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Jul 25, 2025
Jul 24, 2025
GCI (Grid Convergence Index)
GCI (Grid Convergence Index) is a quantitative measure to assess mesh independence in CFD, as recommended by Roache (1994). It estimates the discretization error based on Richardson Extrapolation by comparing solutions on different mesh sizes.
Jul 17, 2025
OJS Migration
/home/new/public_html
cat /etc/apache2/sites-available/.ac.id.conf
RENAME DATABASE
mysqldump -u root -p old_db > old_db.sql
old_db to new_db
CREATE DATABASE new_db;
Jul 16, 2025
Jul 14, 2025
Jul 8, 2025
Mail Merge in Word
Untuk mengubah penulisan Rupiah dari excel mail merge ke word
{ MERGEFIELD Jumlah \# "#.##0" }
{ MERGEFIELD Jumlah \# "#.##0,00" }
Mengubah penulisan tanggal
{ MERGEFIELD date \@ "dd MMMM yyyy" }
Backup and Restore in Linux
BACKUP
tar -czvf filename.tar /var/www/html
RESTORE
tar -xzvf backup_name.tar.gz -C /path/to/restore_location
Jul 1, 2025
Upgrade Ubuntu 20.04 to 22.04 or 24.04
sudo apt update && sudo apt upgrade -y
sudo apt dist-upgrade -y
sudo apt autoremove --purge -y
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Pastikan kamu punya update-manager-core
:
sudo apt install update-manager-core
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sudo do-release-upgrade
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Jika belum tersedia, tambahkan flag -d
(development release):
sudo do-release-upgrade -d
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SETELAH BERHASIL UPGRADE KE 22.04 dan REBOOT
ulangi proses:
sudo apt update && sudo apt upgrade -y
sudo do-release-upgrade
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Jika upgrade belum tersedia (misalnya jika 24.04 baru rilis), tambahkan:
sudo do-release-upgrade -d
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SETELAH UPGRADE
Cek versi Ubuntu:
lsb_release -a