All TILs
linux·
cat spelled backwards
using tac to reverse a file line by line
we can use tac to print a file with its lines in reverse order.
e.g: for log files which we care about the most recent entries,
we can use tac.
print the whole log file in reverse order.
tac tmp/app.log
print 5 most recent log entries.
tac tmp/app.log | head -5
← All TILsMay 28, 2026