: raghugowda
1 Replies
9. Shell Programming and Scripting
Hello all,
for security reasons my compagny imposes that my script be launch remotly via ssh under the users login shell.
So serverA launches the ssh command to serverB which has a local user with my script as a login shell.
Local script works like a charm on his own.
serverB$ grep... (20 Replies)
Discussion started by: maverick72
20 Replies
rsh(1M) System Administration Commands rsh(1M)
NAME
rsh, restricted_shell - restricted shell command interpreter
SYNOPSIS
/usr/lib/rsh [-acefhiknprstuvx] [argument...]
DESCRIPTION
rsh is a limiting version of the standard command interpreter sh, used to restrict logins to execution environments whose capabilities are
more controlled than those of sh (see sh(1) for complete description and usage).
When the shell is invoked, it scans the environment for the value of the environmental variable, SHELL. If it is found and rsh is the file
name part of its value, the shell becomes a restricted shell.
The actions of rsh are identical to those of sh, except that the following are disallowed:
o changing directory (see cd(1)),
o setting the value of $PATH,
o pecifying path or command names containing /,
o redirecting output (> and >>).
The restrictions above are enforced after .profile is interpreted.
A restricted shell can be invoked in one of the following ways:
1. rsh is the file name part of the last entry in the /etc/passwd file (see passwd(4));
2. the environment variable SHELL exists and rsh is the file name part of its value; the environment variable SHELL needs to be set in the
.login file;
3. the shell is invoked and rsh is the file name part of argument 0;
4. the shell is invoke with the -r option.
When a command to be executed is found to be a shell procedure, rsh invokes sh to execute it. Thus, it is possible to provide to the end-
user shell procedures that have access to the full power of the standard shell, while imposing a limited menu of commands; this scheme
assumes that the end-user does not have write and execute permissions in the same directory.
The net effect of these rules is that the writer of the .profile (see profile(4)) has complete control over user actions by performing
guaranteed setup actions and leaving the user in an appropriate directory (probably not the login directory).
The system administrator often sets up a directory of commands (that is, /usr/rbin) that can be safely invoked by a restricted shell. Some
systems also provide a restricted editor, red.
EXIT STATUS
Errors detected by the shell, such as syntax errors, cause the shell to return a non-zero exit status. If the shell is being used non-
interactively execution of the shell file is abandoned. Otherwise, the shell returns the exit status of the last command executed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
intro(1), cd(1), login(1), rsh(1), sh(1), exec(2), passwd(4), profile(4), attributes(5)
NOTES
The restricted shell, /usr/lib/rsh, should not be confused with the remote shell, /usr/bin/rsh, which is documented in rsh(1).
SunOS 5.10 1 Nov 1993 rsh(1M)