update add -p

.gitignore

@@ -0,0 +1 @@
+*.WIP

git/add.md

@@ -0,0 +1,46 @@
+# Git Add Methods
+## Git Add Lines
+### `git add -e`
+Select lines of changes interactively. This allows you to stage only specific lines of changes in a file.\
+Pros: More control over what gets staged.
+Cons: More manual work, you have to edit the patch file yourself, which can be error-prone and time-consuming.
+#### Guidelines:
+- The editor shows a unified diff patch of working tree changes.
+- `+` lines: additions in the working tree (will be staged if kept).
+- `-` lines: deletions in the working tree (will be staged if kept).
+- Context lines (no prefix): unchanged lines needed for patch context.
+- To stage an addition: keep the `+` line in the patch.
+- To NOT stage an addition: **delete** the `+` line from the patch.
+- To stage a deletion: keep the `-` line in the patch.
+- To NOT stage a deletion: **convert the `-` to a space**.
+- For modified content (shown with `-` lines followed by `+` lines):
+  - To NOT stage the modification: convert the `-` lines to spaces and remove the `+` lines.
+  - Note: modifying only half of the pair may cause confusing changes to the index.
+- To keep a line unchanged: leave context lines as-is.
+- If you want to decline the operation entirely, delete all lines of the patch.
+- If you break the patch, run `git checkout -- <file>` to undo, then run `git add -e` again.
+## Git Add Hunks
+### `git add -p`
+Select hunks of changes interactively. This allows you to stage only parts of the changes in a file.\
+Pros: Easier to use than the -e method for staging specific parts of changes.\
+Cons: Sometimes split won't work, which will force you to use the -e method.
+#### Guidelines
+- Run `git add -p <file>` or `git add -p` to go through patch hunks interactively.
+- For each hunk, choose:
+    - `y` to stage the hunk
+    - `n` to not stage the hunk
+    - `q` to quit; do not stage the hunk or any remaining ones
+    - `a` to stage the hunk and all later hunks in the file
+    - `d` to not stage the hunk or any later hunks in the file
+    - `g` to select a hunk to go to
+    - `/` to search for a hunk matching the given regex
+    - `j` to go to the next hunk
+    - `J` to go to the previous hunk
+    - `k` to go to the previous hunk
+    - `K` to go to the previous undecided hunk
+    - `s` to split the current hunk into smaller ones
+    - `e` to manually edit the current hunk
+    - `?` to print help
+- If you choose `s`, Git will attempt to split the hunk into smaller hunks so you can stage a smaller section.
+- If you choose `e`, Git opens the patch in a temporary editor; delete `+` lines you do NOT want staged and convert `-` lines to spaces to prevent staging their deletion, then save and close.
+- When finished, run `git status` to verify which hunks were staged.

k8s/api-resources.md

@@ -0,0 +1,75 @@
+# Kubernetes API Resources
+
+| NAME | SHORTNAMES | APIVERSION | NAMESPACED | KIND |
+|------|------------|------------|------------|------|
+| bindings | | v1 | true | Binding |
+| componentstatuses | cs | v1 | false | ComponentStatus |
+| configmaps | cm | v1 | true | ConfigMap |
+| endpoints | ep | v1 | true | Endpoints |
+| events | ev | v1 | true | Event |
+| limitranges | limits | v1 | true | LimitRange |
+| namespaces | ns | v1 | false | Namespace |
+| nodes | no | v1 | false | Node |
+| persistentvolumeclaims | pvc | v1 | true | PersistentVolumeClaim |
+| persistentvolumes | pv | v1 | false | PersistentVolume |
+| pods | po | v1 | true | Pod |
+| podtemplates | | v1 | true | PodTemplate |
+| replicationcontrollers | rc | v1 | true | ReplicationController |
+| resourcequotas | quota | v1 | true | ResourceQuota |
+| secrets | | v1 | true | Secret |
+| serviceaccounts | sa | v1 | true | ServiceAccount |
+| services | svc | v1 | true | Service |
+| mutatingwebhookconfigurations | | admissionregistration.k8s.io/v1 | false | MutatingWebhookConfiguration |
+| validatingadmissionpolicies | | admissionregistration.k8s.io/v1 | false | ValidatingAdmissionPolicy |
+| validatingadmissionpolicybindings | | admissionregistration.k8s.io/v1 | false | ValidatingAdmissionPolicyBinding |
+| validatingwebhookconfigurations | | admissionregistration.k8s.io/v1 | false | ValidatingWebhookConfiguration |
+| customresourcedefinitions | crd,crds | apiextensions.k8s.io/v1 | false | CustomResourceDefinition |
+| apiservices | | apiregistration.k8s.io/v1 | false | APIService |
+| controllerrevisions | | apps/v1 | true | ControllerRevision |
+| daemonsets | ds | apps/v1 | true | DaemonSet |
+| deployments | deploy | apps/v1 | true | Deployment |
+| replicasets | rs | apps/v1 | true | ReplicaSet |
+| statefulsets | sts | apps/v1 | true | StatefulSet |
+| selfsubjectreviews | | authentication.k8s.io/v1 | false | SelfSubjectReview |
+| tokenreviews | | authentication.k8s.io/v1 | false | TokenReview |
+| localsubjectaccessreviews | | authorization.k8s.io/v1 | true | LocalSubjectAccessReview |
+| selfsubjectaccessreviews | | authorization.k8s.io/v1 | false | SelfSubjectAccessReview |
+| selfsubjectrulesreviews | | authorization.k8s.io/v1 | false | SelfSubjectRulesReview |
+| subjectaccessreviews | | authorization.k8s.io/v1 | false | SubjectAccessReview |
+| horizontalpodautoscalers | hpa | autoscaling/v2 | true | HorizontalPodAutoscaler |
+| cronjobs | cj | batch/v1 | true | CronJob |
+| jobs | | batch/v1 | true | Job |
+| certificatesigningrequests | csr | certificates.k8s.io/v1 | false | CertificateSigningRequest |
+| leases | | coordination.k8s.io/v1 | true | Lease |
+| endpointslices | | discovery.k8s.io/v1 | true | EndpointSlice |
+| events | ev | events.k8s.io/v1 | true | Event |
+| flowschemas | | flowcontrol.apiserver.k8s.io/v1 | false | FlowSchema |
+| prioritylevelconfigurations | | flowcontrol.apiserver.k8s.io/v1 | false | PriorityLevelConfiguration |
+| helmchartconfigs | | helm.cattle.io/v1 | true | HelmChartConfig |
+| helmcharts | | helm.cattle.io/v1 | true | HelmChart |
+| addons | | k3s.cattle.io/v1 | true | Addon |
+| etcdsnapshotfiles | | k3s.cattle.io/v1 | false | ETCDSnapshotFile |
+| nodes | | metrics.k8s.io/v1beta1 | false | NodeMetrics |
+| pods | | metrics.k8s.io/v1beta1 | true | PodMetrics |
+| ingressclasses | | networking.k8s.io/v1 | false | IngressClass |
+| ingresses | ing | networking.k8s.io/v1 | true | Ingress |
+| ipaddresses | ip | networking.k8s.io/v1 | false | IPAddress |
+| networkpolicies | netpol | networking.k8s.io/v1 | true | NetworkPolicy |
+| servicecidrs | | networking.k8s.io/v1 | false | ServiceCIDR |
+| runtimeclasses | | node.k8s.io/v1 | false | RuntimeClass |
+| poddisruptionbudgets | pdb | policy/v1 | true | PodDisruptionBudget |
+| clusterrolebindings | | rbac.authorization.k8s.io/v1 | false | ClusterRoleBinding |
+| clusterroles | | rbac.authorization.k8s.io/v1 | false | ClusterRole |
+| rolebindings | | rbac.authorization.k8s.io/v1 | true | RoleBinding |
+| roles | | rbac.authorization.k8s.io/v1 | true | Role |
+| deviceclasses | | resource.k8s.io/v1 | false | DeviceClass |
+| resourceclaims | | resource.k8s.io/v1 | true | ResourceClaim |
+| resourceclaimtemplates | | resource.k8s.io/v1 | true | ResourceClaimTemplate |
+| resourceslices | | resource.k8s.io/v1 | false | ResourceSlice |
+| priorityclasses | pc | scheduling.k8s.io/v1 | false | PriorityClass |
+| csidrivers | | storage.k8s.io/v1 | false | CSIDriver |
+| csinodes | | storage.k8s.io/v1 | false | CSINode |
+| csistoragecapacities | | storage.k8s.io/v1 | true | CSIStorageCapacity |
+| storageclasses | sc | storage.k8s.io/v1 | false | StorageClass |
+| volumeattachments | | storage.k8s.io/v1 | false | VolumeAttachment |
+| volumeattributesclasses | vac | storage.k8s.io/v1 | false | VolumeAttributesClass |

linux/dotfiles.md

@@ -1,32 +1,32 @@
 # Dotfiles Management
 ## Create new bare repo
 ### 1. Initialize a bare repo in your home directory
-git init --bare $HOME/.dotfiles
+`git init --bare $HOME/.dotfiles`
 
 ### 2. Create an alias (add this to your .bashrc / .zshrc)
-alias config='git --git-dir=$HOME/.dotfiles/ --work-tree=$HOME'
+`alias config='git --git-dir=$HOME/.dotfiles/ --work-tree=$HOME'`
 
 ### 3. Hide untracked files (so 'config status' isn't noisy)
-config config --local status.showUntrackedFiles no
+`config config --local status.showUntrackedFiles no`
 
 ### 4. Start tracking files
-config add ~/.config/nvim/init.lua
+`config add ~/.config/nvim/init.lua`
-config add ~/.config/alacritty/alacritty.toml
+`config add ~/.config/alacritty/alacritty.toml`
-config commit -m "Add nvim and alacritty config"
+`config commit -m "Add nvim and alacritty config"`
-config push
+`config push`
 
 ## Clone to a new machine
 ### Clone repo
-git clone --bare https://github.com/you/dotfiles.git $HOME/.dotfiles
+`git clone --bare https://github.com/you/dotfiles.git $HOME/.dotfiles`
 
 ### Set up the alias again, then checkout
-alias config='git --git-dir=$HOME/.dotfiles/ --work-tree=$HOME'
+`alias config='git --git-dir=$HOME/.dotfiles/ --work-tree=$HOME'`
-config checkout
+`config checkout`
 
 ### If there are conflicts with existing files, back them up first
-mkdir -p ~/.config-backup && \
+`mkdir -p ~/.config-backup && \`
-config checkout 2>&1 | grep "\s\+\." | awk '{print $1}' | \
+`config checkout 2>&1 | grep "\s\+\." | awk '{print $1}' | \`
-xargs -I{} mv {} ~/.config-backup/{}
+`xargs -I{} mv {} ~/.config-backup/{}`
 ```
 
 ## Key Principles

linux/grep.md

@@ -0,0 +1,12 @@
+# Useful grep arguments
+## Search without case sensitivity
+`cat file.txt | grep -i "pattern"`
+## Add lines to match pattern
+### Before
+`cat file.txt | grep -B 3 "pattern"`
+### After
+`cat file.txt | grep -A 3 "pattern"`
+### Both
+`cat file.txt | grep -C 3 "pattern"`
+## Show line numbers with matches
+`cat file.txt | grep -n "pattern"`

tmux/shortcuts.md

@@ -1,21 +1,23 @@
 # tmux Shortcuts
+## tmux Commands Inside a Session
+`C-b :`
 ## Session management
-### Detach session
+### Detach Session
 `C-b d`
-### List sessions
+### List Sessions
 `C-b s`
-### Rename session
+### Rename Session
 `C-b $`
 ## Panes
-### Vertical split
+### Vertical Split
 `C-b %`
-### Horizontal split
+### Horizontal Split
 `C-b "`
-### Switch panes
+### Switch Panes
 `C-b r-arrow`
 `C-b l-arrow`
-## Text manipulation
+## Text Manipulation
-### tmux Copy mode
+### tmux Copy Mode
 `C-b [`
-### tmux Paste mode
+### tmux Paste Mode
 `C-b ]`