If you are not familiar with the use of terminal you must learn it for this course. You can watch the video below prepared for the Computer Programming course. You can follow the video with this repository.
To remind you, the basic commands are given as follows.
| Command | Funcitonality | Example Usage |
|---|---|---|
| cd | change directory | cd ~, cd /home/btu, cd /opt/openfoam10/tutorials |
| mkdir | make directory | mkdir -p lecture_01, mkdir -p car_case |
| cp | copy files/folders | cp -r lecture01 lecture_01, cp -r car_case carCase |
| rm | remove files/folders | rm -rf carCase |
| touch | make dummy file | touch a.txt |
| cat | print content of a file | cat a.txt |
| ls | list directory contents | ls, ls -l, ls -a |
| mv | move or rename files/folders | mv old_name.txt new_name.txt, mv file.txt /path/to/destination |
| pwd | print working directory | pwd |
| echo | display a line of text | echo "Hello World" |
| grep | search text using patterns | grep 'word' filename, grep -r 'word' /path/to/directory |
| find | search for files in a directory hierarchy | find / -name filename.txt |
| chmod | change file mode bits | chmod +x script.sh |
| chown | change file owner and group | chown user:group file |
| tail | output the last part of files | tail -n 5 file.txt |
| head | output the first part of files | head -n 5 file.txt |
| diff | compare files line by line | diff file1.txt file2.txt |
| tar | archive utility | tar -czvf archive.tar.gz /path/to/directory |
| gzip | compress or expand files | gzip file, gzip -d file.gz |
| unzip | extract compressed files in a ZIP archive | unzip file.zip |
| wc | print newline, word, and byte counts for each file | wc filename.txt |
| sort | sort lines of text files | sort file.txt |
| uniq | report or omit repeated lines | uniq file.txt |
| which | locate a command | which python |
| df | display disk space usage | df -h |
| du | estimate file space usage | du -sh /path/to/directory |
| exit | exits the terminal | exit |
| screen | dividing terminal into windows | screen -S cfd + ctrl+z S and ctrl+z \| for division |
Some other commands which make terminal use useful are as follows:
| Command | Funcitonality |
|---|---|
find $WM_PROJECT_DIR -type d -name '*fvPatch*' |
finds directories containing the string fvPatch in a file name |
find $WM_PROJECT_DIR -type f -name '*fvPatch*' |
finds files containing the string fvPatch in it |
find $FOAM_TUTORIALS -type f \| xargs grep -sl ' slip' |
finds tutorials using slip condition |
find $FOAM_SRC -name '*slip*' |
finds the source code where the slip boundary condition is located |
find $WM_PROJECT_DIR -type f \| xargs grep -sl 'noParallel' |
finds which applications do not run in parallel |