By Dave Taylor
The UNIX shell is the most scripting atmosphere of each Linux, Mac OS X and UNIX procedure, even if a rescued computer or a million-dollar mainframe. This cookbook of helpful, customizable, and enjoyable scripts promises the instruments to unravel universal Linux, Mac OS X and UNIX difficulties and customize your computing setting. one of the greater than a hundred scripts incorporated are an interactive calculator, a spell checker, a disk backup software, a climate tracker, and an internet logfile research software. The publication additionally teaches you the way to jot down your personal subtle shell scripts through explaining the syntax and strategies used to construct each one instance scripts. Examples are written in Bourne Shell (sh) syntax.
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Additional resources for Wicked Cool Shell Scripts - 101 Scripts For Linux, Mac OS X, And Unix Systems
Sizes are reported in blocks. • Information that was stored in the alternate cylinders area, the last two cylinders of the disk, is now stored in slice 8. • If you use the format utility to change partition sizes, the unassigned partition tag is assigned to partitions with sizes equal to zero. By default, the format utility assigns the usr partition tag to any partition with a size greater than zero. You can use the partition change menu to reassign partition tags after the partitions are changed.
Use the dmesg command, described later in this section, to obtain information about devices connected to your system. notice] sd20 is\ /pci@1f,0/pci@1/scsi@1,1/sd@4,0 This same information is also available in the /var/adm/messages file. notice] sd20 /pci@1f,0/pci@1/scsi@1,1/sd@4,0 34 glm1: target 3 lun 0 is\ glm1: target 4 lun 0 is\ Part I: Exam Preparation Part I: Exam Preparation 35 As you can see, the physical device name and the full device name are the same. The difference is that the full device pathname is simply a path to a particular device.
Some virtual file systems, such as the temporary file system, might use the swap space on a physical disk. The following is a list of some of the more common types of virtual file systems: • SWAPFS (Swap File System) A file system used by the kernel for swapping. Swap space is used as a virtual memory storage area when the system does not have enough physical memory to handle current processes. • PROCFS (Process File System) The Process File System resides in memory. It contains a list of active processes, by process number, in the /proc directory.