File Handling (Linux)
Introduction to Linux in HPC/Files
Jump to navigation
Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Tutorial | |
---|---|
Title: | Introduction to Linux in HPC |
Provider: | HPC.NRW
|
Contact: | tutorials@hpc.nrw |
Type: | Multi-part video |
Topic Area: | HPC Platforms |
License: | CC-BY-SA |
Syllabus
| |
1. Background and History | |
2. The Command Line | |
3. Linux Directory Structure | |
4. Files | |
5. Text display and search | |
6. Users and permissions | |
7. Processes | |
8. The vim text editor | |
9. Shell scripting | |
10. Environment variables | |
11. System configuration | |
12. SSH Connections | |
13. SSH: Graphics and File Transfer | |
14. Various tips |
This part of the tutorial will introduce how Linux deals with files and explain how to list, copy, move and find files in the directory structure.
Video
Info: | ll is an alias for ls -laF , often available by default on many Linux distributions. It provides additional information such as file sizes, modification dates and full paths in the case of links. |
Info: | ls -d * can be used to list only directory names instead of their contents when using the * pattern (or other wildcards). |
Quiz
1. Can you copy directory with
cp <old_dir> <new_dir>
?
Warning: | rm -f : no confirmation! Use with care. |
2. What would be a suitable wildcard for listing the files
test_01
, test_02
, test_03
and prod_02
but NOT test_04
and debug_02
Warning: | The shell expands wildcards before they are passed as arguments! In some cases (for example, when using find with a wildcard), you should enclose the wildcard in quotes: find . -type f -name "*test*" . |
Exercises in Terminal
1. Use the find command to search for files, whose name ends with dat, in your home directory.
Answer: |
The complete command is
|
2. Use the find command to search for directories, whose name begins with test and ends with _dir, in your home directory.
Answer: |
The complete command is find $HOME -type d -name "test*_dir" find can be used to search files and directories. $HOME is your home directory. -type d means only directory (not file) will be shown. -name "test*_dir" specifies the required directory name, which begins with test and ends with _dir. The wild card * matches any characters in between. |