NEWGRP(1) BSD General Commands Manual NEWGRP(1)NAME
newgrp -- change to a new group
SYNOPSIS
newgrp [-l] [group]
DESCRIPTION
The newgrp utility creates a new shell execution environment with modified real and effective group IDs.
The options are as follows:
-l Simulate a full login. The environment and umask are set to what would be expected if the user actually logged in again.
If the group operand is present, a new shell is started with the specified effective and real group IDs. The user will be prompted for a
password if they are not a member of the specified group.
Otherwise, the real, effective and supplementary group IDs are restored to those from the current user's password database entry.
EXIT STATUS
The newgrp utility attempts to start the shell regardless of whether group IDs were successfully changed.
If an error occurs and the shell cannot be started, newgrp exits >0. Otherwise, the exit status of newgrp is the exit status of the shell.
SEE ALSO csh(1), groups(1), login(1), sh(1), su(1), umask(1), group(5), passwd(5), environ(7)STANDARDS
The newgrp utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
A newgrp utility appeared in Version 6 AT&T UNIX.
BUGS
Group passwords are inherently insecure as there is no way to stop users obtaining the crypted passwords from the group database. Their use
is discouraged.
BSD May 23, 2002 BSD
Check Out this Related Man Page
newgrp(1) General Commands Manual newgrp(1)NAME
newgrp - change effective group ID sg - execute command with different group ID
SYNOPSIS
newgrp [-l] [group]
sg group -c command
DESCRIPTION
The newgrp command changes the user's real and effetive group ID by replacing the current shell with a new shell. A new shell is launched
even if an error occours.
A password is requested if the group has a password and the user is not listed in the group file as being a member of that group. The pass-
word can be changed with the gpasswd(1) command.
If the new effective group ID is not in the supplementary group list, newgrp will add the new group ID to the supplementary list, too.
With no operands and options, newgrp changes the user's group IDs (real and effective) back to the group specified in password and group
file.
The sg command works like the newgrp command, except that it executes the given command with /bin/sh and upon exit the group ID of the cur-
rent shell is not changed.
OPTIONS -l, --login
reinitialize the environment as if the user logged in.
--help Print a help list.
-u, --usage
Print a short usage message.
-v, --version
Print program version.
SEE ALSO gpasswd(1), group(5), passwd(1), passwd(5), su(1)AUTHOR
Thorsten Kukuk <kukuk@suse.de>
pwdutils April 2004 newgrp(1)
i require a utility that identifies all users currently logged into the system. It should create a file called logfile which contains a list of usernames together with a count of how many login sessions they are currently running, for example
coc9io : 1
hbh8jd : 3
dg7hy : 1
root : 4
it... (3 Replies)
Heyo all,
I'm looking for the most effective way to capture the text in between a set of parenthesis.
For example, my input is this(IBM WebSphereMQ Queue Manager Status):
QMNAME(Q1) STATUS(Ended immediately)
QMNAME(Q2) ... (7 Replies)
I'm hoping this is a pretty simple question. I have a problem were memebers of a group can't delete or overwrite a file. The box is setup several users all part of the same group. Now default umask is 002. The problem I run into is there are processes that add to, del, and over write files. ... (3 Replies)
I know that in order to get a real user name I should use the following command: cut -d: -f5 /etc/passwd. But how can I get the real user name for those users who are currently logged in to the system??? :confused: Can somebody help me??? (3 Replies)
I have two spreadsheet files (A, B). Each has many rows with IDs. First, I want to find out the contents in both files with common IDs. Second, I want find the contents which only exist in A not B.
Thanks in advance! (5 Replies)
Hi All,
I have created a shell utility that runs various database jobs and then mail the output of the database jobs to the customers. This is a generic utility and executes almost 15 reports and sends the results out. To send the attachment I use uuencode. This had been working fine till... (4 Replies)
not sure if it's called "group by" , but what i'm going to do is like this:
i have a file below:
192.168.1.10
192.168.1.10
192.168.1.10
192.168.1.11
192.168.1.15
192.168.1.15
192.168.1.20
192.168.1.22
then i hope to get the result like this:
192.168.1.10 : 3
192.168.1.11 : 1... (6 Replies)
Hi All,
I am new to this forumn as well to the UNIX, I have basic knowledge of UNIX which I studied some years ago, now I have to do some shell scripting to load data into Oracle database using sqlldr utility, whcih I am able to do. I have a requirement where I need to do following operation.
I... (10 Replies)
Hi
I'd like to extract, from a text file, the strings starting with "The Thing" and only composed of words with a capital first letter and apostrophes, like for example:
"The Thing I Only" from "those are the The Thing I Only go for whatever."
or
"The Thing That Are Like Men's Eyewear" ... (7 Replies)
Hi,
I have manually changed umak value by umask 0033 , After that i would like to change umask value into 0022 through shell scripting..
But it is changing while running the script. Once come out from script, it has not changed ...
Ex:
>umask
0033
>./1.sh
0022
>umask
0033
plz Any... (4 Replies)
Dear friends,
I have two files. One with all IDs(in a single field) . And another with data(of which say field 5 is ID). I want to create an array of IDs using first file and
while reading second file if the ID appears in the array I need to print $0 else skip.
After a long gap I am... (6 Replies)
I have a file
1|2|3|4
a|b|c|d
1|2
3|4
a|
b|
c|
d|
The file should have 4 fields to load into a database. The file may have cr, lf, or end of line characters.
What I want to see as output is
1|2|3|4
a|b|c|d
1|23|4
a|b|c|d
I have tried (17 Replies)
I have a handful of users who can't 'newgrp' to one specific group from Solaris 9 and 10 nodes and always get this prompt:
newgrp: Password:
We never get prompted by 20+ other groups and this group never prompts for a password from Red Hat Linux nodes. Authentication comes from AD and there's... (4 Replies)
Hello All,
I saw this problem on one of the forum and solved it using group-by in oracle sql, though I am a bit curious to implement it using shell script :
There is a file having number of operations :
Opeation,Time-Taken
operation1,83621
operation2,72321
operation3,13288... (11 Replies)