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What is the use of crontab command in Linux Operating system?
Crontab is a very useful command used for scheduling purpose. If a person working inn Linux operating system wishes to schedule to run later they can achieve this by using the crontab command. Thus it is possible that each user working in the Linux operating system can define their own crontab. There are many options available with this crontab command. Some of them are namely:
Crontab with... -
How many prompts are available in a UNIX system?
Two prompts, PS1 (Primary Prompt), PS2 (Secondary Prompt).
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UNIX Maximum simultaneous logins
how many simultaneous logins are allowed in Linux/Solaris for a single user ?
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Inter process command
inter process command in UNIX be achieved by a)pipes b)messages c)semaphores d)shared memory e)all
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What does command "kill -9" does ?
(Forces a process to be killed. ) But what actually happens behind the scene?
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Write a command to display a file�s contents in various formats?
$od -cbd file_namec - character, b - binary (octal), d-decimal, od=Octal Dump.
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How to save a path in command prompt to recall it later.
How can I save a path to my favorites in command prompt to recall it later?
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What does the command “ $who | sort ‚logfile > newfile‚do?
The input from a pipe can be combined with the input from a file . The trick is to use the special symbol �-� (a hyphen) for those commands that recognize the hyphen as std input.In the above command the output from who becomes the std input to sort , meanwhile sort opens the file logfile, the contents of this file is sorted together with the output of who (rep by the hyphen) and the sorted output...
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Unix & Aix
Unix & Aix what's the difference between the two.
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Is it possible to restrict incoming message?
Yes, using the �mesg� command.
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What is the use of the command "ls -x chapter[1-5]"?
Ls stands for list; so it displays the list of the files that starts with 'chapter' with suffix '1' to '5', chapter1, chapter2, and so on.
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UNIX questions
How do u configure the Disk?Tell me Steps to configure the VG?How do u add a new disk in VG?What are the Attributes of LVM?Describe about LVM Adva/Dis.Adv?How do u find the fix is installed?How to u extend the FS?Attributes of FS?List all the LV in system?How do u find the PP size of the VG?How do u create the pp size of 32 MB in VG?What is the Limitation of VG?How do u disable the paging space?What...
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UNIX Interview Questions
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