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Operating Systems AIX Command to find file system details on AIX Post 302957813 by bakunin on Thursday 15th of October 2015 08:52:04 AM
Old 10-15-2015
Quote:
Originally Posted by Maddy123
Could you please explain above line with few examples as I feel difficult to understand it correctly.
When you use du -sm or du -sk or du -sg you will get all numbers in the same unit: kilobytes, megabytes, gigabytes or whatever. You can sort this output numerically and get valid results (that is, the files sorted by their size).

When you use the GNUism du -sh instead it will display the numbers in differing units and because "50M" (megabytes) is bigger than "500k" (kilobytes) but numerically smaller ("50" is smaller than "500" and sort doesn't know about units) you will get invalid results.

So, if you plan to use sort on your results you should stick to the AIX-variant of du anyways and not even think about using the GNU-variant du -h.

I hope this helps.

bakunin
 

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newfs_vxfs(1M)															    newfs_vxfs(1M)

NAME
newfs_vxfs: newfs - create a new VxFS file system SYNOPSIS
disk_type] swap] [mkfs_vxfs_options] special DESCRIPTION
builds a VxFS file system by invoking special specifies a character (or raw) file (for example, or Options recognizes the following options: Reserve space for boot programs past the end of the file system. If the file is present on the system, sufficient space to accommodate that file is reserved; otherwise 691 kilobytes are reserved. This option decreases the size of the file system being created. This option cannot be used if the file-system size is also specified using (see options below). Specify the file-system type Use disk parameters from the disk_type named in This option is provided for backward compatibility with previous HP-UX releases. Any parameters specified on the command line will the corresponding values in Any values not specified in the command line and not shown in are defaulted. Reserve swap megabytes of swap space past the end of the file system. This option decreases the size of the file system to be created by the specified number of megabytes. cannot be used if the file-system size is also specified using (see options below). Specify verbose mode. prints out its actions, including the parameters passed to Echo the completed command line, but do not execute the command. If not valid, prints an error message. The command line is generated by incorporating the user-specified options and other information derived from This option allows the user to verify the command line. NOTE: You can specify the and options in the same command line. In that case, both the requested swap space and the space needed for boot programs are reserved. These options are used when the file system size is defaulted to the size of the entire disk. mkfs_vxfs Options The following additional command-line options can be used to override default parameters passed to File system block size in bytes. The default value is 1024 bytes for systems smaller than two terabytes. For Version 5 disk layout file systems larger than two terabytes, the maximum file system size is dependent on the block size. A four terabyte file system requires a 1K block size, An eight terabyte file system requires a 2K block size, a 16 TB file system requires a 4K block size, and a 32 TB file system requires an 8K block size. Valid only for the Version 4 and 5 disk layouts. This option controls the largefiles flag for the file system. If is specified, the bit is set and files two giga- bytes or larger can be created. If is specified, the bit is cleared and files created on the files system are lim- ited to less than two gigabytes. The default is See mkfs_vxfs(1M), mount_vxfs(1M), and fsadm_vxfs(1M). File system size in blocks (defined in The default value is the size of the entire disk or disk section, minus any swap or boot space requested. The size specifies the number of sectors in the file system. By default, size is specified in units of sectors. However, you can append a suffix to size to indicate another unit of measure. Append or to indicate that the value is in kilobytes, or to indicate megabytes, or or to indicate gigabytes. Operands recognizes the following operand: special A character (raw) file. EXAMPLES
To create a VxFS file system on or and reserve 40 megabytes of swap space. FILES
Disk description file. Static information about the file systems. SEE ALSO
fsadm_vxfs(1M), mkfs(1M), mkfs_vxfs(1M), mount_vxfs(1M), newfs(1M), disktab(4). newfs_vxfs(1M)
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