No concurrent login Post: 33860

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Can someone guide me in telling me what is a good definition of concurrent users. Is there a website I can go to to get this definition?

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Hi I am fairly new to the Unix environment and need to understand how Unix handles concurrent access to files and how it differs to Win NT. Any help would be greatly appriciated :)

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Hi I have a ksh that can have multiple instances running at the same time. The script (each instance) uses the SAME log file to write to. Should this cause a problem or is the ksh clever enough to queue write requests to the file? Thanks. GMMIKE

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We have a very large text file..contains almost 100K lines. We want to process this file to generate another text file as per our data requirement. As for now the parsing of data takes 20-25 mins each , for 100K lines. the current script uses : While Read Each Line do parsing.. Done ...

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Hi, on normal (non concurrent) vgs, it's possible to extend a lun on san-storage , and use chvg -g to rewrite vgda, and use disks with the new size for lvm operations is the same procedure possbile on a hacmp-cluster (2 node in our case) with concurrent vgs in active/passive mode? cheers...

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Hi all, I have a folder with sql files that need to be inserted in a DB with SQL*Plus. The thing is that it takes too long to insert them all one by one, so I want to insert them five at a time. Currently what I use is this: for $FILENAME in *.sql do sqlplus -s $DBUSER@$SID << EOF ...

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Increase concurrent logins?

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LEARN ABOUT MINIX

chsh

CHSH(1)                                                            User Commands                                                           CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
           Display help message and exit.

       -R, --root CHROOT_DIR
           Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

       -s, --shell SHELL
           The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
           User account information.

       /etc/shells
           List of valid login shells.

       /etc/login.defs
           Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

shadow-utils 4.5                                                    01/25/2018                                                             CHSH(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Definition of Concurrent Users

Discussion started by: mpshaw

2. Filesystems, Disks and Memory

concurrent file access

Discussion started by: beechwood

3. Shell Programming and Scripting

threads - concurrent processing

Discussion started by: siva_jm

4. Shell Programming and Scripting

Concurrent writing to file

Discussion started by: GNMIKE