HI,

  I am developing a C++ application with libfuse on rhel 6.10. And, also a simple test application also there.

  When I run my test application with same arguments to fuse_main, works fine. But, with actual application, /dev becomes empty (corrupted).  I don't understand why this corrupts machine. I am running these apps with non-root user. added non-root user to fuse group as well as changed permissions to fusermount too.

   In which cases, /dev becomes empty due to any application.

Thanks

Hi everyone,
I am trying to create a Menu script in Unix bash. A few issues that I am experiencing are:
1. Each Menu selection (#1,#2, and #3) ends right after I run each selection and the menu exits out back to the command line. I would like the Menu to ask a user if a user would like to continue with other selections (for example #2 or #3 if #1 was run in the first place) or exit the menu. Right now the Menu just exits after each selection without asking anything.  

2. In part of the selection #1, I would like to capture a value entered for "filecnt" (can be any number but 0) in the $parfl (parameter file). Right now this script allows to enter the value but that this value for some reason is not captured in the $parfl parameter file. The script creates the $parfl file but it is empty.  

What am I missing? Any suggestions or examples would be greatly appreciated. Thank you!

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export DATA=/home/data
export EXEC=/home/exec

export parfl=${DATA}/parameterfile.txt
chmod 777 $parfl

#--------------------------------------------------
# Menu
#--------------------------------------------------

clear
echo "             Control Menu"
echo " "
echo "Selection 1: Run Script1"
echo "Selection 2: Run Script2"
echo "Selection 3: Run Script3 "
echo "Selection 9: Exit System"
echo -e "\n"
echo -e "*** Make a selection from the Menu above and press enter ***"
read select

select=$(echo $select | tr '[:lower:]' '[:upper:]')
if [[ (("$select" <…

Dear Unix Gurus,
I got a new server which the below in the root directories.
Now I need to mount a new directory '/data/inout' here .
IS there a way we can do this.
ls -la

drwxr-xr-x.   2 root    root       6 Dec 14  2017 srv
drwxr-xr-x.   2 root    root       6 Dec 14  2017 mnt
drwxr-xr-x.   2 root    root       6 Dec 14  2017 media
drwxr-xr-x.   3 root    root      18 Sep 27  2018 export
lrwxrwxrwx.   1 root    root       7 Sep 27  2018 bin -> usr/bin
lrwxrwxrwx.   1 root    root       9 Sep 27  2018 lib64 -> usr/lib64
lrwxrwxrwx.   1 root    root       7 Sep 27  2018 lib -> usr/lib
lrwxrwxrwx.   1 root    root       8 Sep 27  2018 sbin -> usr/sbin
drwxr-xr-x.  13 root    root     155 Sep 27  2018 usr
drwxr-xr-x.   2 root    root       6 Sep 27  2018 tmproot
lrwxrwxrwx.   1 root    root      10 Sep 27  2018 esm -> /opt/DBesm
drwxr-xr-x.   4 root    root      33 Sep 27  2018 SSH_Keys
drwxr-xr-x.  11 root    root     128 Sep 27  2018 opt
drwxr-xr-x.  21 root    root    4.0K Oct  8  2018 var
dr-xr-xr-x.   4 root    root    4.0K Oct  8  2018 boot
drwxr-xr-x.   4 root    root      38 Apr 17 07:22 home
drwxr-xr-x. 105 root    root    8.0K Jul  1 02:00 etc
dr-xr-xr-x. 251 root    root       0 Jul  6 21:31 proc
dr-xr-xr-x.  13 root    root       0 Jul  6 21:31 sys
drwxr-xr-x.  19 root    root    3.3K Jul  6 21:31 dev
drwxr-xr-x.   2 root    root       0 Jul  6 21:31 misc
drwxr-xr-x.   2 root    root       0 Jul  6 21:31 net
drwxr-xr-x.  28 root    root    1000 Jul  6 

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…

Adding User to Ubuntu

I need a user that I can use when I do not want to risk doing damage to my Ubuntu installation.

So, I ran

sudo su

then ran

adduser curiouswebster

following these instructions,
https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu-18-04

is ran
usermod -aG sudo curiouswebster

but doesn't this add root privileges for curiouswebster??

If so, please help me downgrade the permissions.

I was hoping to log in as curiouswebster and install various systems, like Apache, MySQL, PHP and WordPress.

Shouldn't I use root for this?

Also, how do I log in as curiouswebster?

Thanks

Which AWS FREE Tier is most advisable (for WordPress)?

I will not choose either of the Windows Server options due to exposure to viruses.

There are 4 LINUX options:

Amazon Linux
Red Hat
SUSE Linux
Ubuntu

(Is Ubuntu an instance of LINUX?)

But I m a .NET developer and may be interested in the following option:
NET Core 2.1 with Amazon Linux 2 - Version 1.0 - ami-0bed74d89326c46bc
.NET Core 2.1 and the PowerShell 6.0 pre-installed to run your .NET Core applications on Amazon Linux 2 with Long Term Support (LTS).

Which platform is safest against hacking and viruses?

Thanks

Dear Gurus,
I have been given root access to a Red Hat linux server 7.5
Now I need to do the below

Onboard a user : george with a home directory /home/george
I used:

adduser -m george

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. It works

Onboard an application Account (System User): java_user
I used:

 adduser -r java_user

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It works

Define  a Home directory to the java_user:  /home/java_datahub
I used:

usermod -d /home/java_datahub java_user

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The above command doesn't do anything. The directories are already existing.

Give sudo access to george  so that he can login to the application account once on the server using the below command

sudo su - java_user

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I am not sure how to do this.

Kindly suggest

Thanks

Hi ,
I have below script which i want to improve to include one more exec run if first one finish good.

spool ICMTR.lst
SET SERVEROUTPUT ON SIZE 1000000;
SET FEEDBACK OFF;
SET LINESIZE 200;
WHENEVER SQLERROR EXIT 1;
var out number;
EXECUTE  test.run_batch_all(1,:out);
spool off

Now i want to add one more only if EXECUTE  test.run_batch_all(1,:out);
finish good then
execute test.pp.all(1,0)

Hi Experts,

What would be the regular expression to denote

XXXXAYYDDD999999

Where XXXX is the bank code. For eg. SBI's bank code is SBIN. All alphabets
A is the system identifier. The possible values are A-Z
YY is two digit year. 10 for 2010. (Possible Dates 01.04.1991 to 31.12.2025)
DDD is julian date. 032 for Feb 1.
999999 is 6 digit sequence number.

Similary

XXXXA9YYYYMMDD00999999

Where XXXX is the bank code. For eg. SBI's bank code is SBIN. All alphabets
A9 is the system identifier. One is digit and one alphabet. Range from A-Z and 0-9
YYYY is four digit year
MM is month. 04 for April
DD is date. 04 for 4th.
(Possible Dates 01.04.1991 to 31.12.2025)
99999999 is 8 digit sequence number.

I need to use the same to found the UTR number from Sentence given in a Excel Cell.

E.g., Sentence is UTM:XSCXQ52019050400148805//UUQP PQDQ XQP/MTGS TO:SXXXX19124112345:SQDHNQ GHOST

I will be using the same in the following function to extract UTR.

Function FindUTR(strin) As Boolean
    FindUTR = UCase(strin) Like "[A-Z][A-Z][A-Z][A-Z][A-Z] [0-9] (0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)[0-9]{2} ########"
End Function

Whether Strin is appropriate here ?

Regards
Kanwaljit

Can you assist with interpreting the output of getafcl for /etc/passwd and /etc/shadow files on a live server. The output shows as below:

# file: etc/shadow
# owner: root
# group: root
user::---
group::---
other::---

/etc/passwd permissions

# file: etc/passwd
# owner: root
# group: root
user::rw-
group::r--
other::r--

fromwhat I understand security best practice suggests /etc/shadow should only be readable by root (as it contains security sensitive info), and /etc/passwd should only be writable by root as you can upgrade permissions to root if you can edit the file. However, the permissions on /etc/passwd indicate 'user' has rw which indicates read & write permissions. Is this a security flaw or is this the default setting? What does 'user' actually represent, and is it all users on the server, if so this seems like a problem from the offset.

When logging in via "dzdo us - [user_name]", the server times out after like 2 minutes! I do heavy work on it sporadically, and it's like 50 times a day I'm logging on, then dzdo, etc.

could I run a small job that would simulate "pwd", so the thing does not time out? And this would run every 30s.

And I'd want to turn it off, if I am going to be doing some "vi" editing, then back on.

I need to run a command in Unix to set up aliases. This is for a "su - " account and when logged in, there's no .profile file that I can set up.

I created "aliases.sh" and tried to run it as ./aliases.sh and it "runs" but the aliases are not created.

How can I quickly set up my aliases upon login to the "su - " account?

Is there any way at all to enable Solaris 10 BSM without rebooting Solaris.
Will issuing "pkill -HUP  BSM_process" enable certain config files to be read
without rebooting?

is there any quick command that can be run via putty once connected to a RHEL server, to determine the privileges granted to that account you are logged in with, e.g. is it a root account, does it have su/sudo privileges etc. I have been given an account to a test server for some security checks, but I am pretty sure a lot of it is not completing as the account has limited privileges. But as it is a fairly new area to me, I could do with a quick command you can run via putty once connected with this account to list what security privileges it actually does have.