How to redirect the output of the time command to a file in Linux?
Simple. The GNU time utility has an option for that.
But you have to ensure that you are not using your shell's builtin time command, at least the bash builtin does not provide that option! That's why you need to give the full path of the time utility:
/usr/bin/time -o time.txt sleep 1
Wrap time and the command you are timing in a set of brackets.
For example, the following times ls and writes the result of ls and the results of the timing into outfile:
$ (time ls) > outfile 2>&1Or, if you'd like to separate the output of the command from the captured output from time:
$ (time ls) > ls_results 2> time_results