Common Commands

CommandHelp Commands	Description
compgen -c	Show all commands
compgen -a	Show all alias commands
compgen -A function	Show available functions
man <command>	Show manual page of a command (more info than --help)
<command> --help	Show help page of a command (less info than man command)
<command> --version	Show version of a command

Modify Files & Folders
Description
ls -lah
List files/folders in current directory (+infos)
mkdir newdir
Create a new folder
cd somefolder
Change/switch to another directory
cp file.txt file-copy.txt
Copy a file
mv file.txt file-renamed.txt
Rename a file
mv file.txt /tmp
Move file to another folder
rm file.txt
Remove a file
find .rm -namerf file.txtfolder
SearchRemove forentire a filefolder (recursive)
ln -s original target
Create a symlink


du -csh .
Show size of current folder
df -h
Show partitions / drives
lsb_release -a
Show OS Version / Informations


pwd
Show path of current folder
Search & String Commands
Description
find . -name file.txt
Search for a file (recursive)
grep -rin "search string"
Search for a string in current folder (recursive)
grep -rin "search string" | cut -c 1-100
Search for a string in current folder + limit output of string
sed -Ei 's/someString/newString/g' file.txt
Replace "someString" with "newString" in a file
head file.txt
Show first 10 lines of file
tail file.txt
Show last 10 lines of file
cat file.txt
Show full content of file
OS Helper Commands
Description
du -csh .
Show size of current folder
df -h
Show partitions / drives
lsb_release -a
Show OS Version / Informations
Other helpful Commands
Description
which <command>
Show path location of a command
history | tail
Show last 10 lines of your history (commands)
bash myCustomScript.sh
Execute a custom shell script
wget https://www.somewhere495848.com/test.txt
Download a file