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Shell Programming and Scripting
advanced awk
Post 302409288 by radoulov on Wednesday 31st of March 2010 03:03:10 PM
03-31-2010
Quote:
Code:
BEGIN { # do not put BEGIN on a line by itself
i = 0 # no need to initialize the counter,
# awk does this automatically
}
{
if (NF == 2) {
currgrp = $1
if ($2 ~ uname) {
netgroups[i] = currgrp # you shoud check if the username matches
i ++ # when NF == 2 too
}
}
else
{
if ($1 ~ uname) { # /uname/ matches litteral "uname"
netgroups[i] = currgrp
i ++
}
}
}
END { # do not put END on a line by itself
for(j = 0; j < i;j ++)
{
print netgroups[j] # j not i!
}
}|
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LEARN ABOUT SUNOS
uname
uname(2) System Calls uname(2) NAME
uname - get name of current operating system SYNOPSIS
#include <sys/utsname.h> int uname(struct utsname *name); DESCRIPTION
The uname() function stores information identifying the current operating system in the structure pointed to by name. The uname() function uses the utsname structure, defined in <sys/utsname.h>, whose members include: char sysname[SYS_NMLN]; char nodename[SYS_NMLN]; char release[SYS_NMLN]; char version[SYS_NMLN]; char machine[SYS_NMLN]; The uname() function returns a null-terminated character string naming the current operating system in the character array sysname. Simi- larly, the nodename member contains the name by which the system is known on a communications network. The release and version members further identify the operating system. The machine member contains a standard name that identifies the hardware on which the operating sys- tem is running. RETURN VALUES
Upon successful completion, a non-negative value is returned. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The uname() function will fail if: EFAULT The name argument points to an illegal address. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+ SEE ALSO
uname(1), sysinfo(2), sysconf(3C), attributes(5), standards(5) SunOS 5.10 21 Jul 1999 uname(2)