This repository is tailored for my personal use, but I want to make it public because I hope this repo will serve as a useful reference for all who come hither.
That said, I will probably exclude things that I already know to heart, such as Vim and Eclipse bindings.
- Confluence
- Doxygen
- Eclipse
- Emacs
- Excel
- Fedora
- GDB
- Git
- IntelliJ IDEA
- Linux
- Netcat
- Connect to an address and port
- OpenSSL
- Outlook
- Python
- Qt Creator Cheat Sheet
- Regex
- PyTest
- Sublime
- Vim
- Command mode
- Insertion Mode
- Normal Mode
- Find all matches of word under cursor
- Jump to line number
- Movement
- Center page around cursor
- Change/delete next instance of enclosed characters within double quotation marks
- Change/delete next instance of enclosed characters within single quotation marks
- Move cursor to the next instance of 'a'
- Move cursor to right before the next instance of 'a'
- Move cursor to the previous instance of 'a'
- Move cursor to right after the previous instance of 'a'
- Move to next match
- Skip to previous blank line
- Skip to next blank line
- Visual Mode
- Plugins
- Visual Studio Code
- Windows
- XmlLint
- YouTube
CTRL + SHIFT + 8
CTRL + ALT + 0
CTRL + K
CTRL + SHIFT + 7
doxygen -g- Edit the newly generated Doxyfile to set the
RECURSIVEtag toYES. - To show private members, set
EXTRACT_PRIVATEtoYES. doxygen Doxyfile- Open up
html/index.html.
@fileand@briefmatters in the top-level comment at the start of the file.@briefdoes not matter in classes and functions.- A doxygen comment is required at the top of a namespace to generate doxygen for the members within.
- A doxygen comment is not required at the top of a class.
- Add
constto the end of@copydocifconstis part of the method signature. @param[in]does matter.@param [in]also works.@throwand@throwsboth work. Be sure to specify the exception, e.g.,@throw RuntimeError upon ....
CTRL + d
ESC + d
CTRL + a
ESC + b
CTRL + e
ESC + f
ALT + H + D + S
ALT + H + O + R
sudo dnf remove blahsudo dnf autoremovesudo dnf clean packages- Check for leftover configuration files within these folders:
/etc/usr/share~/.local~/.config
Command-line:
ulimit -c unlimited
grep -lr '<<<<<<<' . | xargs git checkout --ours
grep -lr '<<<<<<<' . | xargs git checkout --theirs
git checkout -b new-branch old-branch
git checkout -b new branch
git push --delete origin branch-name
git checkout local-branch-name -- local-file.txt
git checkout origin/upstream-branch-name -- upstream-file.txt
git cherry-pick commit-number-from-other-branch
git reflog
-
git reflog -
git cherry-pick local-commit-number -
Merge the changes
-
git cherry-pick continue
git remote set-url origin https://github.com/USERNAME/REPOSITORY.git
git reset --hard commit-number
git reset --soft commit-number
git reset --mixed commit-number
git pull
git reset --hard origin/branch-namegit clean -fdn
fis forcedis directorynis to preview changes (remove thenflag to actually clean)xis to remove ignored files
CTRL + F4
CTRL + X
CTRL + N
CTRL + SHIFT + N
CTRL + SHIFT + F
ALT + F7
CTRL + ALT + Left Arrow
Any of these keys will work:
CTRL + Left ClickCTRL + ALT + B
CTRL + ALT + S
ALT + LeftALT + Right
find ./ -name filename.txt
-inamecan be used for case insensitivity
ls -rt *.txt | xargs grep -lr --include=\*.txt 'searchterm' ./
env | grep ENV_VAR_NAME
ls -lta
tar -cvf sample.tar file1 file2
tar -czvf sample.tgz file1 file2
tar -tvf file.tgz
-tis shorthand for--test
tar -xvf file.tar
-xvfis shorthand for--extract --verbose --file
tar -C target-directory file.tgz
-Cchanges to the target directory before extracting the tar file
.taris the conventional file extension to indicate the tarball is storing uncompressed data..tgz,.tar.gz, and.gzare the conventional file extensions indicating the tarball is storing compressed data.
zip sample.zip file1 file2
zip -r sample.zip dir1/ dir2/
unzip file.zip
unzip -d target-directory file.zip
nc -vv address port
nc -vlp port
openssl genrsa -out private_key.key 1024
openssl rsa -in /dev/shm/key/private_key.key -out public_key.key -pubout -outform PEM
openssl dgst -sha224 -sign /dev/shm/key/private_key.key -out sample.digest sample.tgz
openssl dgst -sha224 -verify /dev/shm/key/public_key.key -signature sample.digest sample.tgz
* + <space>
CTRL + K
# Python 3.5+
p = subprocess.run(fullCmdStr,
shell=True,
check=False,
executable='/bin/bash')executabledefaults toshinstead ofbash.checkthrows an exception if the command failed.
p.returncodeis set to 0 if the command completed successfully.
F2
CTRL + L
CTRL + K
F4
| Syntax | Description |
|---|---|
| a | Match 'a' |
| \. | Match '.' |
| . | Match any single character except newline |
| Character Class | Description |
| [0-9] | Digits within this range |
| \d | Digits 0 through 9 |
| \D | Non-digits |
| [aeiou] | Match one of the given characters |
| [^aeiou] | Match any other character that is not given |
| [a-zA-Z] | Letter within this range (a-ZA-Z or A-Za-z) |
| \s | Whitespace [\r\n\t\f] |
| \S | Non-whitespace |
| \w | Word [a-z, A-Z, 0-9, underscores] |
| \W | Non-word |
| Quantifier | Description |
| [xy]{5} | Match a string of length 5 consisting of characters {x,y} |
| f{1,3} | Match 'f' 1, 2, or 3 times |
| \d{4,} | Match at least 4 digit characters |
| c* | Match 'c' 0 or more times |
| t+ | Match 't' 1 or more times |
| Operator | Description |
| [a|b] | Match 'a' or 'b' |
| ([A-Z]|[0-9]){2} | Apply quantifier to grouping of [A-Z] or [0-9] |
| Anchor | Description |
| ^ | Beginning of string |
| $ | End of string |
| Grouping and Capturing | Description |
| r'\b' | Word boundary special character (r is needed in Python to avoid confusion with the backspace character) |
| () | Capture a group |
| ? | Optionally capture this group |
| \1 | Matches the same text as previously matched by the first capturing group |
| (?|regex1|regex2) | Known as a 'branch reset group' that matches one of these groups or nothing |
| (\2two | (one))+ |
| Lookahead | Description |
| a(?!b) | Negative lookahead to notate that 'a' cannot be followed by 'b' |
| a(?=b) | Positive lookahead to notate that 'a' must be followed by 'b' |
| (?<=a)b | Positive lookbehind to notate that 'a' must precede 'b' |
| (?<!a)b | Negative lookbehind to notate that 'a' cannot precede 'b' |
(b?)o\1- Successfully matches 'o' because the backreference matches the nothing captured by the group
(b)?o\1- In most regex flavors (excluding JavaScript), this regex pattern fails to match 'o' because the backreference references a group that did not participate in the match at all
Add a loop inside the main.
CTRL + SHIFT + P
CTRL + SHIFT + K
ALT + Q
CTRL + ALT + D
CTRL + ALT + T
" Determine the current file format
:set ff?
" If the current file format is DOS, change the file format to Unix
:set ff=unix:%s;^\(\s\+\);\=repeat(' ', len(submatch(0))/2);g:%s/\t/ /g:retab" Jump to line 25
:25a
i
A
I
*
" Jump to line 25
25Gzz
ci"
di"
ci'
di'
fa
ta
Fa
Ta
;
{
}
v
V
CTRL + v OR CTRL + q
It should be noted that I rarely use Visual Studio Code these days.
- Bookmarks
- Bracket Pair Colorizer 2
- C/C++
- CMake
- CMake Tools
- CSS Peek
- Cython
- Material Icon Theme
- PlantUML
- Python
- Remote - WSL
- Trailing Spaces
- Currently, for a reason that I've long forgotten, I am not using this extension.
CTRL + ALT + -
F12
F11
Note that the setup below is still not as preferable as using the original Vim.
- Vim plugin installation
- Vim Plug
- https://github.com/neoclide/coc.nvim
ctrl+spaceautocompletiongdgoto definitionctrl+oto go backF2renameKshow tooltip- additional features
- autoimport
- syntax errors
:CocInstall coc-snippetsto install extensions- coc-snippets
:CocCommand snippets.editSnippets
- coc-pairs
- coc-prettier
- autoformat on save
- coc-snippets
- https://github.com/preservim/nerdtree
ctrl+ntoggle file tree
- https://github.com/Xuyuanp/nerdtree-git-plugin
- icons for file tree git status
- https://github.com/tiagofumo/vim-nerdtree-syntax-highlight
- https://github.com/ryanoasis/vim-devicons
- icons for file tree file extensions
- https://github.com/airblade/vim-gitgutter
- color code modified lines
]cjump to next modified line
- https://github.com/ctrlpvim/ctrlp.vim
ctrl+pfuzzy find files
- https://github.com/preservim/nerdcommenter
ctrl+/comment out code
- https://github.com/christoomey/vim-tmux-navigator
ctrl+lswitch to right panectrl+hswitch to left pane
- https://github.com/morhetz/gruvbox
- VS Code theme
- Click on the application to gain focus
- If you are confident that you have focus:
- To close the application, press
ALT + F4. - To minimize the application, press
n.
- To close the application, press
- Otherwise, press
ALT + SPACEto bring up the context menu.
xmllint --format old_file.xml > new_file.xml
xmllint --noout --schema schema.xsd file.xml
Bring up the browser console (F12 on Chrome), and inject:
for(element of document.getElementsByClassName('ytp-ce-element')) { element.style.display = 'none'; }