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Full Discussion: Data mining a text file.
Top Forums Shell Programming and Scripting Data mining a text file. Post 302204867 by akbar on Thursday 12th of June 2008 06:27:39 PM
Old 06-12-2008
Data mining a text file.

I'm auditing UID consistency across our hosts, and have created the following datafile, consisting of four fields. I would like to get a count of the combination of the last two fields. ie: I would like to find out how many instances there are of "root 0" and how many of "uucp 5", for every line in the file. I know basic perl and basic awk, but can't get my head around how to do this.

Can anyone offer advice?

thank you in advance


UID: crfw root 0
UID: crfw daemon 1
UID: crfw bin 2
UID: crfw sys 3
UID: crfw adm 4
UID: crfw lp 71
UID: crfw uucp 5
UID: crfw nuucp 9
UID: crfw smmsp 25
UID: crfw listen 37
UID: crfw gdm 50
UID: crfw webservd 80
UID: crfw nobody 60001
UID: crfw noaccess 60002
UID: creb root 0
UID: creb daemon 1
UID: creb bin 2
UID: creb sys 3
UID: creb adm 4
UID: creb lp 71
UID: creb uucp 5
UID: creb nuucp 9
UID: creb smmsp 25
UID: creb listen 37
UID: creb gdm 50
UID: creb webservd 80
UID: creb nobody 60001
UID: creb noaccess 60003

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fmthard(1M)															       fmthard(1M)

fmthard - populate label on hard disks SYNOPSIS
SPARC fmthard -d data | -n volume_name | -s datafile [-i] /dev/rdsk/c? [t?] d?s2 fmthard -d data | -n volume_name | -s datafile [-i] /dev/rdsk/c? [t?] d?s2 The fmthard command updates the VTOC (Volume Table of Contents) on hard disks and, on systems, adds boot information to the Solaris fdisk partition. One or more of the options -s datafile, -d data, or -n volume_name must be used to request modifications to the disk label. To print disk label contents, see prtvtoc(1M). The /dev/rdsk/c?[t?]d?s2 file must be the character special file of the device where the new label is to be installed. On systems, fdisk(1M) must be run on the drive before fmthard. If you are using an system, note that the term ``partition'' in this page refers to slices within the fdisk partition on machines. Do not confuse the partitions created by fmthard with the partitions created by fdisk. The following options are supported: -d data The data argument of this option is a string representing the information for a particular partition in the current VTOC. The string must be of the format part:tag:flag:start:size where part is the partition number, tag is the ID TAG of the partition, flag is the set of permission flags, start is the starting sector number of the partition, and size is the number of sectors in the partition. See the description of the datafile below for more information on these fields. -i This option allows the command to create the desired VTOC table, but prints the information to standard output instead of modifying the VTOC on the disk. -n volume_name This option is used to give the disk a volume_name up to 8 characters long. -s datafile This option is used to populate the VTOC according to a datafile created by the user. If the datafile is "-", fmthard reads from standard input. The datafile format is described below. This option causes all of the disk par- tition timestamp fields to be set to zero. Every VTOC generated by fmthard will also have partition 2, by convention, that corresponds to the whole disk. If the input in datafile does not specify an entry for partition 2, a default partition 2 entry will be created auto- matically in VTOC with the tag V_BACKUP and size equal to the full size of the disk. The datafile contains one specification line for each partition, starting with partition 0. Each line is delimited by a new-line character ( ). If the first character of a line is an asterisk (*), the line is treated as a com- ment. Each line is composed of entries that are position-dependent, separated by "white space" and having the fol- lowing format: partition tag flag starting_sector size_in_sectors where the entries have the following values: partition The partition number. Currently, for Solaris SPARC, a disk can have up to 8 partitions, 0-7. Even though the partition field has 4 bits, only 3 bits are currently used. For , all 4 bits are used to allow slices 0-15. Each Solaris fdisk partition can have up to 16 slices. tag The partition tag: a decimal number. The following are reserved codes: 0 (V_UNASSIGNED), 1 (V_BOOT), 2 (V_ROOT), 3 (V_SWAP), 4 (V_USR), 5 (V_BACKUP), 6 (V_STAND), 7 (V_VAR), and 8 (V_HOME). flag The flag allows a partition to be flagged as unmountable or read only, the masks being: V_UNMNT 0x01, and V_RONLY 0x10. For mountable partitions use 0x00. starting_sector The sector number (decimal) on which the partition starts. size_in_sectors The number (decimal) of sectors occupied by the partition. You can save the output of a prtvtoc command to a file, edit the file, and use it as the datafile argument to the -s option. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ uname(1), format(1M), prtvtoc(1M), attributes(5) Only fdisk(1M), installgrub(1M) Special care should be exercised when overwriting an existing VTOC, as incorrect entries could result in current data being inaccessible. As a precaution, save the old VTOC. For disks under one terabyte, fmthard cannot write a VTOC on an unlabeled disk. Use format(1M) for this purpose. 11 Apr 2005 fmthard(1M)

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