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Full Discussion: sed or awk editing help
Top Forums Shell Programming and Scripting sed or awk editing help Post 302467780 by Scrutinizer on Sunday 31st of October 2010 08:27:41 AM
Old 10-31-2010
I do not understand what you are referring to? A loop or running sed twice is necessary if you want to do a replace in two adjacent fields. This is because sed starts to do a replace at the character after where it stopped the last time. If you include the second comma in the pattern then the field that follows is not matched because the first comma was matched the previous time.

A couple of suggestions leave out the second comma, but then all whitespace gets deleted even in fields where the are other characters, which is not what the OP was asking.

I added the possibility of doing the replace not only in fields between comma's, but also for the two fields that have only one comma, namely the first and the last. Which is not precisely what the OP asked, but likely what he requires, since he speaks of fields separated by commas.

S.
Last edited by Scrutinizer; 10-31-2010 at 10:04 AM..
 

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LEARN ABOUT SUNOS

gshadow

GSHADOW(5)                                                 File Formats and Conversions                                                 GSHADOW(5)

NAME

       gshadow - shadowed group file

DESCRIPTION

       /etc/gshadow contains the shadowed information for group accounts.

       This file must not be readable by regular users if password security is to be maintained.

       Each line of this file contains the following colon-separated fields:

       group name
           It must be a valid group name, which exist on the system.

       encrypted password
           Refer to crypt(3) for details on how this string is interpreted.

           If the password field contains some string that is not a valid result of crypt(3), for instance ! or *, users will not be able to use a
           unix password to access the group (but group members do not need the password).

           The password is used when a user who is not a member of the group wants to gain the permissions of this group (see newgrp(1)).

           This field may be empty, in which case only the group members can gain the group permissions.

           A password field which starts with an exclamation mark means that the password is locked. The remaining characters on the line
           represent the password field before the password was locked.

           This password supersedes any password specified in /etc/group.

       administrators
           It must be a comma-separated list of user names.

           Administrators can change the password or the members of the group.

           Administrators also have the same permissions as the members (see below).

       members
           It must be a comma-separated list of user names.

           Members can access the group without being prompted for a password.

           You should use the same list of users as in /etc/group.

FILES

       /etc/group
           Group account information.

       /etc/gshadow
           Secure group account information.

SEE ALSO

       gpasswd(5), group(5), grpck(8), grpconv(8), newgrp(1).

shadow-utils 4.5                                                    01/25/2018                                                          GSHADOW(5)
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