Difference between revisions of "Introduction to Linux in HPC/Files"
Introduction to Linux in HPC/Files
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− | + | === Exercises in Terminal === <!--T:5--> | |
1. Use the find command to search for files, whose name ends with dat, in your home directory. | 1. Use the find command to search for files, whose name ends with dat, in your home directory. |
Revision as of 17:13, 1 October 2020
Video
Linux Introduction Slides 51 - 56 (6 pages)
Slide Layout
page 1: Linux: extensions do not matter text file or binary file? file <filename> page 2: ls: mentioned in previous section mv: move cp: copy page 3: mkdir and touch rm: copy page 4: wild cards for patterns *, ? and [] page 5: find syntax allow complex search with wildcards allow execution with -exec page 6: wildcards expand before given to program find with wildcards as an example
Quiz
Can you copy directory with cp <old_dir> <new_dir>?
Info: | no tips in this section |
Warning: | rm -f: no confirmation! Use with care. (page 3) Wildcards expand before given to program. (page 6) |
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 find $HOME -type f -name "*dat" find can be used to search files and directories. $HOME is your home directory. -type f means only file (not directory) will be shown. -name "*dat" specifies the required filename and "*dat" restricts the filename ends with dat, while it can begin with any characters (the * wild cards). |
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. |