- ILUG-D - lists.fsci.in

1D1C - set
by Dhanasekar 05 Feb '23

05 Feb '23

set - is a built-in Linux shell command that displays and sets the names and values of shell and Linux environment variables syntax $ set [options] [arguments] To list all settings $ set $ set debian redhat arch To list all the parameters in the order of $1 $2 $3 $ echo "$*" $ echo $1 $ echo $2 $ echo $3 To unset All Positional Parameters $ set -- To print out an error on the shell if the script runs into an undefined variable $ vim example1.sh #!/bin/bash set -u echo $foo echo "welcome to ilugc" :x $ bash example.sh To display an Error If a Command Is Non-existent $ vim example2.sh #!/bin/bash set -e foo bar echo "welcome to klug" :x $ bash example2.sh To Display an Error in Piped Commands $ vim example3.sh #!/bin/bash set -eo pipefail foobar | echo "Hi welcome to chennaipy" echo "welcome to ilugc" :x $ bash example3.sh To set allexport and notify options $ set -o allexport -o notify regards, T.Dhanasekar

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1D1C - service
by Dhanasekar 04 Feb '23

04 Feb '23

service - is used to control SysVinit services through SysVinit scripts syntax $ service [options] [service] [subcommand] To check the status of service $ sudo service rsyslog status $ sudo service sshd status To stop a service $ sudo service rsyslog stop $ sudo service sshd stop To restart a service $ sudo service rsyslog restart $ sudo service sshd restart $ sudo service vsftpd restart To list the status for all the programs $ sudo service --status-all To do a full restart $ sudo service service_name --full-restart regards, T.Dhanasekar

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1D1C - seq
by Dhanasekar 03 Feb '23

03 Feb '23

seq - print a sequence of numbers syntax $ seq [option] FIRST INCREMENT LAST To display Seq LAST , default increment is 1 $ seq 20 To print with Seq FIRST and LAST $ seq 5 20 To print Seq FIRST INCREMENT LAST $ seq 4 2 50 To add the strings before the sequence number $ seq -f NUM%02g 10 To print the formatted strings starting from 5 and incrementing by 5 up to 25 $ seq -f NUM%02g 5 5 25 To display the output on the same line $ seq -s " " 5 5 50 To append the leading zeros to equalize the width $ seq -ws " " 3 2 120 To display with separators $ seq -s - 100 To generate a sequence containing the floating values $ seq -f "%f" 2 0.5 10 regards, T.Dhanasekar

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Call for Proposal for Mini-Debian conference - 2023
by VGLUG 03 Jan '23

03 Jan '23

Dear FOSS activist, MiniDebConf Tamil Nadu 2023 will be held in Viluppuram, Tamil Nadu hosted by VGLUG Foundation (https://vglug.org) . It is a smaller version of the Debian Conference which focuses on Debian, FOSS by conducting talks and workshops on various topics. We cordially invite Debian contributors, FOSS activists, and working professionals to present a talk on behalf of the conference on the following topics or your area of interest: - Debian and FOSS related topics - Artificial Intelligence, Machine Learning, NLP, Deep Learning, Open Source AI - Robotics, Open Hardware, IoT - Cloud & DevOps, Micro-services, Kubernetes, Distributed Services, Digital Sovereignty. - Blockchain - Web and Mobile Technologies We believe that your experience with FOSS will benefit other groups of FOSS activists, hence we would like to invite you/your organisation to present a talk, demo, and workshop. *Call for proposal:* *Start Date :* 25 December, 2022 *End Date :* 10 January, 2023 *For more details* - https://tn23.mini.debconf.org/contribute/cfp/ *Wiki page* - https://wiki.debian.org/DebianIndia/MiniDebConfTamilNadu2023/ *Poster link:* https://villupuramglug.files.wordpress.com/2022/12/mdc-tn23-cfp.png *Conference Date: * 28 – 29 January, 2023 *Venue: * University College of Engineering, Viluppuram, Tamil Nadu, India Regards, MiniDebConf Tamil Nadu Team.

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Small business server on Linux
by abhishek jain 03 Jul '22

03 Jul '22

Friends Need some help, posting after a long time I am looking to setup a server in my office so that I can use it for active directory for my company, is Linux a good choice and what would be the os and steps for it If some one can recommend a company to help that would be great or if you can send steps. Looking forward to hearing from you Thanks Abhishek

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Announcing Prav-- free software cooperative society
by Ravi Dwivedi 19 Mar '22

19 Mar '22

PravApp project is a plan to get a lot of people to invest small amounts to run an interoperable messaging service that is easier to join and discover contacts. It will be based on Free Software Quicksy app which gives a similar experience to WhatsApp, Telegram, Signal without locking users to its service by interoperability with any xmpp service provider. We want to offer this service under a multi state cooperative society in India. Would you join the cooperative? Learn more at https://prav.app -- Ravi Dwivedi Personal website https://ravidwivedi.in/ Member of Prav app project https://prav.app/ Privacy Yathra Campaigner https://privacyyathra.in Please donate to privacy services https://fsci.in/blog/fsci-crowdfunding-2022/

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Announcing LibreOffice India Community
by Ravi Dwivedi 19 Mar '22

19 Mar '22

Hi everyone, Today we’re announcing communication channels for the Indian LibreOffice community - to help spread the word about LibreOffice, and build up the community in the country: https://blog.documentfoundation.org/blog/2022/03/19/join-the-indian-libreof… Thanks. -- Ravi Dwivedi Personal website https://ravidwivedi.in/ Member of Prav app project https://prav.app/ Privacy Yathra Campaigner https://privacyyathra.in Please donate to privacy services https://fsci.in/blog/fsci-crowdfunding-2022/

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On the design of text editors, a paper by Nicolas P. Rougier
by rajudev 13 Mar '22

13 Mar '22

https://arxiv.org/pdf/2008.06030.pdf

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Fwd: GNUnet 0.16.0 released
by rajudev 03 Mar '22

03 Mar '22

-------- Forwarded Message -------- We are pleased to announce the release of GNUnet 0.16.0. This is a new major release. It breaks protocol compatibility with the 0.15.x versions. Please be aware that Git master is thus henceforth (and has been for a while) INCOMPATIBLE with the 0.15.x GNUnet network, and interactions between old and new peers will result in issues. 0.15.x peers will be able to communicate with Git master or 0.16.x peers, but some services - in particular GNS - will not be compatible. In terms of usability, users should be aware that there are still a number of known open issues in particular with respect to ease of use, but also some critical privacy issues especially for mobile users. Also, the nascent network is tiny and thus unlikely to provide good anonymity or extensive amounts of interesting information. As a result, the 0.16.0 release is still only suitable for early adopters with some reasonable pain tolerance. Download links: http://ftpmirror.gnu.org/gnunet/gnunet-0.16.0.tar.gz http://ftpmirror.gnu.org/gnunet/gnunet-0.16.0.tar.gz.sig http://ftpmirror.gnu.org/gnunet/gnunet-gtk-0.16.0.tar.gz http://ftpmirror.gnu.org/gnunet/gnunet-gtk-0.16.0.tar.gz.sig http://ftpmirror.gnu.org/gnunet/gnunet-fuse-0.16.0.tar.gz http://ftpmirror.gnu.org/gnunet/gnunet-fuse-0.16.0.tar.gz.sig The GPG key used to sign is: 3D11063C10F98D14BD24D1470B0998EF86F59B6A Note that due to mirror synchronization, not all links may be functional early after the release. For direct access try http://ftp.gnu.org/gnu/gnunet/ Noteworthy changes in 0.16.0 (since 0.15.3): GNS: - New record flag: CRITICAL. For records that must be processed otherwise resolution must fail. #7169 - Deletion of records and reduction of expiration times is now properly handled with respect to monotonically increasing expiratin times. #7170 - VPN tunnel establishment is moved out of the GNS resolver to be handled by applications (such as the DNS2GNS service). #7171 - Introduces new record type REDIRECT which replaces the previous (ab)use of CNAME records. #7172 - The specification has been updated to reflect the changes. https://lsd.gnunet.org/lsd0001 DHT: - Routes can now be signed. #4164 - Changed distance metric to a more traditional XOR. #7136 - The specification has been updated to reflect the changes. https://lsd.gnunet.org/lsd0004 RECLAIM: Added some preliminary support for Decentralized Identifier (DID) and Verifiable Credentials (VCs). UTIL: Add Clause-Schnorr blind signatures. For use in Taler (https://taler.net/en/news/2022-02.html). BUILD: Building from git now requires recutils. The bootstrap will generate up-to-date header files from https://gana.gnunet.org/. A detailed list of changes can be found in the ChangeLog and the 0.16.0 bugtracker at https://bugs.gnunet.org/changelog_page.php?project_id=13. Thanks: This release was the work of many people. The following people contributed code and were thus easily identified: Christian Grothoff, Tristan Schwieren, Alessio Vanni, Florian Dold, Thien-Thi Nguyen, t3sserakt, Lucien Heuzeveldt, Gian Demarmels, madmurphy, TheJackiMonster and Martin Schanzenbach.

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Fwd: GNU Guile 3.0.8 released
by rajudev 14 Feb '22

14 Feb '22

[A resend, as original mail accidentally had two From headers; apologies for any duplicates!] We are delighted to announce GNU Guile release 3.0.8, the latest in the 3.0 stable release series. The Guile 3.0.8 release mixes maintenance and optimizations that were landed since the previous 3.0.7 stable release in May 2021. See the NEWS extract at the end of the mail for full details. Compared to the previous stable series (2.2.x), Guile 3.0 adds support for just-in-time native code generation, speeding up all Guile programs. The Guile web page is located at http://gnu.org/software/guile/, and among other things, it contains a copy of the Guile manual and pointers to more resources. Guile is an implementation of the Scheme programming language, packaged for use in a wide variety of environments. In addition to implementing the R5RS, R6RS, and R7RS Scheme standards, Guile includes full access to POSIX system calls, networking support, multiple threads, dynamic linking, a foreign function call interface, powerful string processing, and HTTP client and server implementations. Guile can run interactively, as a script interpreter, and as a Scheme compiler to VM bytecode. It is also packaged as a library so that applications can easily incorporate a complete Scheme interpreter/VM. An application can use Guile as an extension language, a clean and powerful configuration language, or as multi-purpose "glue" to connect primitives provided by the application. It is easy to call Scheme code from C code and vice versa. Applications can add new functions, data types, control structures, and even syntax to Guile, to create a domain-specific language tailored to the task at hand. Guile 3.0.8 can be installed in parallel with Guile 2.2.x; see http://www.gnu.org/software/guile/manual/html_node/Parallel-Installations.h…. A more detailed NEWS summary follows these details on how to get the Guile sources. Here are the compressed sources: http://ftp.gnu.org/gnu/guile/guile-3.0.8.tar.lz (6MB) http://ftp.gnu.org/gnu/guile/guile-3.0.8.tar.xz (6MB) http://ftp.gnu.org/gnu/guile/guile-3.0.8.tar.gz (10MB) Here are the GPG detached signatures[*]: http://ftp.gnu.org/gnu/guile/guile-3.0.8.tar.lz.sig http://ftp.gnu.org/gnu/guile/guile-3.0.8.tar.xz.sig http://ftp.gnu.org/gnu/guile/guile-3.0.8.tar.gz.sig Use a mirror for higher download bandwidth: http://www.gnu.org/order/ftp.html Here are the SHA256 checksums: 96f5263f89dda2d757fe1129e489e672f5a0b7540ee6710ec7ef352120d8af52 guile-3.0.8.tar.lz daa7060a56f2804e9b74c8d7e7fe8beed12b43aab2789a38585183fcc17b8a13 guile-3.0.8.tar.xz f25ae0c26e911af1b5005292d4f56621879f74d6958b30741cf67d8b6feb2016 guile-3.0.8.tar.gz [*] Use a .sig file to verify that the corresponding file (without the .sig suffix) is intact. First, be sure to download both the .sig file and the corresponding tarball. Then, run a command like this: gpg --verify guile-3.0.8.tar.gz.sig If that command fails because you don't have the required public key, then run this command to import it: gpg --keyserver keys.gnupg.net --recv-keys 4FD4D288D445934E0A14F9A5A8803732E4436885 and rerun the 'gpg --verify' command. This release was bootstrapped with the following tools: Autoconf 2.71 Automake 1.16.2 Libtool 2.4.6 Gnulib v0.1-4855-g8f4538a53d Makeinfo 6.7 An extract from NEWS follows. Changes in 3.0.8 (since 3.0.7): * Notable changes ** Cross-module inlining Although historically Guile has treated modules as glorified hash tables, most modules are actually _declarative_ -- they just define functions and variables and provide them for other modules to use, and don't manipulate modules as first-class objects. See "Declarative Modules" in the manual, for more discussion. Since version 3.0.0, Guile has taken advantage of declarative semantics to allow a top-level definition to be inlined within its uses in the same compilation unit, provided the binding is never assigned and defined exactly once. Guile 3.0.8 extends this to allow some exported declarative definitions to be inlined into other modules. This facility is mostly transparent to the user and is enabled at the default -O2 optimization level. "Small" definitions are available for cross-module inlining (-Oinlinable-exports, included at -O2). The actual inlining decision is performed by Guile's partial evaluation pass (the -Ocross-module-inlining modifier to -Opeval, included at -O2 also), subject to effort and size growth counters. Note however that as with macros, when a definition changes in module A, a separately compiled module B that uses that definition doesn't automatically get recompiled. This is a limitation in Guile that we would like to fix. As another limitation, cross-module inlining is only available for imports from modules which have already been compiled at -O2 (or otherwise with -Oinlinable-exports). When determining whether to enable this facility by default, we weighed the usability problems of stale inlined bindings against the benefit of allowing module boundaries to no longer be optimization boundaries, we ended up on the "let's do it!" side of the equation. However we welcome feedback from users as to what should be the default behavior, until such a time as we have a proper notion of when a compiled file is stale or not. ** Avoid the need for a custom GMP allocator In Guile 3.0.6, we fixed a longstanding bug in Guile's use of the library that Guile uses to implement bignums (large integers), GMP (https://gmplib.org). See the Guile 3.0.6 release notes. However this left us with a suboptimal Guile, in which each large integer had to have a finalizer to free the memory allocated by GMP. Finalizers take time and space, and so they limit allocation rate, causing bignum performance to drop. Though you could set an environment variable to go back to the older, faster behavior, it wasn't the default. In Guile 3.0.8 we fix this problem comprehensively by avoiding embedding GMP's mpz_t values in Guile bignums. Instead we embed the bignum digits directly, avoiding the need for finalizers or custom allocators. This removes the need for the GUILE_INSTALL_GMP_MEMORY_FUNCTIONS environment variable mentioned in the Guile 3.0.6 release notes. We also deprecate the scm_install_gmp_memory_functions variable. * New interfaces and functionality ** Typed vector copy functions in (srfi srfi-4 gnu) The functions `u8vector-copy' `s8vector-copy' `u16vector-copy' `s16vector-copy' `u32vector-copy' `s32vector-copy' `u64vector-copy' `s64vector-copy' `f32vector-copy' `f64vector-copy' `c32vector-copy' `c64vector-copy' `u8vector-copy!' `s8vector-copy!' `u16vector-copy!' `s16vector-copy!' `u32vector-copy!' `s32vector-copy!' `u64vector-copy!' `s64vector-copy!' `f32vector-copy!' `f64vector-copy!' `c32vector-copy!' `c64vector-copy!' have been added. See SRFI-4 - Guile extensions" in the manual. ** New function srfi-4-vector-type-size in (srfi srfi-4 gnu) See SRFI-4 - Guile extensions" in the manual. ** `bytevector-fill!' supports partial fill through optional arguments This is an extension to the r6rs procedure. See "Manipulating Bytevectors" in the manual. ** `vector-copy!' and `vector-copy' from (rnrs base) included in core Compared to the previous versions, these accept range arguments. See "Accessing and Modifying Vector Contents" in the manual. ** New function bitvector-copy See "Bit vectors" in the manual. ** (system foreign) supports C99 complex types The types `complex-float' and `complex-double' stand for C99 `float _Complex' and `double _Complex` respectively. * Other new optimizations ** Better optimization of "let" in right-hand-side of "letrec" ** Allow constant-folding for calls to "expt" Thanks to Maxime Devos. ** Add ,optimize-cps REPL meta-command This meta-command is like ,optimize, but at a lower level. ** Improve alias analysis in common subexpression elimination ** Avoid argument-count checks for well-typed calls to known procedures This speeds up calls to lexically bound procedures. ** Avoid return-value-count checks for calls to known-return-arity procedures This new optimization, enabled at -O2, speeds up returns from calls to lexically bound procedures. * Build system changes ** Update Gnulib (bugs.gnu.org/49930) Update gnulib to 8f4538a53d64054ae2fc8b86c0f87c418c6176e6. ** Compile libguile with -flto if available By default, if the compiler supports link-time optimization via the -flto flag, Guile will add it to CFLAGS. This results in a libguile that is approximately 15% smaller. Pass --disable-lto to configure to inhibit this behavior. ** Trim set of prebuilt .go files shipped in the tarball Guile includes built Scheme files in its tarball to speed up the build, for casual builders that are less concerned with reproducibility. However they took a lot of space and we have now trimmed these down to a more minimal set. As always, you can remove them and build entirely from source via a `make -C prebuilt clean`. * New deprecations ** Vector functions require vector arguments Passing arrays that are not vectors (arrays for which `(vector? array)' returns false) to functions `vector-move-left!', `vector-move-right!', `vector->list', and `vector-copy' is deprecated. Use `array-copy!', `array-copy', and `array->list' for such arguments. ** `scm_from_contiguous_typed_array' is deprecated This function was added during the Guile 2.x series and was not documented and is no longer used in Guile itself. ** Deprecate the "simple vector" concept, `scm_is_simple_vector' This concept meant to indicate "vectors which aren't array slices". Use scm_is_vector. ** Deprecate internal contiguous array flag We still reserve space for the flag to preserve ABI but it has no effect. As such we also remove the internal SCM_I_ARRAY_CONTIGUOUS, SCM_SET_ARRAY_CONTIGUOUS_FLAG, SCM_CLR_ARRAY_CONTIGUOUS_FLAG, SCM_I_ARRAY_CONTP preprocessor interfaces, as they were internal and there is no longer a sensible way of using them. ** Deprecate symbol properties Symbols used to have a "function slot" and a "property slot", inherited from Emacs Lisp and early Lisps, which one would access with 'symbol-pref', 'symbol-fref', 'symbol-pset!', and 'symbol-fset!'. These procedures have been discouraged in favor of object properties; they are now deprecated. This saves a few words of memory per symbol. * Bug fixes ** Fix compilation of (ash x N), where N is a literal, at -O1 and below ** Texinfo and XML parsers are now thread-safe (bugs.gnu.org/51264) ** Fix `filename-completion-function' in (ice-9 readline) ** Fix trace-calls-to-procedure (bugs.gnu.org/43102, bugs.gnu.org/48412) ** Fix bug in nftw function (bugs.gnu.org/44182) ** Fix optimization bug in CSE in eq-constant? if both branches same ** Fix readline initialization with invalid keymaps ** Fix crash when reading #nil (bugs.gnu.org/49305) ** Fix read error when reading #{}}#. ** Fix Darwin host detection in foreign-library facility. ** Fix unification of (x ...) patterns in `match' ** Fix scaling floats with leading zeroes in `format' ** Improve support for r7rs-style `(srfi N)' and r6rs-style `(srfi :N) module names (bugs.gnu.org/39601, bugs.gnu.org/40371) ** Add support for the ARC architecture (bugs.gnu.org/48816) ** Build fix for const strerror result (bugs.gnu.org/43987) ** Fix typos in SRFI documentation (bugs.gnu.org/50127) ** Fix bounds check in `recvfrom!' (bugs.gnu.org/45595) ** Add support for riscv32 ** Limit `ash' to left-shift by 2^32 bits (bugs.gnu.org/48150) ** Fix type confusion in heap-numbers-equal? calls from VM Hearty thanks to Jakub Wojciech, Robin Green, Daniel Llorens, Matija Obid, RhodiumToad, Rob Browning, Maxime Devos, Aleix Conchillo Flaqué, Timothy Sample, d4ryus, Fabrice Fontaine, Taylan Kammer, Vineet Gupta, Philipp Klaus Krause, Arun Isaac, and Alex Shinn. -- If you have a working or partly working program that you'd like to offer to the GNU project as a GNU package, see https://www.gnu.org/help/evaluation.html.

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