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Questions tagged [unix]

Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs.

Excerpt from the Wikipedia page

Unix was originally written in assembly but has since been rewritten in C. It has been branched many times both commercially and open source. One popular variant is the BSD variant which originated from the University of California, Berkeley. It also gave rise to Linux.

Notable variants

  • Silicon Graphics - Irix
  • IBM - AIX
  • Sun Microsystems - Solaris
  • Hewlett Packard - HP-UX

Unix is officially trademarked as UNIX.

Unix on Wikipedia

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MYSQL Start unit not found

Im using AWS Linux 2 AMI Currently I have AWS EC2 Recently the mysql doesn't work anymore but it worked before. when I tried to do this sudo service mysql start or sudo service mysqld start It says service mysql unit not found I tried also to sudo…
Pablo
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Copy binary file from other system with builtin shell commands only

I accidentally just have removed critical shared library and no one dynamically linked executable can't be run now. For example, even /bin/ls shows error while loading shared libraries: libunwind.so.8: cannot open shared object file: No such file…
Kirill Frolov
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SSH not redirecting stdout to local terminal

I have the following relevant lines in a csh script: #!/bin/csh -xv set dvar = `date +"^%m\/%d\/%y"` set filedate = `date +%b%d%Y` set grepstring = "grep "\"$dvar\""
Lance Roberts
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vsftpd: ftp: setsockopt (ignored): Permission denied

I'm trying to upload things to my server however I'm unable to ls inside a directory or upload a file to it. I'm using CentOS 8, SELinux set on permisssive. The directory I want to operate on has 777 permissions set. The user I'm using is not listed…
user540468
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unable to start libvirtd daemon as root user and normal user

I am trying to start libvirtd daemon with following command. systemctl enable --now libvirtd As normal user, I am asked for authentication to manage system service or unit files. So, I tried after sudo to root user. But I get the following…
Mano
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A process (Nginx) run on port 80 but I can't find where the command is

I am on Mac OS 10.14.5. I want to use the port 80 for doing Docker work. But on my Mac, the port 80 is already used, and surprisingly for me, it's not Apache but Nginx (at least, the page displays Nginx information). I don't remember to have…
pom421
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Not able to start tomcat 7.0 on my server

I am not able to start my tomcat (7.0) on my server. While starting it is giving below error message. FAIL,Resource start failed [Context: Failure Reason=PID not found;Code=SCLD-LRM-4022; I don't know why it is searching PID before . My…
Anshu
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High load average with low activity

This is a mail server which is running Apache2 and Postfix as services. It's been up for 135 days and nothing has been changed to the services since then. The usual load average was about 0.xx but it spiked up to around 1.00 consistently a week ago.…
Weng Hui
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Why can't I uninstall mysql completely? look! it's still there

root@db2:/var/log/mysql# aptitude remove mysql-server --purge Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done No packages will be…
Alex
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Should the Tomcat standalone http server be stopped after you've setup the apache http server?

I'm going to set up my linux server (ubuntu) with Apache and Tomcat. I've seen the documentation about setting up the tomcat connector for apache, but the thing I don't understand is that shouldn't you stop the tomcat standalone http server that's…
Marplesoft
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Troubleshooting httpd in Linux

I have a small personal site hosted on Unix (using a common hosting account). My experience with Unix is limited (too bad). Recently I set up a httpd server running on port 8082 (not Apache - but an Apache server is already running on port 80 by…
sevaxx
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Detect and clean nymaim on Ubuntu server?

I'm trying to figure out why our server has been block at Spamhaus. It comes up with: 139.162.208.xxx is listed in the XBL, because it appears in: CBL Lookup Following the link, it says: This IP address is infected with, or is NATting for a…
Andrew Newby
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Using iptables to limit httpd, ssh and icmp

I want to block ICMP and limit SSH and HTTPD traffic to eth0 My original iptables looks like this filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A…
Wood Chipper
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Does redhat system admin and engineering certificate (RHCSA) and (RHCE) work for all Unix-like operating systems?

Does redhat system admin and engineering certificate (RHCSA) and (RHCE) work for all Unix-like operating systems? or Can a Redhat Engineer or System admin work for a debian based companies or systems?
Cracker
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Bash command to execute a foreground set of background commands

I got 2 commands that run blocking the input in the console, so they must be ended with CTRL+C. I don't like running them in background, since I lost control for interruption. But otherwise I cannot execute them sequentially in a one-liner since…
Whimusical
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