The snippet library.
Small, practical examples. Search by task or narrow things down below.
Count lines in a file
Count newline characters in a text file, printing only the count without the filename.
lines✓ Tested
Count matching lines
Linux Commands: Use grep -c to count matching lines rather than individual occurrences.
Linux Commands✓ Tested
Count newline-terminated records
Linux Commands: Count newline-terminated records using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Count repeated lines after sorting
Linux Commands: Group identical lines before uniq -c, then normalize its leading padding.
Linux Commands✓ Tested
Count whitespace-separated words
Linux Commands: Use wc -w with standard input to omit the filename column.
Linux Commands✓ Tested
Create a compressed tar archive
Bundle a directory into a gzip-compressed tar archive, preserving the directory structure.
tar✓ Tested
Create a directory tree
Create a directory and its missing parent directories. The -p option also succeeds when the directories already exist.
directory✓ Tested
Create a practice directory
Linux Commands: Create a practice directory using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
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
Create a symbolic link
Create a relative symbolic link to a file and inspect its target with readlink.
symlink✓ Tested
Create an archive from an explicit file list
Linux Commands: Use tar -T for a controlled list of relative archive members.
Linux Commands✓ Tested
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