Commands using printf | commandlinefu.com

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Terminal - Commands using printf - 158 results

printf "%s\n" .*

2009-11-23 18:07:18

User: cfajohnson

Functions: printf

Tags: dotfiles

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Find all dot files and directories

In most modern shells, printf is a builtin command.

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printf "%s\n" ${PATH//:/\/* }

2009-11-20 22:55:59

User: cfajohnson

Functions: printf

Tags: list PATH

Up
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List all available commands (bash, ksh93)

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printf "%s\n" .*

2009-11-20 21:41:02

User: cfajohnson

Functions: printf

Tags: egrep ls dotfiles

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Find all dot files and directories

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cat *.c | { printf "se te du\nplot '-' t '' w dots\n"; tr '[[:upper:]]' '[[:lower:]]' | tr -s [[:punct:][:space:]] '\n' | sort | uniq -c | sort -nr | head -n 100 | awk '{print $1}END{print "e"}'; } | gnuplot

This is sample output - yours may be different.

$ cat *.c | { printf "se te du\nplot '-' t '' w dots\n"; tr '[[:upper:]]' '[[:lower:]]' | tr -s [[:punct:][:space:]] '\n' | sort | uniq -c | sort -nr | head -n 100 | awk '{print $1}END{print "e"}'; } | gnuplot

  60 .+-----+------+------+------+-------+------+------+------+------+-----++
     +      +      +      +      +       +      +      +      +      +      +
     |                                                                      |
  50 ++                                                                    ++
     |                                                                      |
     |.                                                                     |
     |.                                                                     |
  40 ++                                                                    ++
     |                                                                      |
     | ..                                                                   |
  30 ++                                                                    ++
     |   .                                                                  |
     |                                                                      |
  20 ++  ..                                                                ++
     |     ..                                                               |
     |       ..                                                             |
     |         ...                                                          |
  10 ++           ....                                                     ++
     |                ...............                                       |
     +      +      +      +      +   .......................................+
   0 ++-----+------+------+------+-------+------+------+------+------+-----++
     0      10     20     30     40      50     60     70     80     90    100

2009-11-20 14:53:26

User: taliver

Functions: awk cat head printf sort tr uniq

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Plot frequency distribution of words from files on a terminal.

Uses the dumb terminal option in gnuplot to plot a graph of frequencies. In this case, we are looking at a frequency analysis of words in all of the .c files.

export I=$(date +%s); watch -t -n 1 'T=$(date +%s);E=$(($T-$I));hours=$((E / 3600)) ; seconds=$((E % 3600)) ; minutes=$((seconds / 60)) ; seconds=$((seconds % 60)) ; echo $(printf "%02d:%02d:%02d" $hours $minutes $seconds) | toilet -f shadow'

2009-10-23 07:56:30

User: m33600

Functions: date echo export printf watch

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StopWatch, toilet version, amazing format inside terminal

already described on the other two versions, this one uses ascii characters on game style to display elapsed time.

2009-10-23 07:47:11

User: m33600

Functions: date echo export printf watch

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StopWatch, OnScreen version, blinking shily on all desktops

Variation of the theme, this one blinks in low profile on top level of X, ie, it is visible, indeed small.

Try changing fonts and sizes of osd_cat

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2009-10-23 07:31:44

User: m33600

Functions: date echo export printf watch

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StopWatch, simple text, hh:mm:ss using Unix Time

Works on real time clock, unix time based, decrementing the actual time from initial time saved in an environment variable exported to child process inside watch

Shows elapsed time from start of script in hh:mm:ss format

Non afected by system slow down due to the use of date.

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ord() { printf "%d\n" "'$1"; }

2009-10-17 22:02:52

User: zude

Functions: printf

Up
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Get decimal ascii code from character

printf treats first char after single ' as numeric equivalent

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printf "%d\n" "'A" "'B"

2009-10-17 09:50:44

User: twfcc

Functions: printf

Up
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get the ascii number with bash builtin printf

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chr() { printf \\$(printf %o $1); }

2009-10-16 19:10:44

User: zude

Functions: printf

Tags: ascii decimal convert

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Function to output an ASCII character given its decimal equivalent

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chr () { printf \\$(($1/64*100+$1%64/8*10+$1%8)); }

2009-10-15 07:01:54

User: dennisw

Functions: printf

Tags: ascii decimal convert

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Function to output an ASCII character given its decimal equivalent

I've corrected the function. My octal conversion formula was completely wrong. Thanks to pgas at http://mywiki.wooledge.org/BashFAQ/071 for setting me straight. The new function is from pgas and is very fast.

(printf "PERMISSIONS LINKS OWNER GROUP SIZE MONTH DAY HH:MM PROG-NAME\n" \ ; ls -l | sed 1d) | column -t

2009-10-08 11:53:38

User: opexxx

Functions: column ls printf sed

Tags: sed ls column printf

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Using column to format a directory listing

cat file.txt | while read line; do printf "%7.2f -> %7.2f\n" $line; done

2009-10-06 07:09:23

User: opexxx

Functions: cat printf read

Up
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Bashbuiltin printf

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find -type f -name "*.avi" -print0 | xargs -0 mplayer -vo dummy -ao dummy -identify 2>/dev/null | perl -nle '/ID_LENGTH=([0-9\.]+)/ && ($t +=$1) && printf "%02d:%02d:%02d\n",$t/3600,$t/60%60,$t%60' | tail -n 1

2009-09-24 15:50:39

User: syssyphus

Functions: find perl printf tail xargs

Tags: video audio mplayer perl find

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Get the total length of all video / audio in the current dir (and below) in H:m:s

change the *.avi to whatever you want to match, you can remove it altogether if you want to check all files.

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printf "%02u " {3..20}; echo

2009-09-18 18:48:41

User: Escher

Functions: printf

Tags: bash strings

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for loop with leading zero in bash 3

emulates bash4's "echo {03..20}"

Uses bash3 builtin function printf

yes "$(seq 1 255)" | while read i; do printf "\x1b[48;5;${i}m\n"; sleep .01; done

2009-09-05 04:01:23

User: unixmonkey4581

Functions: printf read sleep yes

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cycle through a 256 colour palette

Rainbow, instead of greys

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printf '%*s\n' 20 | tr ' ' '#'

2009-08-15 22:38:01

User: twfcc

Functions: printf tr

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Emulate perl 'print "#" x 20, "\n"'

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printf "%'d\n" 1234567

2009-08-15 14:48:56

User: twfcc

Functions: printf

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formatting number with comma

it is not work with Cygwin's bash3.X. Test in Linux.

use printf "%'f" number while it is floating point number

mkdir $(printf '%03d\n' {1..100})

2009-08-14 11:35:43

User: twfcc

Functions: mkdir printf

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make 100 directories with leading zero, 001...100, using bash3.X

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printf '\!:1\0\!:1\0\!:2' | mmencode | tr -d '\n' | sed 's/^/AUTH PLAIN /'

2009-08-04 05:04:50

User: vwal

Functions: printf sed tr

Tags: smtp testing development

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Create AUTH PLAIN string to test SMTP AUTH session

I use this as an alias:

alias authplain "printf '\!:1\0\!:1\0\!:2' | mmencode | tr -d '\n' | sed 's/^/AUTH PLAIN /'"

then..

# authplain someuser@somedomain.com secretpassword

AUTH PLAIN c29tZXVzZXJAc29tZWRvbWFpbi5jb20Ac29tZXVzZXJAc29tZWRvbWFpbi5jb20Ac2VjcmV0cGFzc3dvcmQ=

cat /dev/urandom|awk 'BEGIN{"tput cuu1" | getline CursorUp; "tput clear" | getline Clear; printf Clear}{num+=1;printf CursorUp; print num}'

2009-07-13 07:30:51

User: axelabs

Functions: awk cat printf

Tags: nawk awk clear tput

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Watch number of lines being processed on a clear screen

awk can clear the screen while displaying output. This is a handy way of seeing how many lines a tail -f has hit or see how many files find has found. On solaris, you may have to use 'nawk' and your machine needs 'tput'

tokill=`ps -fea|grep process|awk '{ printf $2" "}'`; kill -9 $tokill;

2009-07-11 01:40:29

User: jhansen

Functions: awk grep kill printf

-3

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kill some process (same as others) but parsing to a variable

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yes "$(seq 232 255;seq 254 -1 233)" | while read i; do printf "\x1b[48;5;${i}m\n"; sleep .01; done

2009-07-03 13:58:02

User: frans0023

Functions: printf read sleep yes

Tags: color shell demo

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Print a great grey scale demo !

Seen here: http://www.pixelbeat.org/docs/terminal_colours/

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awk '/sshd/ && /Failed/ {gsub(/invalid user/,""); printf "%-12s %-16s %s-%s-%s\n", $9, $11, $1, $2, $3}' /var/log/auth.log

2009-04-16 00:56:23

User: frailotis

Functions: awk printf

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Displays the attempted user name, ip address, and time of SSH failed logins on Debian machines

A variation of a script I found on this site and then slimmed down to just use awk. It displays all users who have attempted to login to the box and failed using SSH. Pipe it to the sort command to see which usernames have the most failed logins.

i=10;for o in *.mp3; do i=$(printf "%02d" $i); mv $o $i$o; ((i = $i + 2)); done

2009-04-13 12:33:52

User: bazzawill

Functions: mv printf

-1

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Precide a bunch of files with a number in a pattern for example to indisperse a podcast backlock with more recent podcasts

This command adds the numbers 10, 12, 14 to a bunch of mp3's in the current working directory. You can then run the command replacing the inital i=10 with i=11 to add 11,13,15 in another directory then mv the files together and the first files interweave with the second group of files. I used this to weave a backlog of a podcast with other podcast so I didn't get sick of one while I was catching up. I started at 10 because printf blows up with 0 padded numbers 08 and 09 which kind of makes the printf command redundant as it was used to pad numbers 1 - 9 so they would come first and not get sorted incorrectly

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