ubuntu: directives

ubuntu-directives

Commands:
    1. pwd: print working directory
    2. ls: list                     [ -s | -sh | -h]
    3. cd {
        root: cd /
        home: cd or cd ~
        up: cd..
        back: cd -
        }
    4. cp: copy                     [-r]
    5. rm: remove
    6. mv: move
    7. rmdir: remove directory (only empty) [-r]
    8. mkdir: make directory
    9. man man || info io
    10. date -s: {
            directive: {
                date nnddhhmmyyyy.ss
                date nnddhhmmyy.ss
                date nnddhhmm
                date nnddhhmm.ss
            }
            
            -------------------------------------------------------
            nn with two digit month (e.g. 01, 05, 12)
            dd with two digit day (e.g. 02, 24, 31)
            hh with two digit hour in 24 hour clock format ( 00, 03, 23)
            yy/yyyy with the year in two digit or four digit (optional)

    }
    11. blkid: view disk information
    12. fdisk -l: disk infor
    13. gedit /etc/fstab: settings of system mount
    14. change password {
        self: passwd
        other: passwd username
    }
    15. update sources list: sudo gedit /etc/apt/sources.list
    16. auto start: sudo gedit /etc/rc.local
    17. update: sudo apt-get autoclean & sudo apt-get update
    18. change folds mode: find /path/to/fold -type d -print0 | xargs -0 sudo chmod 755
    
    -------------------------------------------------------
    install tar.gz {
        tar -zxf [xx].tar.gz
        cd [xx]
        ./configure
        make
        sudo make install
    }

    unpack tar.gz: {
        tar -zxvf FileName.tat.gz -C/specif dir
    }

    install tar.bz2 {
        tar -jxvf FileName.tar.bz2
        cd [xx]
        ./configure
        make
        make install
    }
    
    install deb {
        sudo dpkg -i xxxx.deb
    }

    install rpm {
        sudo apt-get install alien
        sudo alien xxx.rpm #convert rmp to deb
        install deb

        or 
            rpm -ivh FileName.rpm 
    }

    -------------------------------------------------------
    -s: Summary | Size
    -h: Human Readable
    -r: Recursively
    -f: File
    -d: Directory
    -m: Using Megabytes

    --------------------------------------------------------
    1. df: display filesystem               [-h]
    2. du: display usage for a directory        [-h]
    3. free: display free amount of memory  [-m]
    4. top: display rrunning processes

    ---------------------------------------------------------
    Add New User:
        adduser newuser
        passwd newuser
        

    ==================================================
    Very Userful:
        tab: auto complete
        ctrl + r: search commands
        
        ctrl + a: start of line
        ctrl + e; end of line
        
        ctrl + shift + c: copy commands
        ctrl + shift + p: paste commands

        ctrl + k: deletes from the current cursor to end
        ctrl + u: deletes from the current cursor to start
        ctrl + w: deletes word before the cursor