1. Because the PATH variable defines the directories your shell looks in for commands you type that aren't built into the shell. For instance if you type ls, and ls isn't an internal shell command, it looks through the directories in PATH for an executable file with the same name as the command you typed and tries to execure it. /bin and /usr/bin are used to store commonly used executable files such as ls, grep, chmod, etc.
2. Because the `` quotes are command substitution quotes. the shell will execute the command between them and then substitute is ouput in place of `command` as if you had typed it. `date` tries to run a command named whatever date outputs on your system.
3. Its easiest to use three seperate commands. If it takes longer to figure out how to do something in one command than it takes to type 3 and computing resources aren't an issue because you are only going to do it once or you have a tiny amount of data, why waste your time trying to figure out how to make a complex command work?
4. ${d-*} means if d is unset then assign * to d. see the parameter expansion section of the ksh, sh, or bash man page for more info.
5. yes
why are you doing his homework in full ?
This User Gave Thanks to ghostdog74 For This Post:
1. You have a very large file, named 'ColMe', tab-delimited, you are asked to process. You are told that each line in 'ColMe' has 7 columns, and that the values in the 5th column are integers. Using shell functions (and standard LINUX/UNIX filters), indicate how you would verify that these... (1 Reply)
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1. The problem statement, all variables and given/known data:
Hello,
My name is Jordan and studying at the New Bulgarian University in Sofiya. This is my homework but can... (2 Replies)
1. Write a shell script to print the file names of all files having .txt extension of a given directory after converting to uppercase letters. The input (directory name) should be given as command line argument. The script will also check whether sufficient arguments are passed or not and whether... (1 Reply)
A shell script is a script written for the shell, or command line interpreter, of an operating system. Typical operations performed by shell scripts include file manipulation, program execution, printing text etc.
Shell : In computing, a shell is a piece of software that provides an interface for... (1 Reply)
plz i need code to search about numbers like this :
962785785698
962795565488
962785321565
962777321684
962795979515
i need code to detect just numbers start with "96278"
i need it in awk !!
thanks (1 Reply)
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Write a command to display lines ending with the... (1 Reply)
Discussion started by: elh009
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LEARN ABOUT ULTRIX
lmfsetup
lmfsetup(8) System Manager's Manual lmfsetup(8)Name
lmfsetup - License Management Facility PAK registration script
Syntax
/etc/lmfsetup [ template ]
Description
The script allows you to register data supplied by a Product Authorization Key (PAK). The script prompts you for the data associated with
each of the fields on a PAK. When all the data has been entered, the License Management Facility (LMF) ensures there are entries against
all the mandatory fields, and that the Checksum validates all the license data. If the data has been entered correctly, the PAK is regis-
tered in the License Database. If the data has been entered incorrectly, the appropriate error message is displayed and you are given the
opportunity to re-enter the data.
The template option allows you to register license data from templates in A template containing a partially complete PAK is created by some
products as part of their installation process. The script only prompts you for data on the fields that are empty in the template. If the
script cannot find the specified template in it searches the current directory.
The script is provided as an alternative to the command. This displays a template, which includes the fields on the PAK, and invokes an
editor so that you can add the license data to the appropriate field. The command also allows errors to be corrected without having to re-
enter all the data.
See Alsolmf(8)
Guide to Software Licensing
lmfsetup(8)