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Commands using printf

Commands using printf from sorted by
Terminal - Commands using printf - 117 results
members () { dscl . -list /Users | while read user; do printf "$user "; dsmemberutil checkmembership -U "$user" -G "$*"; done | grep "is a member" | cut -d " " -f 1; };
2012-05-20 11:34:33
User: eduo
Functions: cut grep printf read
Tags: function osx group dsmemberutil
0
Up
Down
OSX - Function to list all members for a given group

Group membership in OS X is a mish-mash of standards that end up meaning there's almost a half-dozen of ways to belong to a group, what with group inheritance and automatic assignment. This means there's no easy command to find out all groups a user belongs to. The only sensible way then is to list all users and then query each user for membership.

NOTE: This is a function. Once input you can execute it by calling with a groupname.

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printf "%$(tput cols)s\n"|tr ' ' '='
2012-04-21 23:26:55
User: webstandardcss
Functions: printf tr
9
Up
Down
A line across the entire width of the terminal

Use tput cols to find the width of the terminal and set it as the minimum field width.

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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
2012-04-03 06:41:43
User: hogofogo
Functions: printf read sleep yes
0
Up
Down
BW gradient
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
_p(){ ps ax |grep $1 |sed '/grep.'"$1"'/d' |while read a;do printf ${a%% *}' ';printf "${a#* }" >&2;printf '\n';done;}
2012-04-01 19:46:19
User: argv
Functions: grep printf ps read sed
0
Up
Down
w/o pgrep/pkill

proc lister

usage: p

proc killer

usage: p patt [signal]

uses only ps, grep, sed, printf and kill

no need for pgrep/pkill (not part of early UNIX)

_p(){

ps ax \

|grep $1 \

|sed '

/grep.'"$1"'/d' \

|while read a;do

printf ${a%% *}' ';

printf "${a#* }" >&2;

printf '\n';

done;

}

p(){

case $# in

0)

ps ax |grep .|less -iE;

;;

1)

_p $1;

;;

[23])

_p $1 2>/dev/null \

|sed '/'"$2"'/!d;

s,.*,kill -'"${3-15}"' &,'|sh -v

;;

esac;

}

alas, can't get this under 255 chars.

flatcap?

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
_p(){ ps ax |grep $1 |sed '/grep.'"$1"'/d' |while read a;do printf ${a%% *}' ';printf "${a#* }" >&2;printf '\n';done;}
2012-04-01 19:45:17
User: argv
Functions: grep printf ps read sed
0
Up
Down
process lister/killer - no pgrep and pkill

proc lister

usage: p

proc killer

usage: p patt [signal]

uses only ps, grep, sed, printf and kill

no need for pgrep/pkill (not part of early UNIX)

_p(){

ps ax \

|grep $1 \

|sed '

/grep.'"$1"'/d' \

|while read a;do

printf ${a%% *}' ';

printf "${a#* }" >&2;

printf '\n';

done;

}

p(){

case $# in

0)

ps ax |grep .|less -iE;

;;

1)

_p $1;

;;

[23])

_p $1 2>/dev/null \

|sed '/'"$2"'/!d;

s,.*,kill -'"${3-15}"' &,'|sh -v

;;

esac;

}

alas, can't get this under 255 chars.

flatcap?

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find /path/to/dir -iname "*.ext" -print0 | xargs -0 mplayer -really-quiet -cache 64 -vo dummy -ao dummy -identify 2>/dev/null | awk '/ID_LENGTH/{gsub(/ID_LENGTH=/,"")}{SUM += $1}END{ printf "%02d:%02d:%02d\n",SUM/3600,SUM%3600/60,SUM%60}'
2012-03-11 12:28:48
User: DarkSniper
Functions: awk find printf xargs
Tags: video audio mplayer awk find
0
Up
Down
Get the total length of all video / audio in the current dir (and below) in H:m:s

Improvement on Coderjoe's Solution. Gets rid of grep and cut (and implements them in awk) and specifies some different mplayer options that speed things up a bit.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
du -k | sort -n | perl -ne 'if ( /^(\d+)\s+(.*$)/){$l=log($1+.1);$m=int($l/log(1024)); printf ("%6.1f\t%s\t%25s %s\n",($1/(2**(10*$m))),(("K","M","G","T","P")[$m]),"*"x (1.5*$l),$2);}' | more
2012-02-07 15:49:19
User: Q_Element
Functions: du perl printf sort
Tags: perl, file sizes one line
0
Up
Down
One line Perl Script to determine the largest file sizes on a Linux Server

This one line Perl script will display the smallest to the largest files sizes in all directories on a server.

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genRandomText() { x=({a..z}); for(( i=0; i<$1; i++ )); do printf ${x[$((RANDOM%26))]}; done; printf "\n"; }
2012-01-26 08:19:33
User: uxseven
Functions: printf
Tags: random for loop
0
Up
Down
Generate Random Text based on Length

Here's my version. It's a bit lengthy but I prefer it since it's all Bash.

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VAR="%23%21%2fbin%2fbash" ; printf -v VAR "%b" "${VAR//\%/\x}" ; echo $VAR
2012-01-06 22:09:01
User: Corona688
Functions: echo printf
Tags: bash urldecod
0
Up
Down
urldecoding with one pure BASH builtin

You can use ordinary printf to convert "%23%21%2fbin%2fbash" into "#!/bin/bash" with no external utilities, by using a little known printf feature -- the "%b" specifier converts shell escapes. Replace % with \x and printf will understand the urlencoded string.

BASH's printf has an extension to set a variable directly, too. So you get to convert urlencoded strings from garble to plaintext in one step with no externals and no backticks.

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printf "$PWD/%s\n" *
2011-12-16 13:43:01
User: flatcap
Functions: printf
Tags: printf
3
Up
Down
list with full path

List the full path of some files.

You can add ".*" on the end if you want to display hidden files.

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hex() { printf "%X\n" $1; }
2011-12-13 04:45:21
User: 4Aiur
Functions: printf
Tags: bash hex numbers dc
7
Up
Down
convert from decimal to hexadecimal
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mplayer -endpos 0.1 -vo null -ao null -identify *.avi 2>&1 |grep ID_LENGTH |cut -d = -f 2|awk '{SUM += $1} END { printf "%d:%d:%d\n",SUM/3600,SUM%3600/60,SUM%60}'
2011-12-12 15:49:07
User: Coderjoe
Functions: awk cut grep printf
Tags: video audio mplayer perl find
0
Up
Down
Get the total length of all video / audio in the current dir in H:m:s

Better awk example, using only mplayer, grep, cut, and awk.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
awk 'BEGIN{FS=":"; print "digraph{"}{split($4, a, ","); for (i in a) printf "\"%s\" [shape=box]\n\"%s\" -> \"%s\"\n", $1, a[i], $1}END{print "}"}' /etc/group|display
2011-12-04 01:56:44
User: point_to_null
Functions: awk printf
Tags: ImageMagick awk dot
20
Up
Down
Print diagram of user/groups

Parses /etc/group to "dot" format and pases it to "display" (imagemagick) to show a usefull diagram of users and groups (don't show empty groups).

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
human_filesize() { awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } '}
2011-12-02 18:21:20
User: ArtBIT
Functions: awk printf
Tags: bash Linux awk filesize gawk human-readable
-1
Up
Down
Convert number of bytes to human readable filesize

Converts a number of bytes provided as input, to a human readable number.

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myhex=$(printf '%02X' ${myip//./ };)
2011-11-30 15:12:28
User: robinsonaarond
Functions: printf
Tags: IP hex printf octet
2
Up
Down
Convert IP octets to HEX with no dots.

Converts IP octets to hex using printf command. Useful for generating pxeboot aliases in the pxelinux.cfg folder.

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find . -type f -exec awk '/linux/ { printf "%s %s: %s\n",FILENAME,NR,$0; }' {} \;
2011-11-29 12:32:06
User: Neo23x0
Functions: awk find printf
Tags: solaris find grep unix aix recursive content
0
Up
Down
Rekursive Grep on Solaris or AIX Systems without GNU egrep -r funcionality
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while true; do cat /proc/net/dev; sleep 1; done | awk -v dc="date \"+%T\"" '/eth0/{i = $2 - oi; o = $10 - oo; oi = $2; oo = $10; dc|getline d; close(dc); if (a++) printf "%s %8.2f KiB/s in %8.2f KiB/s out\n", d, i/1024, o/1024}'
2011-11-21 05:24:44
User: point_to_null
Functions: awk cat printf sleep
Tags: awk sh
8
Up
Down
Show bandwidth use oneliner

poorman's ifstat using just sh and awk. You must change "eth0" with your interface's name.

Show sample output | Comments (5) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
awk '{ printf "%.2f", $2/1024/1024 ; exit}' /proc/meminfo
2011-11-12 15:38:56
User: benoit_c_lbn
Functions: awk printf
-3
Up
Down
Get memory total from /proc/meminfo in Gigs

when you can do it , avoid pipe

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whichpath() { local -A path; local c p; for c; do p=$(type -P "$c"); p=${p%/*}; path[${p:-/}]=1; done; local IFS=:; printf '%s\n' "${!path[*]}"; }
2011-09-16 15:55:15
User: RanyAlbeg
Functions: printf type
0
Up
Down
Which PATH variable should I use for this scirpt?

I find it useful when I want to add another crontab entry and I need to specify the appropriate PATH.

I give ''whichpath'' a list of programs that I use inside my script and it gives me the PATH I need to use for this script.

''whichpath'' uses associative array, therefore you should have Bash v4 in order to run it.

See sample output.

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i=60;while [ $i -gt 0 ];do if [ $i -gt 9 ];then printf "\b\b$i";else printf "\b\b $i";fi;sleep 1;i=`expr $i - 1`;done
2011-09-08 18:14:48
User: barnesmjsa
Functions: printf sleep
0
Up
Down
60 second on screen timer for bash scripts
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SCALE=3; WIDTHL=10; WIDTHR=60; BAR="12345678"; BAR="${BAR//?/==========}"; while read LEFT RIGHT rest ; do RIGHT=$((RIGHT/SCALE)); printf "%${WIDTHL}s: %-${WIDTHR}s\n" "${LEFT:0:$WIDTHL}" "|${BAR:0:$RIGHT}*"; done < dataset.dat
2011-08-22 19:35:21
User: andreasS
Functions: printf read
Tags: bash plot bar graph
0
Up
Down
Print a bar graph

WIDTHL=10 and WIDTHR=60 are setting the widths of the left and the right column/bar. BAR="12345678" etc. is used to create a 80 char long string of "="s. I didn't know any shorter way.

If you want to pipe results into it, wrap the whole thing in ( ... )

I know that printing bar graphs can be done rather easily by other means. Here, I was looking for a Bash only variant.

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isgd () { curl 'http://is.gd/create.php?format=simple&url='"$1" ; printf "\n" }
2011-08-14 23:31:39
User: dbbolton
Functions: printf
Tags: curl shorturl url
1
Up
Down
Generate a shortened URL with is.gd

Check the API. You shouldn't need sed. The print-newline at the end is to prevent zsh from inserting a % after the end-of-output.

Also works with http://v.gd

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arp-scan -I eth0 -l | perl -ne '/((\d{1,3}\.){3}\d{1,3})/ and $ip=$1 and $_=`nmblookup -A $ip` and /([[:alnum:]-]+)\s+<00>[^<]+<ACTIVE>/m and printf "%15s %s\n",$ip,$1'
2011-07-08 07:41:41
User: bandie91
Functions: arp perl printf
Tags: scan samba arp-scan netbios
1
Up
Down
Scan for [samba|lanman] NetBIOS names and ip addresses in LAN by ARP.
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printf "%02d:%02d\n" $(curl -s "http://search.twitter.com/search?from=zurvollenstunde&rpp=1" | grep -E '(Es ist jetzt|ago)' | sed 's/<[^>]*>//g;s/[^[:digit:]]//g' | xargs )
2011-06-19 18:16:00
User: torrid
Functions: grep printf sed xargs
-2
Up
Down
Get the rough (german) time from Twitter by @zurvollenstunde

Calc the rough time from Twitter. Now with leading Zeroes.

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mem(){ { case $1 in st*|[vgid]*) printf "%s " "$@";; *) dd if=$3 2>&1|sed '$!d;/^0/d;s/ .*//;s/^/'"$1"' '"$2"' 1 0 /; r '"$3"'' 2>/dev/null;;esac;printf "\r\nquit\r\n";}|nc -n 127.0.0.1 11211; }
2011-06-17 06:39:07
User: argv
Functions: dd printf sed
4
Up
Down
full memcache client in under 255 chars (uses dd, sed and nc)

usage: mem memcache-command [arguments]

where memcache-command might be:

set

add

get[s]

append

prepend

replace

delete

incr

decr

cas

stats

verbosity

version

notes:

exptime argument is set to 0 (no expire)

flags argument is set to 1 (arbitrary)

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