Terminal Exercises

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Loops

Saving to a file in a loop

In the exercise-data/alkanes directory, what is the effect of this loop?

for alkanes in *.pdb
do
    echo $alkanes
    cat $alkanes > alkanes.pdb
done

Prints cubane.pdb, ethane.pdb, methane.pdb, octane.pdb, pentane.pdb and propane.pdb, and the text from propane.pdb will be saved to a file called alkanes.pdb.

Prints cubane.pdb, ethane.pdb, and methane.pdb, and the text from all three files would be concatenated and saved to a file called alkanes.pdb.

Prints cubane.pdb, ethane.pdb, methane.pdb, octane.pdb, and pentane.pdb, and the text from propane.pdb will be saved to a file called alkanes.pdb.

None of the above.

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Introduction

Terminal Exercises

Navigating Files and Directories

Absolute vs relative paths

Absolute vs relative paths

Ls reading comprehension

Working With Files and Directories

Moving Files to a new folder

Renaming Files

Moving and Copying

List filenames matching a pattern

Pipes and Filters

Appending data

Piping commands together

Pipe construction

Which pipe?

Removing unneeded files

Loops

Write your own loop

Limiting sets of files

Saving to a file in a loop

Saving to a file in a loop - part 2

Shell Scripts

List unique species

Variables in shell scripts

Longest file with a given extension

Finding Things

Using grep

Tracking a species

Little women

Matching and subtracting

The end

The end

Memory usage

Import

Export

Reset your sandbox

Help