Filesystems
local disk vs. NFS
root access in NFS
df
du
using /tmp
regular expressions
man ed
man regex
man -s 5 regex
text filters
cut
awk
grep
egrep
head
tail & tail -f
join
wc
sed
expand
tr
fmt
sort
uniq
zcat
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cool commands
at
cal
bg
fg
logger (cmd & pipeline)
mailx
netstat
ps
pgrep
pkill(killall)
strings
look
spell
diff & diff -r
find | xargs
tar (to /tmp, to pipeline)
tee & tee -a
dig
nslookup
whois -h (fucknsi, arin)
script
editors
ed
ex
edit
perl
pico
emacs
vi
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