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Commands by rubo77 from sorted by
Terminal - Commands by rubo77 - 8 results
hexdump -n6 -e '/1 ":%02X"' /dev/random|sed s/^://g
2015-01-19 03:09:43
User: rubo77
Functions: hexdump sed
3

Generate a random MAC address with capital letters

find /var/log -type f -iregex '.*[^\.][^0-9]+$' -not -iregex '.*gz$' 2> /dev/null | xargs tail -n0 -f | ccze -A
2014-07-29 17:11:17
User: rubo77
Functions: find tail xargs
Tags: unix ccze logging
4

This will show all changes in all log files under /var/log/ that are regular files and don't end with `gz` nor with a number

mkdir replaced;for i in *; do cat "$i"| sed 's/foo/bar/' > "replaced/$i"; done
2011-08-30 08:28:26
User: rubo77
Functions: cat mkdir sed
-5

if you want to replace "foo" with "bar" in all files in a folder, and put the resulting files into a new subfolder

ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'
IP=$(nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F# '{print $1}' | tail -n 1 ); R=3$((RANDOM%6 + 1)); PS1="\n\[\033[1;37m\]\u@\[\033[1;$R""m\]\h^$IP:\[\033[1;37m\]\w\$\[\033[0m\] "
2010-10-20 07:29:14
User: rubo77
Functions: awk grep nslookup tail
0

this adds a random color to your prompt and the external ip.

useful if you are using multiple mashines with the same hostname.

du -shc .[^.]* * | grep [MG]
2010-07-06 10:13:18
User: rubo77
Functions: du grep
-2

shows only folders, that are MB or GB in total size

UNIQUE_BY_MAC=$(ifconfig |grep eth0|awk '{ print strtonum("0x"substr($6,16,2)) }')
2010-06-01 17:34:43
User: rubo77
Functions: awk grep ifconfig
-3

gets the last number of the mac address to use it for other stuff

say='festival --tts'; S=$(date +%s); echo $(echo $S | cut -b 1-1)" billion" | $say ; echo $(echo $S | cut -b 2-4 | sed 's/0*//')" million"| $say; echo $(echo $S | cut -b 5-7 | sed 's/0*//')" thousand"| $say
2010-05-28 09:19:24
User: rubo77
Functions: cut date echo sed
1

you will hear how many seconds since 1.1.1970 in english words with billions, millions and thousands.

this is very useful, if you want to get over to use the unixtimestamp instead of the 24 hour clock in your dayly life