Commands tagged arithmetic sorted by votes

Commands tagged arithmetic (6)

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count how many times a string appears in a (source code) tree

grep -o puts each occurrence in a separate line
This is sample output - yours may be different.
9

$ grep -or string path/ | wc -l

ioggstream · 2009-07-16 12:50:59 7
Do quick arithmetic on numbers from STDIN with any formatting using a perl one liner.

Good for summing the numbers embedded in text - a food journal entry for example with calories listed per food where you want the total calories. Use this to monitor and keep a total on anything that ouputs numbers. Show Sample Output
This is sample output - yours may be different.
```
echo "I had 10 goats, then sam brought 5 more. \
Then we bought 4 more goats and 2 goats had babies. \
How many goats did we have?" | \
perl -ne '$sum += $_ for grep { /\d+/ } split /[^\d\-\.]+/; print "$sum\n"'
21

perl -ne '$sum += $_ for grep { /\d+/ } split /[^\d\-\.]+/; print "$sum\n"'
1, '2' | 3, (-2) -.5
3.5
```
3

perl -ne '$sum += $_ for grep { /\d+/ } split /[^\d\-\.]+/; print "$sum\n"'

obscurite · 2009-06-16 06:39:08 6
command line calculator (zsh version)

Like in bash.
This is sample output - yours may be different.
0

bc <<<"..."

mrbregis · 2013-09-04 14:14:49 8
count how many times a string appears in a (source code) tree

grep's -c outputs how may matches there are for a given file as "file:N", cut takes the N's and awk does the sum. Show Sample Output
This is sample output - yours may be different.
```
34
```
-2

grep -rc logged_in app/ | cut -d : -f 2 | awk '{sum+=$1} END {print sum}'

terceiro · 2009-07-15 14:16:44 9
command line calculator (zsh version)
This is sample output - yours may be different.
-2

zc () { for exp in $argv; do print "$exp = $(( exp ))"; done; }

dbbolton · 2012-01-27 00:51:42 7
command line calculator (zsh version)
This is sample output - yours may be different.
-5

python3

codygman · 2013-08-31 22:38:43 7

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Random quote from Borat -- no html parsing

Turns out smacie.com has a text file containing every single one of the borat quotes, each one on a newline. This makes it very convenient, as this can be done without any sed-parsing, and uses less bandwitdth! Note that borate quotes are quite offensive, much more so than "fortunes-off"!

Socksify any program to avoid restrictive firwalls

Require: - tsocks (deb pkg) - A working SOCKS proxy. It's easy with ssh: $ ssh -N -D localhost:1080 your.home.pc -p 443 - tsocks configuration in your /etc/tsocks.conf (for the previous): server = 127.0.0.1 server_port = 1080

Sort a character string

Sorts a character string, using common shell commands.

Shows what an RPM was compiled with.

\n Separates out the architectures on different lines.

send a .loc file to a garmin gps over usb

gps data from geocaching.com is provided for free in .loc format.

get you public ip address

Relies on ifconfig.me functioning. It's about as easy as it gets, and memorable to old geeks too.

Securely stream (and save) a file from a remote server

Securely stream a file from a remote server (and save it locally). Useful if you're impatient and want to watch a movie immediately and download it at the same time without using extra bandwidth. This is an extension of snipertyler's idea. Note: This command uses an encrypted connection, unlike the original.

Generate random IP addresses

It never ends

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"

Unite pdf files

pdfunite is a part of the poppler-utils. poppler-utils package is only 150KB. The alternative - pdftk package is 14MB! Install poppler-utils if you need simple pdf operation commands like unite, separate, info, text/html conversions

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Commands tagged arithmetic (6)

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