list dir

ls [options] <path>

### count files in dir ###
ls -1 | wc -l

### required ###
<path> path to directory
               - empty: current dir
               - ../  : previous dir

### options ###
-l : show details (permissions, last mod, link src ... )
-a : show all, including hidden

change dir

cd <path>

### special ###
cd                    # return to /home dir
cd ..                 # one hierarchy up
cd ../..              # 2 hierarchy up
cd <subdir>    # goto subfolder

### legend ###
# <path>    :    full path of directory
# <subdir> :    name of subfolder

move

move/rename files/dir

mv <old_path> <new_path>

### special ###
mv <old_name> <new_name>    # rename, only if <new_name> not exists
mv <file_path> <dir_path>          # move file to new dir, no change in name
mv <old_path> .                           # move file to current dir (name unchanged)

### legends ###
# <old_path>     :    path to old dir/file (full/relative)
# <new_path>   :    path to new location
# <old_name>   :    original name of file/dir
# <new_name> :    new name of file/dir
# <file_path>     :    path to file
# <dir_path>      :    path to dir

softlink

create a shortcut link to source file / dir

ln -s <source> <link>

### legend ###
# <source> :    full path to source file / dir
# <link>       :    full path to shortcut link

compression

compress file using following command

tar -[options] <archive_file> <source_file/folder>
tar -czvf <archive_file>.tar.gz <source_file/folder>

### options ###
# -c : create new archive
# -z : compress with gzip
# -v : verbose
# -f : flag archive filename
# -x : extract archived file

compare

• gui

  • meld

  • tkdiff

• terminal

  • diff

meld

- dir
- text | |

meld <path0> <path1> ...

### legend ###
# <path?> :    path of files / dirs
# ...                 accepts multiple files / dirs (of same type)

installation

tkdiff

tkdiff<file0> <file1>

### legend ###
# <file?> :    path of files

installation

diff

tkdiff<file0> <file1>

### legend ###
# <file?> :    path of files