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Full Discussion: Capture values using multiple regex patterns
Top Forums Shell Programming and Scripting Capture values using multiple regex patterns Post 302403701 by durden_tyler on Sunday 14th of March 2010 12:52:52 AM
Old 03-14-2010
Quote:
Originally Posted by adars1
... is it possible to get it in shell script, ...
Possible ? - Yes.
Possible without aggravation ? - No, or maybe, depending on how hardcore the shell scripter is.

Date arithmetic isn't really that simple in the shell. Search this forum for Perderabo's excellent suite of date calculation functions for the shell.

Quote:
...since i donot have access to perl.
Talk to your SysAdmin. Perl has been around for almost 23 years now, and is shipped with most of the *nix systems.

tyler_durden
 

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LEARN ABOUT XFREE86

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)
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