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Linux CommandsGetting Started

Count newline-terminated records

Linux Commands: Count newline-terminated records using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
Linux CommandsSorting & joining records

Count repeated lines after sorting

Linux Commands: Group identical lines before uniq -c, then normalize its leading padding.

Linux Commands✓ Tested
GitGetting Started

Create a branch without switching to it

Git: Create a branch without switching to it inside the disposable repository created by the input setup.

Git✓ Tested
GitGetting Started

Create a first practice commit from staged changes

Git: Create a first practice commit from staged changes inside the disposable repository created by the input setup.

Git✓ Tested
Linux CommandsGetting Started

Create a practice directory

Linux Commands: Create a practice directory using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
C#LINQ transformations

Create a reusable one-to-many lookup

C#: ToLookup groups values by key and returns an empty sequence for an unknown key.

C#✓ Tested
Linux CommandsFiles & permissions

Create a second name for the same file

Linux Commands: Use ln for a hard link and inspect the shared link count.

Linux Commands✓ Tested
Linux CommandsArchive integrity & packaging

Create an archive from an explicit file list

Linux Commands: Use tar -T for a controlled list of relative archive members.

Linux Commands✓ Tested
Linux CommandsFiles & permissions

Create an empty file

Linux Commands: Use touch to create a file when absent; an existing file keeps its contents but gets updated timestamps.

Linux Commands✓ Tested
Linux CommandsGetting Started

Create an empty practice file

Linux Commands: Create an empty practice file using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
Linux CommandsFiles & permissions

Create private files with a restrictive umask

Linux Commands: Apply umask in a subshell so the surrounding shell is unaffected.

Linux Commands✓ Tested
CBinary formats & structured parsing

Decode a 16-bit big-endian integer

C: Promote bytes to an unsigned integer type before combining shifted values.

C✓ Tested