11-24-2010
File processing
bash-2.05$ vi file_read.sh
"file_read.sh" 9 lines, 97 characters
#!/bin/ksh
print "Enter the group name"
read gname
varA= grep "$gname::" group
print $varA
This is the scenario: I am trying to get a userid and groupname from user and trying to add the userid to the given group. Please advise how to do this in KSH
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LEARN ABOUT MOJAVE
net::server::daemonize
Net::Server::Daemonize(3) User Contributed Perl Documentation Net::Server::Daemonize(3)
NAME
Net::Server::Daemonize - Safe fork and daemonization utilities
SYNOPSIS
use Net::Server::Daemonize qw(daemonize);
daemonize(
'nobody', # User
'nobody', # Group
'/var/state/mydaemon.pid' # Path to PID file - optional
);
DESCRIPTION
This module is intended to let you simply and safely daemonize your server on systems supporting the POSIX module. This means that your
Perl script runs in the background, and it's process ID is stored in a file so you can easily stop it later.
EXPORTED FUNCTIONS
daemonize
Main routine. Arguments are user (or userid), group (or group id or space delimited list of groups), and pid_file (path to file).
This routine will check on the pid file, safely fork, create the pid file (storing the pid in the file), become another user and group,
close STDIN, STDOUT and STDERR, separate from the process group (become session leader), and install $SIG{INT} to remove the pid file.
In otherwords - daemonize. All errors result in a die. As of version 0.89 the pid_file is optional.
safe_fork
Block SIGINT during fork. No arguments. Returns pid of forked child. All errors result in a die.
set_user
Become another user and group. Arguments are user (or userid) and group (or group id or space delimited list of groups).
set_uid
Become another user. Argument is user (or userid). All errors die.
set_gid
Become another group. Arguments are groups (or group ids or space delimited list of groups or group ids). All errors die.
get_uid
Find the uid. Argument is user (userid returns userid). Returns userid. All errors die.
get_gid
Find the gids. Arguments are groups or space delimited list of groups. All errors die.
is_root_user
Determine if the process is running as root. Returns 1 or undef.
check_pid_file
Arguments are pid_file (full path to pid_file). Checks for existance of pid_file. If file exists, open it and determine if the
process that created it is still running. This is done first by checking for a /proc file system and second using a "ps" command (BSD
syntax). (If neither of these options exist it assumed that the process has ended) If the process is still running, it aborts.
Otherwise, returns true. All errors die.
create_pid_file.
Arguments are pid_file (full path to pid_file). Calls check_pid_file. If it is successful (no pid_file exists), creates a pid file
and stores $$ in the file.
unlink_pid_file
Does just that.
SEE ALSO
Net::Server. Net::Daemon, The Perl Cookbook Recipe 17.15.
AUTHORS
Jeremy Howard <j+daemonize@howard.fm>
Program flow, concepts and initial work.
Paul Seamons <paul@seamons.com>
Code rework and componentization. Ongoing maintainer.
LICENSE
This package may be distributed under the terms of either the
GNU General Public License
or the
Perl Artistic License
All rights reserved.
perl v5.18.2 2012-05-29 Net::Server::Daemonize(3)