out of space on /root

[Ralf Mardorf]

Indeed, "cat" usually is redundant, but what could we do, if the log
file should be a binary?

Regarding performance there's no big difference between dash and
bash, however "tail" could replace "cat", but it can't replace
"strings". To read systemd log files, the "journalctl" command could be
used, as long as it's accessible, if not, then we need to use "strings".

[root at archlinux log]# time strings journal/*/* | tail | grep 13
_SOURCE_REALTIME_TIMESTAMP=1402628901348508

real	0m30.255s
user	0m28.657s
sys	0m1.243s
[root at archlinux log]# time dash -c "strings journal/*/* | tail | grep 13"
_SOURCE_REALTIME_TIMESTAMP=1402628901348508

real	0m30.047s
user	0m28.510s
sys	0m1.347s
[root at archlinux log]# tail journal/*/* | grep 13
Binary file (standard input) matches