The following script attempts to enumerate all users in all groups in the group file(GROUP) and echo the following information:
GROUP ---> USER
The script is as follows:
Code:
IFS=","
for GROUP in `ypcat -k group | cut -d" " -f1`
do
for USER in `ypcat -k group | grep $GROUP | cut -d":" -f4`
do
echo "$GROUP -------> $USER"
done
done
The unexpected result is that the group name is only printed. It appears that the outer loop variable loses scope inside of the inner loop.
Any ideas on why this occurs is greatly appreciated.
Last edited by vbe; 08-11-2011 at 10:17 AM..
Reason: code tags
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Discussion started by: SkySmart
3 Replies
LEARN ABOUT CENTOS
alter_group
ALTER GROUP(7) PostgreSQL 9.2.7 Documentation ALTER GROUP(7)NAME
ALTER_GROUP - change role name or membership
SYNOPSIS
ALTER GROUP group_name ADD USER user_name [, ... ]
ALTER GROUP group_name DROP USER user_name [, ... ]
ALTER GROUP group_name RENAME TO new_name
DESCRIPTION
ALTER GROUP changes the attributes of a user group. This is an obsolete command, though still accepted for backwards compatibility, because
groups (and users too) have been superseded by the more general concept of roles.
The first two variants add users to a group or remove them from a group. (Any role can play the part of either a "user" or a "group" for
this purpose.) These variants are effectively equivalent to granting or revoking membership in the role named as the "group"; so the
preferred way to do this is to use GRANT(7) or REVOKE(7).
The third variant changes the name of the group. This is exactly equivalent to renaming the role with ALTER ROLE (ALTER_ROLE(7)).
PARAMETERS
group_name
The name of the group (role) to modify.
user_name
Users (roles) that are to be added to or removed from the group. The users must already exist; ALTER GROUP does not create or drop
users.
new_name
The new name of the group.
EXAMPLES
Add users to a group:
ALTER GROUP staff ADD USER karl, john;
Remove a user from a group:
ALTER GROUP workers DROP USER beth;
COMPATIBILITY
There is no ALTER GROUP statement in the SQL standard.
SEE ALSO GRANT(7), REVOKE(7), ALTER ROLE (ALTER_ROLE(7))
PostgreSQL 9.2.7 2014-02-17 ALTER GROUP(7)