Guangyuan Yang yzgyyang

Software Engineer. @freebsd Committer. Also known as Charlie.

yzgyyang / Git_create_a_new_repo_based_on_existing_ones.md

Created June 28, 2017 21:55

Git create a new repo based on existing ones

cd to local repo containing old_branch and:

git push https://github.com/accountname/new_repo.git +old_branch:master

yzgyyang / FreeBSD_mount_img_files.md

Created June 28, 2017 20:46

FreeBSD mount img files

Determine the file system by using the file-utility.

file image.img

Use mdconfig to link the IMG image to a virtual device.

mdconfig -a -t vnode -f /path/to/image.img -u 0

yzgyyang / FreeBSD_backup_filesystem.md

Created June 20, 2017 15:15

FreeBSD backup filesystem

To dump a filesystem into /mnt (a filesystem mounted on a seperate disk)…

cd /mnt
dump -L -0 -f- /path/to/origin | restore -r -f-

For remote operations, pipe the restore command via ssh:

dump -L -0 -f- /path/to/origin | ssh -2 -C -l remoteuser 192.168.0.2 restore -r -f-

yzgyyang / Skip_sudo_password.md

Last active June 20, 2017 15:07

Skip sudo password

Edit the sudoers file:

sudo visudo

Find this line:

%sudo ALL=(ALL) ALL

yzgyyang / Git_discard_unstaged_changes.md

Last active June 12, 2017 13:55

Git discard unstaged changes

To remove all untracked files:

git clean -df

For a specific file use:

git checkout path/to/file/to/revert

yzgyyang / Git_remember_Github_login_credentials.md

Last active June 20, 2017 15:05

Git remember Github login credentials

Set git to use the credential memory cache:

git config --global credential.helper cache

To change the default password cache timeout, enter the following:

git config --global credential.helper 'cache --timeout=3600'
# (setting is in seconds)