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Commands by forcefsck from sorted by
Terminal - Commands by forcefsck - 9 results
tune2fs -l $(df -P / | awk 'NR==2 {print $1}') | sed -n 's/^.*created: *//p'
2012-05-31 12:12:35
User: forcefsck
Functions: awk df sed tune2fs
0

Find out the earliest installation time of a linux system by getting the / filesystem creation time. This example is only valid the os is installed on an ext2/3/4 filesystem.

xml2asc < inputfile > outputfile
2011-02-23 12:22:18
User: forcefsck
-3

For reverse, there's asc2xml

asc2xml < entitiesfile > utf8file

They come as a part of the html-xml-utils debian package.

PS. Tried to submit sample data, but the site autoconverted the non ascii to html entities. So a bit of imagination is needed.

exec 3<&0; ls -1N | while read a; do echo "Rename file: $a"; read -e -i "$a" -p "To: " b <&3 ; [ "$a" == "$b" ] || mv -vi "$a" "$b"; done
lsof -nP -c COMMAND | egrep -o '(TCP|UDP).*$' | sort -u
2011-01-25 12:04:13
User: forcefsck
Functions: egrep sort
Tags: egrep lsof udp tcp
0

Where COMMAND is the process(es) name. I prefer to get all states but you may add ESTABLISHED in the grep regex.

lsof -c apache2 | egrep -o 'TCP.*ESTABLISHED.*$'

-nP flags are optional and UDP is irrelevant for established connections

Similar but using the process id:

lsof -nP -p PID | egrep -o '(TCP|UDP).*$'
iperf -s
2011-01-24 07:58:38
User: forcefsck
8

On the machine acting like a server, run:

iperf -s

On the machine acting like a client, run:

iperf -c ip.add.re.ss

where ip.add.re.ss is the ip or hostname of the server.

perl -nle 'printf "%0*v8b\n"," ",$_;'
sudo hping3 -TV --tr-stop -n -2 -p 53 ns1.server.tld
2011-01-14 10:12:37
User: forcefsck
Functions: sudo
0

-T = traceroute

-V = verbose

--tr-stop = exit when target is reached

-n = don't do reverse lookups (faster)

-2 = udp

-p 53 = destination port 53 (dns), change to your needs

Useful when trying to debug a network with complex routing rules and/or multiple gateways.

for i in {1..6}; do printf "%0.2X:" $[ $RANDOM % 0x100 ]; done | sed 's/:$/\n/'
2010-12-07 19:26:58
User: forcefsck
Functions: printf sed
Tags: Network bash mac
2

Shorter and more straightforward.

Also in perl:

perl -e 'print join(":", map { sprintf "%0.2X",rand(256) }(1..6))."\n"'
alias duh='dulist=$(du -sh */); for i in T G M K; do printf "$dulist"|egrep "^[0-9\.]+$i" | sort -rn; done'
2010-12-07 11:11:26
User: forcefsck
Functions: alias du egrep printf sort
Tags: disk usage
-1

Alias to produce a list of all subdir sizes in current dir, in reverse order and human readable units. du is executed only once. Remove the slash after the asterisk to include files.