Results for “command”
Small, practical examples. Search by task or narrow things down below.
Remove an empty directory only
Linux Commands: Use rmdir so a directory containing files cannot be removed accidentally.
Linux Commands✓ Tested
Remove blank or whitespace-only lines
Linux Commands: Use a POSIX character class so tabs and spaces are handled together.
Linux Commands✓ Tested
Remove carriage-return characters
Linux Commands: Use tr -d to remove CR characters from Windows-style line endings.
Linux Commands✓ Tested
Rename a file with mv
Linux Commands: Rename a known file in the current directory and inspect its new contents.
Linux Commands✓ Tested
Rename a practice file
Linux Commands: Rename a practice file using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Reorder fields with a capture group
Linux Commands: Use extended regular expressions and backreferences to rearrange a known format.
Linux Commands✓ Tested
Replace text in a pipeline
Linux Commands: Replace text in a pipeline using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Restore an environment value after temporary use
PowerShell: Use finally so temporary process configuration does not leak to subsequent work; remove the entry when it was originally absent.
PowerShell✓ Tested
Restore the working location after an operation
PowerShell: Push-Location and Pop-Location manage a directory stack; finally ensures restoration.
PowerShell✓ Tested
Return text from a shell function
Capture a function’s output with command substitution.
function✓ Tested
Save a stream while displaying it
Linux Commands: Use tee to write a copy of standard input to a file.
Linux Commands✓ Tested
Search for a literal string
Linux Commands: Use grep -F when the pattern contains regex metacharacters that should be literal.
Linux Commands✓ Tested