08-12-2012
Be careful when tinkering with system files! If usermod fails, there will be a reason for it. Please show usermod's error messages so the audience can analyse it.
Just adding a member to a group in /etc/group may totally ignore security tools like shadow (gshadow) or other system info on which your system depends.
As for your question: How do you supply the group to be appended to? In a variable as well?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
:confused:
I have a script that Cats a flat database file which contains 12 columns into sed. I want to add a 13th column which includes " ,2005-08-29 " * The date needs to be the current date.
This 13th column would be appended to the end of each line.
Does anyone have a clue... (5 Replies)
Discussion started by: Redg
5 Replies
2. Shell Programming and Scripting
Hi All,
I have been trying to format a file using sed. I can't seem to get the syntax right. I want to append the string from file1.txt to file1.csv with the final output file being file2.csv, but before the string is appended to the end of each line, first insert a comma.
Here is the sed... (2 Replies)
Discussion started by: cstovall
2 Replies
3. Shell Programming and Scripting
Hello,
I want to add string #REAL at the end of all lines that contain real numbers.
How to do this using sed ? (1 Reply)
Discussion started by: scotty_123
1 Replies
4. Shell Programming and Scripting
i am trying to append a 5 line SGML file(file1) with a 500,000 line SGML file (file2).
file1 is a template, so i wish to preserve.
i only want to add lines 5 to the end of file2.
i have:
cp file1 temp1
sed -n '5,$p' file2 >> temp1
when i check the tail of temp1, i consistantly find the... (3 Replies)
Discussion started by: smac
3 Replies
5. UNIX for Dummies Questions & Answers
I keep trying to append some astrix to the end of a line, but it keeps overwriting at the front of the line.
These are the originals
Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900
Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900
... (5 Replies)
Discussion started by: DrSammyD
5 Replies
6. UNIX for Dummies Questions & Answers
I want to append matched output and cat the results into an variable. but I've been running into problems. sed is printing result on to screen instead of appending the output to $CAPTURE. I'm stumped...how should i fix this?
contents of $TEST
10.0.0.1
10.0.0.2
10.0.0.3
10.0.0.4
expected... (5 Replies)
Discussion started by: jazzaddict
5 Replies
7. Shell Programming and Scripting
Hi,
Here is my piece of code used with sed in shell script:
sed -i '/<falsemodule-option>/ a\<LdapLogin>' myxmlfile
The problem that i am facing with the above is that in 'myxml' file i have mulitple instances of <falsemodule-option>
so when i execute the above sed command, it is appending... (10 Replies)
Discussion started by: sunrexstar
10 Replies
8. Shell Programming and Scripting
hello all,
First time post here. I have searched a bit but could not find an exact answer. I have about a week's experience of Sed and Awk, and am having fun, but am a little stuck.
I am reformatting an xml file into json format. I have got this far:
{"clients":
...and so on. What I want... (22 Replies)
Discussion started by: singerfc
22 Replies
9. UNIX for Dummies Questions & Answers
Hey all
I am trying to append a file called datebook.txt. I want to append the end of each line containing the name Fred with three ***. I believe I need to make the * loose its meta character meaning in addition to using the append command. I have tried several variations of this command and I... (3 Replies)
Discussion started by: citizencro
3 Replies
10. Shell Programming and Scripting
i have a number of java files containing
eg:
--------------myfile.java--------------
package zip.fun.myfiles;
import java.*
import something..;
import sdfdfdsa;
...
...
--------------------------------------------
Now I need to append / insert a line as follows:
... (10 Replies)
Discussion started by: linuxadmin
10 Replies
LEARN ABOUT XFREE86
newgrp
NEWGRP(1) User Commands NEWGRP(1)
NAME
newgrp - log in to a new group
SYNOPSIS
newgrp [-] [group]
DESCRIPTION
The newgrp command is used to change the current group ID during a login session. If the optional - flag is given, the user's environment
will be reinitialized as though the user had logged in, otherwise the current environment, including current working directory, remains
unchanged.
newgrp changes the current real group ID to the named group, or to the default group listed in /etc/passwd if no group name is given.
newgrp also tries to add the group to the user groupset. If not root, the user will be prompted for a password if she does not have a
password (in /etc/shadow if this user has an entry in the shadowed password file, or in /etc/passwd otherwise) and the group does, or if
the user is not listed as a member and the group has a password. The user will be denied access if the group password is empty and the user
is not listed as a member.
If there is an entry for this group in /etc/gshadow, then the list of members and the password of this group will be taken from this file,
otherwise, the entry in /etc/group is considered.
CONFIGURATION
The following configuration variables in /etc/login.defs change the behavior of this tool:
SYSLOG_SG_ENAB (boolean)
Enable "syslog" logging of sg activity.
FILES
/etc/passwd
User account information.
/etc/shadow
Secure user account information.
/etc/group
Group account information.
/etc/gshadow
Secure group account information.
SEE ALSO
id(1), login(1), su(1), sg(1), gpasswd(1), group(5), gshadow(5).
shadow-utils 4.5 01/25/2018 NEWGRP(1)