03-30-2017
- /.../ is a regular expression; c.f. man awk: "Regular expressions are enclosed in slashes". A single / is pointless.
^ anchors the regex at begin-of-line (or string).
.* represents "any char, zero or more times".
= terminates this special regex. As we are sure there's only ONE = in $1, no additional measures need to be taken.
| is the alternation operator ("or"), so multiple regexes can be matched
- Yes, that's why I used two function calls: for different results. If you accept leading and trailing spaces, try gsub (/^.*=|\)|\(/, " ", $1) and drop the sub.
- Semicolons separate commands in awk, as do line feeds. gsub modifies $1, then sub works on that mod'd $1
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LEARN ABOUT OPENSOLARIS
groups
groups(1) User Commands groups(1)
NAME
groups - print group membership of user
SYNOPSIS
groups [user]...
DESCRIPTION
The command groups prints on standard output the groups to which you or the optionally specified user belong. Each user belongs to a group
specified in /etc/passwd and possibly to other groups as specified in /etc/group. Note that /etc/passwd specifies the numerical ID (gid)
of the group. The groups command converts gid to the group name in the output.
EXAMPLES
The output takes the following form:
example% groups tester01 tester02
tester01 : staff
tester02 : staff
example%
FILES
/etc/passwd
/etc/group
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
group(4), passwd(4), attributes(5)
SunOS 5.11 14 Sep 1992 groups(1)