Unix OS

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Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.

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  1. Linux
  2. Shell Scripting
  3. Oracle Database
  4. Operating Systems
  5. Linux Distributions
  6. Networking
  7. System Programming
  8. Storage
  9. Linux OS Dev
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Hi,

what are the best practices and features, options while using grep.

i am using these days to search in log files, files, directories, content etc

When should i give single quote '  '

1028 views
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Hi,

I keep getting below error when i wrote hello.sh shell script file and try to open it to.



Swap file ".hello.sh.swp" already exists!
[O]pen Read-Only, (E)dit anyway, (R)ecover, (Q)uit, …

1642 views

Hi,

https://bash.cyberciti.biz/guide/Hello,_World!_Tutorial

I created hello.sh script using vi hello.sh
then typed below

echo "Hello, World!"
echo "Knowledge is power."

do i need to …

1236 views

Hi,

I am trying below program

http://www.programmingunit.com/2013/04/19/shell-script-to-check-leap-year/

how to save and execute above shell script and see output and send output to different…

1050 views

Hi,
what are differences between
user defined, environmental. local, global variables

when to use which one. what are advanatages, disadvantages of using each with practical examples.
please …

426 views

Hi,

I like to write a unix shell script to check calendar year, date, current working directory.

how to write and shave .sh file(Say test.sh) and how to execute to see the output.

Any …

438 views

What are differences between
touch cat vi differences

which one is better to use to create a file. When to use which one. please advise

733 views

what is the meaning of below command.
it removed hello
sed -n '/hello/!p' aaaa.txt

why we are giving ! and p there?
please advise

327 views

umask 133;touch dir2

why above command created the directory with 501 permission when i do umask
-rw-r--r-- 1 xxxxxxx 501    0 May  3 16:38 dir2


how to give read write etc all permisson?

515 views

Hi,

When we use below

comm diff cmp unix commands

when i ran comm command why it gave below out put
$ comm aaa.txt aaaa.txt
a
b
c
d
ssssshhhqqq
        this is gp
        writing

217 views
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Hi,

unix how to search all linked and hidden files in current directory.

any good comprehensive link to read all unix command one place.
how to use manual

like

manual help for varios …

522 views

when it displays "Global Group memberships", it it is long, then it is only partially seen. is there a way you break it down to many single line step output?

117 views

Having a bit of a discussion with a software vendor about this. Can anyone confirm my understanding?

/etc/sudoers file example:-

(CODE)

But then the following command fails (logged in on …

218 views

Informix DB wont start up because it says chunk is offline. How do I tell what the device is pointing to?

Heres the ls-al:-

lrwxrwxrwx   1 root     root          29 Feb  6  2013 /dev/DB -> …

2249 views

I'm trying to chroot jail SFTP service on AIX 7.2 system. What I mean is to allow users from 'sftpgrp' group to ONLY SFTP access. Authentication is through SSH KEys (no passwd). Also, no SSH login is …

425 views

Is there a way to run a script in UNIX  that opens 4 extra terminal windows and executes a specific script in each window?

748 views

Hi,

Sorry for the newbie question... I have just installed the docker-engine in my RHEL7 box but Im having issues to install the docker-compose...

[root@-v4 ~]# cd compose
[root@-v4 compose]# …

2213 views

Dear All,

I am looking for a script to add in crontab which can in a particular folder example /application/n1/logs check for a particular extension of files for example *.log and tar the files in …

228 views

I'm trying to do the following Unix equiv in Windows :

*Probe for active domain/website (usually HTTP CODE 200 OK, something even as
  HTTP CODE 301 Redirects)
for url in $(cat list1.txt) ; do …

297 views
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Hi Team,

Iam new to shell scripting , Need an help . I have writen an shell script which will check for the file whether it was modified after it was created. If it is modified , then I need to …

1476 views

current command is not working

HOST cp "$APPLCSF/$APPLOUT/&in_file" "&out_file"
HOST echo "SQL Report from P" | mutt -s "&mail_sub" -a "&out_file" "&mail_id"

247 views

When i log into certain machine with my user name (username1) i don't have access to certain folders etc... however if use a sesu command and i log as another user (lets call it username2) i do have …

7159 views

Sys admin has provided me username and password and advised that solaris uses nis (and then I've been given hostnames).

I've downloaded putty but it gives me authentication failure. Nothing special…

149 views

I had failed disks that had to be replace on my HP 7100 virtual array. Now I need to restore my vendor application only not O/S level files to
HP 7100 virtual array.  In hpux 11.11 to  restore from …

6150 views

I'm looking for working shell script for the following - (AIX Unix)

1).Cron Job runs every hours.
2).All the new files to be gzip with a prefix of current time stamp i.e.
TARA.xml becomes …

585 views
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Unix OS

32K

Solutions

23

Articles & Videos

18K

Contributors

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.

Related Topics

  1. Linux
  2. Shell Scripting
  3. Oracle Database
  4. Operating Systems
  5. Linux Distributions
  6. Networking