05-19-2010
Quote:
Originally Posted by
Ernst
... Basically what I am trying to do is to the following:
The output data for all the groups has 6 entries.But while most of the groups has only three entries filled, some groups have all 6 entries filled. What I want to do is Whenever the script reads the file and sees a group with only 3 entries filled, it needs to print the three rows that have data but strip the other three empty rows; for the groups with 6 entries filled, it just needs to print them out. ...
For your info, my input file format was as follows:
554.3=432
554.2=264
554.1=96
555.3=452
555.2=284
555.1=116
556.3=488
556.2=320
556.1=152
557.3=340
557.2=172
557.1=4
558.3=356
558.2=188
558.1=20
559.3=108
559.2=276
559.1=444
...
Firstly, the Perl one-liner posted earlier will *not* work for groups of 6 lines. It works *only* for groups of 3 lines.
Secondly, it may be beneficial if you could post some test data for groups of 3 lines as well as 6 lines. And post the output as well that shows what exactly is to be done for each group.
The input you've posted above is difficult to comprehend because it does not have the blank line that separates one group from the other.
tyler_durden
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LEARN ABOUT FREEBSD
getgrouplist
GETGROUPLIST(3) BSD Library Functions Manual GETGROUPLIST(3)
NAME
getgrouplist -- calculate group access list
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
getgrouplist(const char *name, gid_t basegid, gid_t *groups, int *ngroups);
DESCRIPTION
The getgrouplist() function reads through the group file and calculates the group access list for the user specified in name. The basegid is
automatically included in the groups list. Typically this value is given as the group number from the password file.
The resulting group list is returned in the array pointed to by groups. The caller specifies the size of the groups array in the integer
pointed to by ngroups; the actual number of groups found is returned in ngroups.
RETURN VALUES
The getgrouplist() function returns 0 on success and -1 if the size of the group list is too small to hold all the user's groups. Here, the
group array will be filled with as many groups as will fit.
FILES
/etc/group group membership list
SEE ALSO
setgroups(2), initgroups(3)
HISTORY
The getgrouplist() function first appeared in 4.4BSD.
BSD
October 26, 2014 BSD