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

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Files that start with ' ~$ ' and end with .doc / .docx are appearing on my desktop. How can I remove them?

I was going through my desktop in Linux and I noticed a list of files that were not on my desktop. They are Microsoft word(.doc & .docx) files that exist on my computer elsewhere. For some reason ...
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SSH between N number of servers

I have n number of servers like c0001.test.cloud.com, c0002.test.cloud.com, c0003.test.cloud.com and I want to do the ssh between these servers like: from Server: c0001 do the ssh to c0002 and then ...
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SSH Between N number of Servers using script [duplicate]

I have n number of servers like c0001, c0002, c0003 and I want to do the ssh between these servers like: from server c0001 do the ssh to c0002 and then exit the server. Come back to c0001 do the ssh ...
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Unable to locate package shred. Meaning, apt-get can't find it and neither can I using Google

I have come to depend on this unix utility to wipe SSD drives dependably and quickly in preparation for re-imaging. I am curious as to why it is gone. But the purpose of this question is to either: ...
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cannot find the file created under cygwin using the search from microsoft windows 7

I am a Windows 7 user and have a large text file (>3 GB) to process and extract information. I chose to run cygwin under Windows 7 to split the file as I do not know how to do it using DOS command ...
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see Unix userids in macOS

I have a million-file 900-userid snapshot of an old Unix file server. On Linux I can browse it and have ls -l show usernames from the snapshot's /etc/passwd, by just chroot'ing to the snapshot's top ...
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Fastest way to compress (i.e. archive into a single file) millions of small files on a powerful cluster to speed up transfer of files

IMPORTANT NOTE: Compression is NOT the goal, archiving/taping (packing all of the files into a single archive) is the goal. I want to backup a single directory, which contains hundreds of sub-...
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Unix/Linux - service unit file cannot recognize env variable set in /etc/environment

I have an environment variable setup correctly in /etc/environment I have ensured that it loads correctly via /etc/profile modification. and I can echo it to confirm. but when I created the unit ...
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Concatenate and loop MP3 files

I want to concatenate and loop 3 MP3 files. grammaraudio1.mp3 grammaraudio2.mp3 grammarsudio3.mp3 The output file must loop the first MP3 file five times, then the second one 5 times, etc. Can I ...
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How to detect a USB drive in Lynx OS?

In Linux, when I insert a USB stick, the USB shows up in /dev, usually as /dev/sdb or something similar. Right now I am trying to backup a computer running Lynx OS, when I insert a USB stick, nothing ...
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How do I determine what is the best block size for a 960 PRO M.2?

I have a Samsung NVMe SSD 960 PRO M.2. I was in the process of installing Gentoo on it. gparted notified me that the physical block size, is different than what the kernel reports. I thought the ...
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Unlimited recursive while displaying time for every directory

I want to display all directories in my current directory recursively, but I also want to display the full date and time (even after 6 months). Considering I am using a Mac I had to use the FreeBSD ...
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Multiple expressions in the command-line utility `rename`

I am learning how to use the command-line Unix utility rename (see, for example, https://www.tecmint.com/rename-multiple-files-in-linux/). The manual for rename says that you can combine multiple ...
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Unexpected behavior with -h flag passed to du

As long as I've been living in *nix world I've lived under the assumption that when a command accepted a -h flag the only thing I was changing was effectively formatting of a print statement. I don't ...
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Filename generation from variable in zsh without spawning subshell

In zsh I have a glob pattern in a variable, and I want to define another variable that performs filename generation on that pattern. Is there a way to do this without spawning a subshell? The ...

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