| Command | meaning | example |
|---|---|---|
| man | View the manual for given command | |
pwd |
Print work directory | |
ls |
list files in current directory | |
ls -a |
List all files, including hidden files | |
ls -l |
List files in current directory AS a list | |
cd / |
Change directory to root | |
cd ~ |
Change directory to home | |
cp [origin] [destination] |
copy | cp text.txt . |
echo "hello" > file.txt |
print "hello" to file.txt | |
say "hello" |
Use the voice module to read the string "hello" | |
cat filename |
print filenamem | |
head filename |
print first x lines of filename | |
tail filename |
print last x line of filename | |
history > file1.txt |
replace contents of file1.txt with history | |
history >> file1.txt |
append contents of file1.txt with history | |
history \ grep "git" > file1.txt |
Find the word "git" in my history and replace the content of file1.txt with the result | |
find . -name "file*" |
find files and folders with the characters "file" AS part of the name | |
cd - |
go back to the most recent dir you've been in | |
chmod ---------- |
change permissions | |
which python3 |
Shows you where the python command is located | |
rm -rf folder_or_filename |
remove folder_filename forcefully recursively | |
history |
display past commands | |
touch scriptname.sh |
create shell script scriptname.sh | |
lsof -i tcp:8000 |
List open files on tcp port 8000 | |
kill -9 pid |
kills the process with the pid | |
| `lsof -t -i tcp:8000 | xargs kill -9` | kill all processes on port 8000 |
| option | Effect |
|---|---|
-r |
recursively |
-m |
message |
Change ~/.bash_profile, .profile or ~/.zscrc to set custom command aliases
| alias | Resolves to | Description |
|---|---|---|
zshcf |
vim ~/.zshrc | Edit zsh profile settings |
drwxr
rwx = Read Write Execute
| Directory | Owner | Group | User |
|---|---|---|---|
| - | - - - | - - - | - - - |
| d | rwx | rwx | rwx |
| 1 | 421 | 421 | 421 |
chmod 777 = read(4), write(2) and execute(1) right for owner(4), group(2) and user(1)
chmod 777 = give owner, group and user read, write and execute rights
chmod 444 = give owner, group and user read accessEverything is a file!
#!/bin/bash/
echo "starting script...
touch ~/Desktop/virus"
echo "creating virus"
echo "=============="
echo "adding to virus..."
find /Users/vkng/Dropbox/99_code/Python/CodingNomads -name "*week*" >> ~/Desktop/virus
open ~/Desktop/virus
#!/bin/bash/ is called the shbang