https://quicktasks.ismael.casimpan.com/categories/devops/Recent content in devops on IT QuicktasksHugo -- gohugo.ioCopyright © 2018–2022, Ismael Casimpan Jr.; All Rights ReservedTue, 24 May 2022 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/install-rockylinux-qemu/Tue, 24 May 2022 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/install-rockylinux-qemu/ Install qemu from https://www.qemu.org/. Tested working on Windows and not on WSL 1.\qemu-img.exe create -f qcow2 'C:\Users\icasimpan\rockyLinux.hdd' 40G 2.\qemu-system-x86_64.exe -hda C:\Users\icasimpan\rockyLinux.hdd -cdrom C:\Users\icasimpan\Downloads\Rocky-8.6-x86_64-minimal.iso -boot d -m 2G -vga std -net nic,model=virtio -net user -usbdevice tablet Reference: https://computernewb.com/wiki/How_to_install_Ubuntu_16.04_in_QEMUhttps://quicktasks.ismael.casimpan.com/post/json-basics/Tue, 26 Apr 2022 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/json-basics/ JSON or JavaScript Object Notation is a data representation standard shown in a key:value pair, just like a traditional JavaScript object. Here's the key info you need to know about it: All the data in the file must be surrounded by curly braces if you're representing it as an object, and in square brackets if it is an array. Single quotes are not allowed The key in each JSON must be unique and must be in double quotes Numbers must not be enclosed in double-quotes, otherwise they will be treated as strings.https://quicktasks.ismael.casimpan.com/post/git-latest-hash/Sun, 27 Mar 2022 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/git-latest-hash/ Sometimes, for automation purposes, you would like to get the latest commit in a working copy. Below is how you do it. 1~$ git rev-parse --short HEAD Remove the --short HEAD if you need the longer version.https://quicktasks.ismael.casimpan.com/post/remove-large-files-committed-in-git/Sun, 21 Mar 2021 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/remove-large-files-committed-in-git/ It's quite annoying when you committed large files to git specially if it's something that's something confidential. We'll relatively easy to do that. Just use the 'filter-branch' command in git as follows: 1git filter-branch --force --index-filter \ 2> 'git rm --cached --ignore-unmatch path/to/huge-file.mp4' \ 3> --prune-empty --tag-name-filter cat -- --all You should be seeing something like below: 1~$ git filter-branch --force --index-filter \ 2> 'git rm --cached --ignore-unmatch content/sync/files/public/2020-04/Bad_Luck.mp4' \ 3> --prune-empty --tag-name-filter cat -- --all 4Rewrite 8dfc744d18880f14dbc8fcd09f50c4bc3ede71 (1049/1091)rm 'content/sync/files/public/2020-04/Bad_Luck.https://quicktasks.ismael.casimpan.com/post/pull-request-via-github-api/Tue, 08 Sep 2020 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/pull-request-via-github-api/ From the example in https://docs.github.com/en/rest/reference/pulls#create-a-pull-request, it seems quite easy: 1curl \ 2-X POST \ 3-H "Accept: application/vnd.github.v3+json" \ 4https://api.github.com/repos/octocat/hello-world/pulls \ 5-d '{"title":"title","head":"head","base":"base"}' The above means, create a pull request with title "title" with code in branch "head" against the branch in "base" for the repo https://github.com/octocat/hello-world.git In case you need to authenticate, add 1-u <user>:<GITHUB_TOKEN> before the -H 1curl \ 2-X POST \ 3-u your_user:DEFINED_GITHUB_TOKEN_HERE 4-H "Accept: application/vnd.github.v3+json" \ 5https://api.github.com/repos/octocat/hello-world/pulls \ 6-d '{"title":"title","head":"head","base":"base"}' You can also use a payload json file for this value:https://quicktasks.ismael.casimpan.com/post/add-linux-swap-file/Sun, 12 Jul 2020 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/add-linux-swap-file/ 1sudo dd if=/dev/zero of=/mnt/file.swap bs=1M count=512 2sudo mkswap /mnt/file.swap 3sudo chmod 0600 /mnt/file.swap 4sudo swapon /mnt/file.swap 5echo "/mnt/file.swap none swap sw 0 0" >> /etc/fstab See details in https://www.garron.me/en/linux/increase-swap-memory-linux.htmlhttps://quicktasks.ismael.casimpan.com/post/remove-group-sticky-bit/Sun, 12 Jul 2020 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/remove-group-sticky-bit/ 1chmod g-s <dirname_here> More details in https://serverfault.com/questions/238962/how-do-i-clear-the-s-permission-on-a-directory-in-linuxhttps://quicktasks.ismael.casimpan.com/post/security-updates-centos/Sun, 12 Jul 2020 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/security-updates-centos/ Is best done manually: 1sudo yum -y update --security 1The problem is that CentOS does not supply the necessary metadata in its yum repositories such that yum-plugin-security can function. In other words, yum-plugin-security does nothing, and the automation of security updates is a lost cause in CentOS. In fact, the CentOS developers go so far as to say this will never work. And yum-cron is no solution as it actually disables security updates from the CentOS repositories completely.https://quicktasks.ismael.casimpan.com/post/php5.4-to-php5.6-upgrade-in-centos/Sun, 12 Jul 2020 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/php5.4-to-php5.6-upgrade-in-centos/ NOTE: php5.4 and php5.6 is no longer supported. https://www.mojowill.com/geek/howto-install-php-5-4-5-5-or-5-6-on-centos-6-and-centos-7/https://quicktasks.ismael.casimpan.com/post/php5.6-to-php7.0-upgrade-in-centos7/Sun, 12 Jul 2020 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/php5.6-to-php7.0-upgrade-in-centos7/ NOTE: php5.6 and php7.0 is no longer supported. 1wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm 2wget http://rpms.remirepo.net/enterprise/remi-release-7.rpm 3rpm -Uvh remi-release-7.rpm epel-release-latest-7.noarch.rpm Then, enable "remi-php70" in /etc/yum.repos.d/remi-php70.repo Then, yum update php. Details in https://blog.remirepo.net/post/2016/02/14/Install-PHP-7-on-CentOS-RHEL-Fedorahttps://quicktasks.ismael.casimpan.com/post/ssl-connect-error-on-git-fetch/Fri, 12 Jun 2020 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/ssl-connect-error-on-git-fetch/ 1~$ git fetch 2fatal: unable to access 'https://github.com/icasimpan/example.git/': SSL connect error Fixed by: 1yum update -y nss curl libcurlhttps://quicktasks.ismael.casimpan.com/post/telling-git-to-use-specific-private-key/Fri, 29 May 2020 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/telling-git-to-use-specific-private-key/ Sometimes, you need to use specific keys. To do it, use ssh config, something like below in ~/.ssh/config 1host github.com 2HostName github.com 3IdentityFile ~/.ssh/id_rsa_github 4User git See details in https://superuser.com/questions/232373/how-to-tell-git-which-private-key-to-usehttps://quicktasks.ismael.casimpan.com/post/git-with-latest-commit-log-only/Tue, 26 May 2020 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/git-with-latest-commit-log-only/ In some situations, you only need the latest commit log, saving space in the process. You have to do it as follows: 1git clone --depth=1 REPOhttps://quicktasks.ismael.casimpan.com/post/build-ubuntu-kernel/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/build-ubuntu-kernel/ See https://wiki.ubuntu.com/Kernel/BuildYourOwnKernelhttps://quicktasks.ismael.casimpan.com/post/check-for-installed-packages/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/check-for-installed-packages/ 1apt list --installed See https://askubuntu.com/questions/17823/how-to-list-all-installed-packageshttps://quicktasks.ismael.casimpan.com/post/check-debian-package-content/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/check-debian-package-content/ 1dpkg-query -L <package_name>https://quicktasks.ismael.casimpan.com/post/check-debian-package-list/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/check-debian-package-list/ 1apt-cache pkgnameshttps://quicktasks.ismael.casimpan.com/post/check-debian-package-source/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/check-debian-package-source/ 1dpkg -s <package> 2apt-cache showpkg <package> See details in https://askubuntu.com/questions/8560/how-do-i-find-out-which-repository-a-package-comes-fromhttps://quicktasks.ismael.casimpan.com/post/check-specific-debian-package-update-info/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/check-specific-debian-package-update-info/ 1alaa@aa-lu:~$ apt-cache policy vlc 2vlc: 3Installed: 2.0.8-0ubuntu0.13.04.1 4Candidate: 2.0.8-0ubuntu0.13.04.1 5Version table: 6*** 2.0.8-0ubuntu0.13.04.1 0 7500 http://ae.archive.ubuntu.com/ubuntu/ raring-updates/universe i386 Packages 8500 http://security.ubuntu.com/ubuntu/ raring-security/universe i386 Packages 9100 /var/lib/dpkg/status 102.0.6-1 0 11500 http://ae.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages See https://askubuntu.com/questions/340530/how-can-i-check-the-available-version-of-a-package-in-the-repositorieshttps://quicktasks.ismael.casimpan.com/post/debian-package-list-to-be-updated/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/debian-package-list-to-be-updated/ 1/usr/lib/update-notifier/apt-check -phttps://quicktasks.ismael.casimpan.com/post/debian-package-search/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/debian-package-search/ 1root@jenkins3:~# apt-cache search chromedriver 2chromium-chromedriver - WebDriver driver for the Chromium Browser 3chromium-chromedriver-dbg - chromium-chromedriver debug symbols 4oxideqt-chromedriver - Web browser engine for Qt (transitional package)https://quicktasks.ismael.casimpan.com/post/locations-of-ppa-ubuntu/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/locations-of-ppa-ubuntu/ PPA or Personal Package Archive are unofficial and may therefore harm your system. It is always recommended to use official sources. Nevertheless, if you know what you're doing, proceed. It is in: 1/etc/apt/sources.list.d/ More info in https://askubuntu.com/questions/57326/where-is-the-ppa-sources-config-filehttps://quicktasks.ismael.casimpan.com/post/update-debian-php5.5-to-5.6/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/update-debian-php5.5-to-5.6/ See https://www.digitalocean.com/community/questions/how-to-upgrade-from-php-v-5-5-9-to-v-5-6https://quicktasks.ismael.casimpan.com/post/update-debian-php-7.0-to-7.1/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/update-debian-php-7.0-to-7.1/ 1sudo apt-get install -y python-software-properties 2sudo add-apt-repository -y ppa:ondrej/php 3sudo apt-get update -y 4sudo apt-get install -y $(apt-cache pkgnames | grep php7.1|tr "\n" " ") See https://www.vultr.com/docs/how-to-install-and-configure-php-70-or-php-71-on-ubuntu-16-04https://quicktasks.ismael.casimpan.com/post/upgrading-unsupported-debian-os/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/upgrading-unsupported-debian-os/ In our example, we have Debian Squeeze (6.0) and it's been unsupported since Feb 2016. We can no longer install nor update the packages until you point it to another source...the archives. So, in /etc/apt/sources.list, add you will see: 1deb http://ftp.us.debian.org/debian/ squeeze main 2deb-src http://ftp.us.debian.org/debian/ squeeze main Replace it with: 1deb http://archive.debian.org/debian squeeze main 2deb http://archive.debian.org/debian squeeze-lts main and you can now access 'apt-get' or 'dpkg' as before (but limited to what's in the archive).https://quicktasks.ismael.casimpan.com/post/updating-debian-kernel-only/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/updating-debian-kernel-only/ 1sudo apt-get update 2sudo apt-get install linux-virtual See details in https://www.digitalocean.com/community/tutorials/how-to-update-a-digitalocean-server-s-kernel#upgrading-only-the-latest-kernelhttps://quicktasks.ismael.casimpan.com/post/upgrade-debian-to-higher-lts/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/upgrade-debian-to-higher-lts/ 1do-release-upgrade See https://help.ubuntu.com/lts/serverguide/installing-upgrading.htmlhttps://quicktasks.ismael.casimpan.com/post/upgrade-single-debian-package/Mon, 30 Sep 2019 00:20:25 +0800https://quicktasks.ismael.casimpan.com/post/upgrade-single-debian-package/ 1apt-get install --only-upgrade <packagename> See details in https://askubuntu.com/questions/44122/how-to-upgrade-a-single-package-using-apt-gethttps://quicktasks.ismael.casimpan.com/post/quickly-work-git-code/Mon, 08 Apr 2019 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/quickly-work-git-code/ If you need less keystrokes in updating your git code specially if it's very minimal change, do the following: 1git clone https://<github_token_here>@github.com/icasimpan/quicktasks-git 2cd quicktasks-git 3git config user.name "Ismael Casimpan" 4git config user.email "ismael.angelo@casimpan.com"https://quicktasks.ismael.casimpan.com/post/git-cherrypick/Fri, 23 Nov 2018 06:03:11 +0800https://quicktasks.ismael.casimpan.com/post/git-cherrypick/ Cherry Picking in Git is quite easy: For single commit 1git checkout <destination_branch> 2git cherry-pick <hash-here> See https://swsblog.stanford.edu/blog/cherry-picking-small-git-lesson Multiple commit NOTE: only the commits between 'initial_commit_hash' and 'terminal_commit_hash' are merged. 1git checkout <destination_branch> 2git cherry-pick <initial_commit_hash>..<terminal_commit_hash> To include the 'initial_commit_hash' and 'terminal_commit_hash', use the following: 1git cherry-pick <initial_commit_hash>^..<terminal_commit_hash> Note that conflicts would pause cherry-picking and ask to resolve the conflict. You can then continue as follows: 1git cherry-pick --continue See details in https://medium.https://quicktasks.ismael.casimpan.com/post/compare-tag-contents-github/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/compare-tag-contents-github/ Example https://github.com/icasimpan/shcf/compare/shcf-v0.2.0...shcf-v0.3.0https://quicktasks.ismael.casimpan.com/post/deleting-local-git-tag/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/deleting-local-git-tag/ 1me@mysite:/var/www/sites/mysite.local$ git tag --delete origin :v1.56 2To git@git-server:mysite.git 3Deleted tag 'v1.56' (was f346d287f)https://quicktasks.ismael.casimpan.com/post/deleting-remote-git-repo/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/deleting-remote-git-repo/ 1me@mysite:/var/www/sites/mysite.local$ git push origin :release-redesign 2To git@git-server:mysite.git 3- [deleted] release-redesignhttps://quicktasks.ismael.casimpan.com/post/deleting-remote-git-tag/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/deleting-remote-git-tag/ 1me@mysite:/var/www/sites/mysite.local$ git push origin :v1.56 2To git@git-server:mysite.git 3- [deleted] v1.56https://quicktasks.ismael.casimpan.com/post/duplicating-git-repo/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/duplicating-git-repo/ 1git clone --bare https://example.com/repo.git 2cd repo.git 3git push --mirror https://remote-example.com/repo.git See https://help.github.com/articles/duplicating-a-repository/https://quicktasks.ismael.casimpan.com/post/git-log-ci-graph/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/git-log-ci-graph/ 1git log --graph --oneline --decorate --allhttps://quicktasks.ismael.casimpan.com/post/git-patch-creation-apply/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/git-patch-creation-apply/ See https://www.devroom.io/2009/10/26/how-to-create-and-apply-a-patch-with-git/https://quicktasks.ismael.casimpan.com/post/git-submodules/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/git-submodules/ See https://chrisjean.com/git-submodules-adding-using-removing-and-updating/https://quicktasks.ismael.casimpan.com/post/move-directory-in-git-to-another-repo/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/move-directory-in-git-to-another-repo/ See http://gbayer.com/development/moving-files-from-one-git-repository-to-another-preserving-history/https://quicktasks.ismael.casimpan.com/post/negating-contents-of-gitignore/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/negating-contents-of-gitignore/ See https://stackoverflow.com/questions/5533050/gitignore-exclude-folder-but-include-specific-subfolderhttps://quicktasks.ismael.casimpan.com/post/rename-git-branch/Sun, 08 Apr 2018 23:17:11 +0800https://quicktasks.ismael.casimpan.com/post/rename-git-branch/ If on a branch you want renamed 1git branch -m new-name If on a different branch 1git branch -m old-name new-name