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shell function to make gnu info act like man.

I use this alias in my bashrc. The --vi-keys option makes info use vi-like and less-like key bindings.
This is sample output - yours may be different.
4

alias info='info --vi-keys'

eightmillion · 2010-02-16 16:35:17 4
shell function to make gnu info act like man.

For those who hate navigating info pages, a shell function which will dump the contents to stdout, then page it through less, thus acting like 'man'.
This is sample output - yours may be different.
9

myinfo() { info --subnodes -o - $1 | less; }

bartonski · 2010-02-16 13:09:32 11
Transfer Entire recursive from one host to another. Only copies files that are newer or do not exist

From opposite host To copy remote to local rsync -aE -e "ssh -pPortnumber" user@hostA:directory target_dir
This is sample output - yours may be different.
1

rsync -azE -e "ssh -pPortnumber" src_dir user@hostB:dest_dir

kkk · 2010-02-16 06:30:54 3
Automagically create a /etc/hosts file based on your DHCP list (only works on Linksys WRT54G router)

Will create a sample etc host file based on your router's dhcp list. Now I know this won't work on most routers, so please don't downvote it just because it doesn't work for you. Show Sample Output
This is sample output - yours may be different.
```
192.168.1.8	Wii
192.168.1.7	laptop-dell
192.168.1.145	<none>
192.168.1.6	laptop
192.168.1.9	server
192.168.1.10	laptop-dell
192.168.1.3	TIVO
192.168.1.4	BAUER-DESKTOP
```
0

curl -s -u $username:$password http://192.168.1.1/DHCPTable.htm | grep '<td>.* </td>' | sed 's|\t<td>$.*$ </td>\r|\1|' | tr '\n' ';' | sed 's/$[^;]*$;$[^;]*$;/\2\t\1\n/g'

matthewbauer · 2010-02-16 02:27:11 3
Limit the rate of traffic to a particular address with tc.

Tc is used to configure Traffic Control in the Linux kernel. See man tc for further details. This series of commands will limit the bandwidth of the specified device to the limit you set (300kbit in the second command) to the address you specify.
This is sample output - yours may be different.
0

tc qdisc add dev <dev> root handle 1: cbq avpkt 1000 bandwidth 100mbit;tc class add dev <dev> parent 1: classid 1:1 cbq rate 300kbit allot 1500 prio 5 bounded isolated;tc filter add dev <dev> parent 1: protocol ip prio 16 u32 match ip dst <ip> flowid 1:1

din7 · 2010-02-16 01:39:09 3
Get your commandlinefu points (upvotes - downvotes)

Like command #4845, prints score, number of entries, and average score.
This is sample output - yours may be different.
2

username=bartonski;curl -s http://www.commandlinefu.com/commands/by/$username/json|perl -e 'BEGIN{$s=0;$n=0};END{print "Score: $s\nEntries: $n\nMean: ";printf "%3.2f\n",$s/$n}' -0173 -nae 'foreach $f (@F){if($f =~ /"votes":"(-*\d+)"/){$s += $1; $n++;}}'

bartonski · 2010-02-16 01:03:29 4
shows the full path of shell commands
This is sample output - yours may be different.
0

type <command>

prayer · 2010-02-15 21:47:18 5
shows the full path of shell commands
This is sample output - yours may be different.
-1

whereis command

Matuda · 2010-02-15 19:31:59 3
shows the full path of shell commands

Show Sample Output
This is sample output - yours may be different.
```
which python
/usr/bin/python
```
4

which command

snl · 2010-02-15 19:26:37 3
whois multiple domains

Outputs multiple whois from a plain text file.
This is sample output - yours may be different.
-2

for domain in `cat list_of_domains.txt`; do echo $domain; whois $domain >> output.txt; done

pathcl · 2010-02-15 17:13:45 7
scp with compression.

-C is for compression.
This is sample output - yours may be different.
9

scp -C 10.0.0.4:/tmp/backup.sql /path/to/backup.sql

OJM · 2010-02-15 12:39:46 46
Show the ndd ip settings of a solaris device

This command is jsut for the main IP settings of ndd. if you need ip6 or icmp edit the text within the egrep inclusion area. Felix001 - www.Fir3net.com Show Sample Output
This is sample output - yours may be different.
```
ip_respond_to_echo_broadcast 0
ip_respond_to_echo_multicast 0
ip_respond_to_timestamp 0
ip_send_redirects 0
ip_debug 0
ip_mrtdebug 0
ip_ire_timer_interval 60000
ip_ire_arp_interval 60000
ip_ire_redirect_interval 60000
ip_def_ttl 255
ip_forward_src_routed 0
```
0

for i in `ndd /dev/ip \? | awk '{ print $1 }' | egrep -v "ip6|status|icmp|igmp|\?"` ; do echo $i `ndd -get /dev/ip $i` ; done | grep -v \?

felix001 · 2010-02-15 12:32:33 6
Get length of current playlist in xmms2
This is sample output - yours may be different.
1

xmms2 list | sed -n -e '1i\0' -e 's/^.*($[0-9]*$:$[0-9]*$)$/\1 60*\2++/gp' -e '$a\60op' | dc | sed -e 's/^ *//' -e 's/ /:/g'

mwgamera · 2010-02-15 10:37:48 14
Get URLs matching some xmms2 search
This is sample output - yours may be different.
0

xmms2 info $(xmms2 mlib search '<query>' | sed -ne 's/^00*$[1-9][0-9]*$.*$/\1/p') | awk -F' = ' '$1~/ url$/{print$2}'

mwgamera · 2010-02-15 10:24:15 3
download and unpack tarball without leaving it sitting on your hard drive
This is sample output - yours may be different.
17

wget -qO - http://example.com/path/to/blah.tar.gz | tar xzf -

BoxingOctopus · 2010-02-15 04:00:29 11
Reverse ssh

Both hosts must be running ssh and also the outside host must have a port forwarded to port 22.
This is sample output - yours may be different.
3

#INSIDE-host# ssh -f -N -R 8888:localhost:22 user@somedomain.org # #OUTSIDE-host#ssh user@localhost -p 8888#

Abiden · 2010-02-14 21:43:44 3
GREP a PDF file.

PDF files are simultaneously wonderful and heinous. They are wonderful in being ubiquitous and mostly being cross platform. They are heinous in being very difficult to work with from the command line, search, grep, use only the text inside the PDF, or use outside of proprietary products. xpdf is a wonderful set of PDF tools. It is on many linux distros and can be installed on OS X. While primarily an open PDF viewer for X, xpdf has the tool "pdftotext" that can extract formated or unformatted text from inside a PDF that has text. This text stream can then be further processed by grep or other tool. The '-' after the file name directs output to stdout rather than to a text file the same name as the PDF. Make sure you use version 3.02 of pdftotext or later; earlier versions clipped lines. The lines extracted from a PDF without the "-layout" option are very long. More paragraphs. Use just to test that a pattern exists in the file. With "-layout" the output resembles the lines, but it is not perfect. xpdf is available open source at http://www.foolabs.com/xpdf/
This is sample output - yours may be different.
27

pdftotext [file] - | grep 'YourPattern'

drewk · 2010-02-14 21:42:35 16
Turn shell tracing and verbosity (set -xv) on/off with 1 command!

Turn shell tracing and verbosity (set -xv) on/off in any Bourne-type shell If either -x or -v is set, the function turns them both off. If neither is on, both are turned on.
This is sample output - yours may be different.
4

xv() { case $- in *[xv]*) set +xv;; *) set -xv ;; esac }

cfajohnson · 2010-02-14 20:57:29 3
Geo Temp

Check your local temperature based on geolocation. Show Sample Output
This is sample output - yours may be different.
```
30
```
0

curl -s www.google.com/ig/api?weather=$(curl -s api.hostip.info/get_html.php?ip=$(curl -s icanhazip.com) | sed -e'1d;3d' -e's/C.*: $.*$/\1/' -e's/ /%20/g' -e"s/'/%27/g") | sed 's|.*<t.*f data="$[^"]*$"/>.*|\1\n|'

o0110o · 2010-02-14 19:44:54 4
gzip over ssh

I've kept the gzip compression at a low level, but depending on the cpu power available on the source machine you may want to increase it. However, SQL compresses really well, and I found even with -1 I was able to transfer 40 MiB/s over a 100 mbps wire, which was good enough for me.
This is sample output - yours may be different.
3

ssh 10.0.0.4 "cat /tmp/backup.sql | gzip -c1" | gunzip -c > backup.sql

kennethjor · 2010-02-14 19:09:07 4
Returns the number of cores in a linux machine.

Original article in http://www.howtogeek.com/howto/ubuntu/display-number-of-processors-on-linux/ Show Sample Output
This is sample output - yours may be different.
```
2
```
2

grep -c ^processor /proc/cpuinfo

alebairos · 2010-02-14 16:28:07 24
Get minimum, current, maximum possible resolution of Xorg
This is sample output - yours may be different.
-1

xrandr -q | grep -w Screen

hemanth · 2010-02-14 15:38:49 3
Get your commandlinefu points (upvotes - downvotes)

This will calculate the your commandlinefu votes (upvotes - downvotes). Hopefully this will boost my commandlinefu points. Show Sample Output
This is sample output - yours may be different.
```
37
```
9

username=matthewbauer; curl -s http://www.commandlinefu.com/commands/by/$username/json | tr '{' '\n' | grep -Eo ',"votes":"[0-9\-]+","' | grep -Eo '[0-9\-]+' | tr '\n' '+' | sed 's/+$/\n/' | bc

matthewbauer · 2010-02-14 04:32:36 11
Turn shell tracing and verbosity (set -xv) on/off with 1 command!

Running this command turns shell tracing and shell verbose debugging on or off. Not only does it do that, it also uses your terminals builtin method of setting colors to make debugging much easier. It looks at the current shell options contained in the $- special bash variable and that lets this function set the opposite of the current value. So from the shell you could do a: setx; echo "y" | ( cat -t ) | echo "d"; setx and it will turn on debbuggin. This is an amazingly useful function that is perfect to add system-wide by adding it to /etc/profile or /etc/bashrc.. You can run it from the shell, and you can also use it in your shell scripts like my .bash_profile - http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html Show Sample Output
This is sample output - yours may be different.
```
[2:0:646][srot@host:pts/1][/opt/SOURCE/screen-4.0.3]
$ echo "ulimit `ulimit -a|sed -e 's/.*$-[a-z]$) $.*$/ \1 \2/g'|tr -d \\012`"
echo "ulimit `ulimit -a|sed -e 's/.*$-[a-z]$) $.*$/ \1 \2/g'|tr -d \\012`"
ulimit -a|sed -e 's/.*$-[a-z]$) $.*$/ \1 \2/g'|tr -d \012
>>> sed -e 's/.*$-[a-z]$) $.*$/ \1 \2/g'
>>> ulimit -a
>>> tr -d 012
>>> echo 'ulimit  -c
 -d unlimited
 -e
 -f unlimited
 -i 55648
 -l 3
 -m 37
 -n
 -p 8
 -q 89
 -r
 -s 4
 -t unlimited
 -u
 -v unlimited
 -x unlimited'
ulimit  -c
 -d unlimited
 -e
 -f unlimited
 -i 55648
 -l 3
 -m 37
 -n
 -p 8
 -q 89
 -r
 -s 4
 -t unlimited
 -u
 -v unlimited
 -x unlimited
```
1

function setx(){ sed '/[xv]/!Q2' <<< $- && { set +xv; export PS4=">>> "; } || { export PS4="`tput setaf 3`>>> `tput sgr0`"; set -xv; }; }

AskApache · 2010-02-14 01:25:44 5
Geo Weather

Weather based on your location
This is sample output - yours may be different.
-4

curl -s http://www.google.com/ig/api?weather=$(curl -s "http://api.hostip.info/get_html.php?ip=$(curl -s icanhazip.com)" | grep City | sed 's/City: $.*$/\1/' | sed 's/ /%20/g' | sed "s/'/%27/g") | sed 's|.*<temp_f data="$[^"]*$"/>.*|\1\n|'

matthewbauer · 2010-02-13 21:42:48 11
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What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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display a smiling smiley if the command succeeded and a sad smiley if the command failed

you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

check open ports without netstat or lsof

Calculate N!

Same as the seq/bc solution but without bc.

Show the 20 most CPU/Memory hungry processes

This command will show the 20 processes using the most CPU time (hungriest at the bottom). You can see the 20 most memory intensive processes (hungriest at the bottom) by running: $ ps aux | sort +3n | tail -20 Or, run both: $ echo "CPU:" && ps aux | sort +2n | tail -20 && echo "Memory:" && ps aux | sort +3n | tail -20

Tracklist reaplace backspace to '-'

Requires perl 5.14 or greater

finds the c files with lines containing 'mcs', in the folders under the current folder

Print a file to a LPD server

You don't need cups =)

Start an X app remotely

Launch a gui app remotely. In this example smplayer is installed on the remote machine, and movie.avi is in the remote user's home dir. Note that stdout/stderr is still local, so you'll have feedback locally, add '&>/dev/null' to suppress. This is surprisingly not well known (compared to running an X app locally via ssh -X). (NB. if your distro requires ~/.Xauthority file present, then try -fX if you have problems) Resubmitted (and trimmed, thanks sitaram) due to ridiculous voting on previous submission. Fingers crossed, it gets a better rating this time.

Is today the last day of the month?

Nice simple example of something we can do in bash.

route output as next command's parameters

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