You're using find to search directories, nice.
But then you're using the variable without checking if it's has one , none or more results.
Further, I assume that you want the variable $user_name to actualy contain (just) the "<username>", and not the string "username + <username>".
This said, you might want to take care of that, afterwhich you might want to use something like this:
As the string might become empty after removing the found string pattern from it's content ("username + <username>"), if it even finds anything - as in your current case.
This said, you might want to make sure where your find starts from.
I would also suggest to take care of multiple finds (tempfiles) within a a for loop.
This is my suggested handling for all dynamic (find, locate, *, ls, which, etc) variables.
First: me == noob. Whats a good resource for shell script info cause I'm having trouble finding good info.
I'm writing a shell script to automate the setup of a flash 'page flip'.
My current code is below.
the page flip takes an xml file of format
<content>
<pages... (1 Reply)
Hi all!
I know that environment variables can be set on the .bashrc file, but I need to set them from a sh script. I saw a lot of websites that teach this but it doesn't work for me.
#!/bin/sh
DEKTOP=$DESKTOP=:/home/rrodrigues/Desktop
export DESKTOP
if I do echo $DESKTOP returns me... (10 Replies)
oopps! I Meant "Define Variables within a UNIX Script"
What would be the best way to define a variable in a unix shell script so anyone who views this script doesn't know what value is assigned to that variable.
some other location...
a="/usr/lib/fileA"
Unix script...
sed... (5 Replies)
Hello Everyone
I need to create a script file which must append some lines to a target text file, I'm using sed for windows, the script file look like this:
{
a\
STRINGTABLE DISCARDABLE\
BEGIN\
5, 150 {a\
#define RC_SHELL, "%ID_SHELL%"\
#define RC_NAME, "%ID_NAME%"\
END
}
... (1 Reply)
Hi All,
I am using ETL tool Datastage and is installed on Linux environment. Few environment variables are set in datastage. Now my requirement is to use those environment variables in a unix script.
Is there any option I can do it?
Sugeestions from people working on datastage and linux... (1 Reply)
I'm pretty new to scripting in Korn shell so please forgive me...
What I'm trying to do is to create a script that calls multiple other ksh scripts and defines variables for text files.
I need it to define my user defined variables (file paths, date & time stamps, etc that are currently in... (1 Reply)
I have tried with the following:
csh -c 'source ~/.cshrc; exec bash' # works perfectly
(cat ~/.cshrc; echo exec bash) | csh # not working
And, using sed, I successfully retrieved the environment variables from ~/.cshrc
sed -rn 's/setenv\s+(\S+)\s+(.*)$/export \1=\2/p' ~/.cshrc
but now... (6 Replies)
how to store the count of queries in variables inside a filein shell script
my output :
filename
-------
variable1=result from 1st query
variable2=result from 2nd query
.
.
.
. (3 Replies)
Dear Shell script Experts,
I am working on shell script which is defined here, qsub_seq.csh . The purpose of this script is to read few input files (with defined starting index and last index) and make processing faster over server.
For some task, I had 1064 of input files, so I wrote another... (8 Replies)
Discussion started by: emily
8 Replies
LEARN ABOUT CENTOS
groupmems
GROUPMEMS(8) System Management Commands GROUPMEMS(8)NAME
groupmems - administer members of a user's primary group
SYNOPSIS
groupmems -a user_name | -d user_name | [-g group_name] | -l | -p
DESCRIPTION
The groupmems command allows a user to administer his/her own group membership list without the requirement of superuser privileges. The
groupmems utility is for systems that configure its users to be in their own name sake primary group (i.e., guest / guest).
Only the superuser, as administrator, can use groupmems to alter the memberships of other groups.
OPTIONS
The options which apply to the groupmems command are:
-a, --add user_name
Add an user to the group membership list.
If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.
-d, --delete user_name
Delete a user from the group membership list.
If the /etc/gshadow file exist, the user will be removed from the list of members and administrators of the group.
If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.
-g, --group group_name
The superuser can specify which group membership list to modify.
-h, --help
Display help message and exit.
-l, --list
List the group membership list.
-p, --purge
Purge all users from the group membership list.
If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.
-R, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.
SETUP
The groupmems executable should be in mode 2770 as user root and in group groups. The system administrator can add users to group groups to
allow or disallow them using the groupmems utility to manage their own group membership list.
$ groupadd -r groups
$ chmod 2770 groupmems
$ chown root.groups groupmems
$ groupmems -g groups -a gk4
CONFIGURATION
The following configuration variables in /etc/login.defs change the behavior of this tool:
MAX_MEMBERS_PER_GROUP (number)
Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name,
same password, and same GID).
The default value is 0, meaning that there are no limits in the number of members in a group.
This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS
groups are not larger than 1024 characters.
If you need to enforce such limit, you can use 25.
Note: split groups may not be supported by all tools (even in the Shadow toolsuite). You should not use this variable unless you really
need it.
FILES
/etc/group
Group account information.
/etc/gshadow
secure group account information
SEE ALSO chfn(1), chsh(1), passwd(1), groupadd(8), groupdel(8), useradd(8), userdel(8), usermod(8).
shadow-utils 4.1.5.1 05/25/2012 GROUPMEMS(8)