Results for “command substitution”
Small, practical examples. Search by task or narrow things down below.
Restore the working location after an operation
PowerShell: Push-Location and Pop-Location manage a directory stack; finally ensures restoration.
PowerShell✓ 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
Search text without case sensitivity
Linux Commands: Use grep -i to match uppercase and lowercase variants.
Linux Commands✓ Tested
Set a file to a specific byte length
Linux Commands: Use truncate to shorten a known scratch file without replacing its inode.
Linux Commands✓ Tested
Set owner-only file permissions
Linux Commands: Use chmod 600 to allow only the owner to read and write a file.
Linux Commands✓ Tested
Show line numbers beside matches
Linux Commands: Use grep -n so a result identifies its position in the source file.
Linux Commands✓ Tested
Sort a small set of lines
Linux Commands: Sort a small set of lines using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Sort lines by numeric value
Linux Commands: Use sort -n so 10 sorts after 2 instead of before it.
Linux Commands✓ Tested
Sort records by a delimited field
Linux Commands: Select the exact sort key to avoid including later columns.
Linux Commands✓ Tested
Sort values in descending order
Linux Commands: Combine numeric sorting with reverse order.
Linux Commands✓ Tested
Sort version-like labels naturally
Linux Commands: Use GNU version sort to compare embedded digit runs numerically.
Linux Commands✓ Tested