Results for “command substitution”
Small, practical examples. Search by task or narrow things down below.
Make a second copy of a practice file
Linux Commands: Make a second copy of a practice file using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Match a whole word
Linux Commands: Use grep -w to exclude a matching substring inside a longer word.
Linux Commands✓ Tested
Match any pattern from a file
Linux Commands: Use grep -F -f with one literal pattern per line.
Linux Commands✓ Tested
Match filenames without case sensitivity
Linux Commands: Use iname for a case-insensitive filename pattern.
Linux Commands✓ Tested
Normalize a path without requiring it to exist
Linux Commands: Use GNU realpath -m and relative-to to normalize dot segments.
Linux Commands✓ Tested
Pass an environment value to a child process
PowerShell: The process environment is inherited by a launched child PowerShell process.
PowerShell✓ Tested
Pass filenames with spaces through xargs
Linux Commands: Use null delimiters end to end instead of splitting filenames on whitespace.
Linux Commands✓ Tested
Prevent expansion with single quotes
Linux Commands: Prevent expansion with single quotes using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Print a first terminal message
Linux Commands: Print a first terminal message using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Print a selected range of lines
Linux Commands: Use sed -n with a line address to suppress other output.
Linux Commands✓ Tested
Print only duplicate values
Linux Commands: Use uniq -d after sorting to report each repeated value once.
Linux Commands✓ Tested
Print only the matching portions
Linux Commands: Use extended regex and -o to extract digit sequences.
Linux Commands✓ Tested