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Operating Systems HP-UX pwage-hpux-T for Trusted HPUX servers Post 302507631 by methyl on Thursday 24th of March 2011 11:00:16 AM
Some points.

The normal secondary delimiter in the /etc/passwd comments field is a comma. Don't try a colon - it will corrupt the passwd file. The "usermod" command should stop you creating an invalid passwd file.

Quote:
cat /etc/passwd | grep $i |
This is a dodgy construct because it can give false matches in any field. In the simple case, consider usernames called "fred", "freda" and "alfred". One extreme case would be a username called "home".
A safer version in the style of your script:
Code:
grep \^${i}: /etc/passwd |

On many O/S the "for i in <open ended list>" construct will collapse when the command line becomes too long for the CLI.


Just for interest in non-trusted HP-UX you can get all the base information for this type of script from the command:
Code:
logins -xto


Last edited by methyl; 03-24-2011 at 12:16 PM..
 
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MKNOD(8)						    BSD System Manager's Manual 						  MKNOD(8)

NAME
mknod -- make device special file SYNOPSIS
mknod [-F format] name [c | b] major minor [-F format] name [c | b] major unit subunit name [c | b] number name [p] DESCRIPTION
The mknod command creates device special files. Normally the shell script /dev/MAKEDEV is used to create special files for commonly known devices; it executes mknod with the appropriate arguments and can make all the files required for the device. To make nodes manually, the required arguments are: name Device name, for example ``sd'' for a SCSI disk on an HP300 or a ``pty'' for pseudo-devices. b | c | p Type of device. If the device is a block type device such as a tape or disk drive which needs both cooked and raw special files, the type is b. All other devices are character type devices, such as terminal and pseudo devices, and are type c. To create named pipes the type p can be used. major The major device number is an integer number which tells the kernel which device driver entry point to use. To learn what major device number to use for a particular device, check the file /dev/MAKEDEV to see if the device is known, or check the system depen- dent device configuration file: ``/usr/src/sys/conf/device.architecture'' (for example device.hp300). minor The minor device number tells the kernel which one of several similar devices the node corresponds to; for example, it may be a spe- cific serial port or pty. unit and subunit The unit and subunit numbers select a subset of a device; for example, the unit may specify a particular SCSI disk, and the subunit a partition on that disk. (Currently this form of specification is only supported by the bsdos format, for compatibility with the BSD/OS mknod(8) .) Device numbers for different operating systems may be packed in a different format. To create device nodes that may be used by such an oper- ating system (e.g. in an exported file system used for netbooting), the -F option is used. The following formats are recognized: native, 386bsd, 4bsd, bsdos, freebsd, hpux, isc, linux, netbsd, osf1, sco, solaris, sunos, svr3, svr4 and ultrix. Alternatively, a single opaque device number may be specified. SEE ALSO
mkfifo(1), mkfifo(2), mknod(2), MAKEDEV(8) HISTORY
A mknod command appeared in Version 6 AT&T UNIX. The -F option appeared in NetBSD 1.4. NetBSD 1.4 September 11, 1998 NetBSD 1.4

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