Commands tagged CLFUContest sorted by votes

Commands tagged CLFUContest (20)

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Check the current price of Bitcoin in USD

Show Sample Output
This is sample output - yours may be different.
```
1 BTC = 232.7678 USD
```
5

echo "1 BTC = $(curl -s https://api.coindesk.com/v1/bpi/currentprice/usd.json | grep -o 'rate":"[^"]*' | cut -d\" -f3) USD"

cadejscroggins · 2015-09-19 00:17:02 55
Get simple weather info from a zip code

weather 97405 Show Sample Output
This is sample output - yours may be different.
```
Eugene, OR | 55.1 degrees F | Clear
```
5

weather() { curl -s "http://www.wunderground.com/q/zmw:$1.1.99999" | grep "og:title" | cut -d\" -f4 | sed 's/°/ degrees F/'; }

cadejscroggins · 2015-09-19 07:57:47 12
Monitor memory fine-grained usage (e.g. firefox)

Sometimes top/htop don't give the fine-grained detail on memory usage you might need. Sum up the exact memory types you want
This is sample output - yours may be different.
2

watch "awk '/Rss/{sum += \$2; } END{print sum, \"kB\"}' < /proc/$(pidof firefox)/smaps"

gumnos · 2015-09-19 00:36:34 18
monitor what processes are waiting for IO interrupts
This is sample output - yours may be different.
2

while true; do date; ps auxf | awk '{if($8=="D") print $0;}'; sleep 1; done

tictacbum · 2015-09-19 07:23:32 11
Check how far along (in %) your program is in a file

Say you're started "xzcat bigdata.xz | complicated-processing-program >summary" an hour ago, and you of course forgot to enable progress output (you could've just put "awk 'NR%1000==0{print NR>"/dev/stderr"}{print}'" in the pipeline but it's too late for that now). But you really want some idea of how far along your program is. Then you can run the above command to see how many % along xzcat is in reading the file. Note that this is for the GNU/Linux version of lsof; the one found on e.g. Darwin has slightly different output so the awk part may need some tweaks. Show Sample Output
This is sample output - yours may be different.
```
        72
```
2

f=bigdata.xz; calc "round($(lsof -o0 -o "$f"|awk '{o=substr($7,3)}END{print o}')/$(stat -c %s "$f")*100)"

unhammer · 2015-09-19 18:27:12 14
keep a log of the active windows

This logs the titles of the active windows, thus you can monitor what you have done during which times. (it is not hard to also log the executable name, but then it is gets too long) Show Sample Output
This is sample output - yours may be different.
```
2015-09-24 00:58:24: Guake!
2015-09-24 00:59:24: Guake!
2015-09-24 00:60:25: Commands matching running program sorted by votes | commandlinefu.com 
```
2

while true; do (echo -n $(date +"%F %T"):\ ; xwininfo -id $(xprop -root|grep "ACTIVE_WINDOW("|cut -d\ -f 5) | grep "Window id" | cut -d\" -f 2 ) >> logfile; sleep 60; done

BeniBela · 2015-09-23 23:00:14 24
Monitor all DNS queries made by Firefox
This is sample output - yours may be different.
2

NSPR_LOG_MODULES=nsHostResolver:5 NSPR_LOG_FILE=/tmp/log.txt firefox

mhs · 2015-09-30 01:56:36 10
Grab the top 5 CLFUContest one-liners
This is sample output - yours may be different.
1

curl -sL http://goo.gl/3sA3iW | head -16 | tail -14

cadejscroggins · 2015-09-19 07:19:49 10
Should I be sleeping?
This is sample output - yours may be different.
1

[ $(date +"%H") -lt 7 ] && echo you should probably be sleeping...

cadejscroggins · 2015-09-19 08:14:57 11
Check if the LHC has destroyed the world

This says if the LHC has destroyed the world. Run it in a loop to monitor the state of Earth. Might not work reliable, if the world has actually been destroyed. Show Sample Output
This is sample output - yours may be different.
```
NO.
```
1

curl -s http://www.hasthelhcdestroyedtheearth.com/ | sed -En '/span/s/.*>(.*)<.*/\1/p'

BeniBela · 2015-09-23 12:30:31 12
Check if the LHC has destroyed the world

This says if the LHC has destroyed the world. Run it in a loop to monitor the state of Earth. Might not work reliable, if the world has actually been destroyed. Show Sample Output
This is sample output - yours may be different.
```
NO.
```
1

xidel --quiet http://www.hasthelhcdestroyedtheearth.com/ -e //span

BeniBela · 2015-09-23 12:31:55 12
Monitor all DNS queries seen by the local machine
This is sample output - yours may be different.
1

dnstop -l 3 enp1s0f0

mhs · 2015-09-30 01:55:11 9
Monitor all DNS queries made by Firefox Mac OS X version
This is sample output - yours may be different.
1

NSPR_LOG_MODULES=nsHostResolver:5 NSPR_LOG_FILE=/tmp/log.txt /Applications/Firefox.app/Contents/MacOS/firefox

bunam · 2015-09-30 11:36:05 9
List all the currently loaded old kernel packages, that is other than the active one
This is sample output - yours may be different.
0

dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d;s/^[^ ]* [^ ]* $[^ ]*$.*/\1/;/[0-9]/!d'

jeffskinnerbox · 2015-09-19 00:39:48 12
Check Twitter followers

See how many people are following you (or anyone) on Twitter. followers cadejscroggins Show Sample Output
This is sample output - yours may be different.
```
264 Followers
```
0

followers() { curl -s https://twitter.com/$1 | grep -o '[0-9,]* Followers'; }

cadejscroggins · 2015-09-19 07:07:36 12
Check if the LHC has destroyed the world

Use -q as first argument (as described in `man curl`) to ignore curlrc to ensure the output is always the same regardless of user's configuration. Show Sample Output
This is sample output - yours may be different.
```
NO.
```
0

curl -q -s http://www.hasthelhcdestroyedtheearth.com/ | sed -En '/span/s/.*>(.*)<.*/\1/p'

Tatsh · 2015-09-23 23:26:30 12
Monitor Ebay for cheap things with shipping

The ebay URL is the search query copied from the browser (here searching for bed stuff). The regex is for crap that should not be shown. Important is "Pickup only", which filters away all the things that cannot be shipped (a filter that cannot be done on Ebay's webpage). It will output the title and url for all matching items, for all pages of the search result. It also works for the German Ebay. Show Sample Output
This is sample output - yours may be different.
```
Instant Double Layer Round Lace Curtain Dome Bed Canopy Netting Princess Mos: http://www.ebay.com/itm/Instant-Double-Layer-Round-Lace-Curtain-Dome-Bed-Canopy-Netting-Princess-Mos-
Plastic Bed Frame Caster Insert Plugs, 1/2-Inch Outside Diameter, Set of 4: http://www.ebay.com/itm/Plastic-Bed-Frame-Caster-Insert-Plugs-1-2-Inch-Outside-Diameter-Set-of-4-
```
0

xidel --quiet 'http://www.ebay.com/sch/Beds-Bed-Frames-/175758/i.html?_from=R40&_sac=1&_sop=15&_nkw=bed' -e 'css(".lvresult")[not(matches(., "Pickup only|BUILDING PLANS $ONLY$|PARTS LIST"))]/css(".lvtitle")/(.||": "||a/@href)' -f 'css("a.gspr.next")'

BeniBela · 2015-09-24 12:11:13 11
See how much time you've spent logged in

Add -n to last command to restrict to last num logins, otherwise it will pull all available history. Show Sample Output
This is sample output - yours may be different.
```
421h:42m:18s
```
-1

last|grep `whoami`|grep -v logged|cut -c61-71|sed -e 's/[()]//g'|awk '{ sub("\\+", ":");split($1,a,":");if(a[3]){print a[1]*60*60+a[2]*60+a[3]} else {print a[1]*60+a[2] }; }'|paste -s -d+ -|bc|awk '{printf "%dh:%dm:%ds\n",$1/(60*60),$1%(60*60)/60,$1%60}'

donjuanica · 2015-09-19 03:02:43 9
Monitors battery usage (rate of energy charge/discharge)

Needs to be run in a battery sysfs dir, eg. /sys/class/power_supply/BAT0 on my system. Displays the battery's current charge and the rate per-second at which energy is {dis,}charging. All values are displayed as percentages of "full" charge. The first column is the current charge. The second is the rate of change averaged over the entire lifetime of the command (or since the AC cable was {un,}plugged), and the third column is the rate of change averaged over the last minute (controlled by the C=60 variable passed to awk). The sample output captures a scenario where I ran 'yes' in another terminal to max out a CPU. My battery was at 76% charge and you can see the energy drain starts to rise above 0.01% per-second as the cpu starts working and the fan kicks in etc. While idle it was more like 0.005% per-second. I tried to use this to estimate the remaining battery life/time until fully charged, but found it to be pretty useless... As my battery gets more charged it starts to charge slower, which meant the estimate was always wrong. Not sure if that's common for batteries or not. Show Sample Output
This is sample output - yours may be different.
```
 76 -00.00570 -00.00688
 76 -00.00567 -00.00626
 76 -00.00585 -00.00751
 76 -00.00582 -00.00751
 76 -00.00589 -00.00813
 76 -00.00585 -00.00751
 76 -00.00602 -00.00876
 76 -00.00599 -00.00876
 76 -00.00606 -00.00939
 76 -00.00603 -00.00876
 76 -00.00619 -00.01001
```
-1

while cat energy_now; do sleep 1; done |awk -v F=$(cat energy_full) -v C=60 'NR==1{P=B=$1;p=100/F} {d=$1-P; if(d!=0&&d*D<=0){D=d;n=1;A[0]=B=P}; if(n>0){r=g=($1-B)/n;if(n>C){r=($1-A[n%C])/C}}; A[n++%C]=P=$1; printf "%3d %+09.5f %+09.5f\n", p*$1, p*g, p*r}'

sqweek · 2015-09-19 15:45:40 11
Keep SSH tunnel open (PostgreSQL example)

Check if SSH tunnel is open and open it, if it isn't. NB: In this example, 3333 would be your local port, 5432 the remote port (which is, afaik, usually used by PostgreSQL) and of course you should replace REMOTE_HOST with any valid IP or hostname. The example above let's you work on remote PostgreSQL databases from your local shell, like this: psql -E -h localhost -p 3333
This is sample output - yours may be different.
-1

while true; do nc -z localhost 3333 >|/dev/null || (ssh -NfL 3333:REMOTE_HOST:5432 USER@REMOTE_HOST); sleep 15; done

rxw · 2015-09-21 02:25:49 11

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backup delicious bookmarks

Useful script to backup all your delicious bookmarks. With decilicious shutting down soon , it could be useful

list block devices

Shows all block devices in a tree with descruptions of what they are.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Suppress output of loud commands you don't want to hear from

This works even if there are spaces in any word in the command line.

Watch the size of a directory using figlet

You can substitute /home/$USER with any path you like.

remove recursively all txt files with number of lines less than 10

Fast portscanner via Parallel

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Redirect STDIN

Several times, I find myself hitting my up arrow, and changing the search term. Unfortunately, I find myself wasting too much time typing: $ grep kernel /var/log/messages Redirecting STDIN allows me to put the search term at the end so I less cursor movement to change what I'm searching for: $ < /var/log/messages grep kernel If you're using the emacs keyboard binding, then after you press your up arrow, press CTRL+w to erase the word. If this has already been submitted, I couldn't find it with the search utility.

Push a directory onto the stack

Use also with: Move to respective parameters == () { = +2; } === () { = +3; } ==== () { = +4; } Pop the last entry off the directory stack - () { popd ${1:+"$1"}; }

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Commands tagged CLFUContest (20)

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