Morse Code with Associative Array


 
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# 15  
Old 11-29-2014
Quote:
Originally Posted by ksmarine1980
Thank you both!

I'd like to get the output to print vertically (I find it easier to read that way), but want to keep the SP between words and the EOT at the end.
If you'd like to change the output from the script I suggested to look like:
Code:
...,---,...,SP
.----,SP
..---,SP
...--,SP
-,....,..,...,SP
..,...,SP
.-,SP
-,.,...,-,STOP,EOT

instead of what I showed before, change the line in that script:
Code:
	[8]="---..," [9]="----.," [ ]="SP," [.]="STOP," )

to:
Code:
	[8]="---..," [9]="----.," [.]="STOP," [ ]="SP
"  )

# 16  
Old 11-29-2014
Lightbulb

Quote:
Originally Posted by ksmarine1980
Now you're just showing off
Quote:
Originally Posted by ksmarine1980
Continuing my quest to learn BASH, Bourne, Awk, Grep, etc. on my own through the use of a few books. I've come to an exercise that has me absolutely stumped.

The specifics:
1. Using ONLY BASH scripting commands (not sed, awk, etc.), write a script to convert a string on the command line to Morse code. The script will handle only capital letters and numbers
2. It will convert the string given on the command line as in the
following example:
$ ./morse.bash “CAT IN”
-.-.,.-,-,SP,..,-.,EOT (SP is used for a space, and EOT for end of transmission).
3. An associative array is to be used for the “lookup table” to do the
conversion from a character to Morse Code.

This is my time using an associative array, so this exercise has me stumped. Any help, guidance, suggestions are greatly appreciated. Here's what I have so far:
...
If i did, it was by accident just because i had fun and got excited as it was and is also a challenge to me.
And it is a communication tool, so the 'encoding' must be possible both ways.

Code:
morse SOS. "1 2 3." "THIS IS A TEST."
...;---;...;STOPSP.----;SP..---;SP...--;STOPSP-;....;..;...;SP..;...;SP.-;SP-;.;...;-;STOPSPEOT

Code:
morse -l "...;---;...;STOPSP.----;SP..---;SP...--;STOPSP-;....;..;...;SP..;...;SP.-;SP-;.;...;-;STOPSPEOT"
SOS 
STOP
 
1 
2 
3 
STOP
 
THIS 
IS 
A 
TEST 
STOP
 



EOT

Ok, vice-versa encoding is working now:
Code:
morse -q SOS. "1 2 3." "THIS IS A TEST."|while read line;do morse -l "$line";done

SOS 
STOP
 
1 
2 
3 
STOP
 
THIS 
IS 
A 
TEST 
STOP
 
EOT

This stuff is really a good training excercise for shuffeling and parsinge strings and chars.
But by now, WAY too many hours invested in this, mostly just to get the output/handling as it looks now...
Code:
#!/bin/bash
# ------------------------------------------------------------------------
#
# Copyright (c) 2014 by Simon Arjuna Erat (sea)  <erat.simon@gmail.com>
# All rights reserved.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>
#
# ------------------------------------------------------------------------
#
#	Description:	  Translates STRING to MORSE and vice-versa
#	Resource:	  https://www.unix.com/shell-programming-and-scripting/253424-morse-code-associative-array.html
#	Resource:	  http://en.wikipedia.org/wiki/Morse_code
#	Original author:  ksmarine1980
#
#	Variables
#
	ME=${0##*/}
	ME=${ME/.sh/}
	script_version=0.6
	declare -A morse  # Declare associative array
	declare -A letter  # Declare associative array
	declare -u input  # Force upper case
	SKIP=0		  # Skip this many 'chars' :: SP, print space at SKIP=1
	STRING=""	  # Contains the current signs for a char
	NL=""		  # Newline for final linebreak: EOT
	LB=""		  # Fixed linebreak after a word?
	EOT=true	  # Show EOT after each call, very annoying while reading a file with just a word list
	
	morse[A]=".-"	;	morse[B]="-..."	;	morse[C]="-.-."
	morse[D]="-.."	;	morse[E]="."	;	morse[F]="..-."
	morse[G]="--."	;	morse[H]="...."	;	morse[I]=".."
	morse[J]=".---"	;	morse[K]="-.-"	;	morse[L]=".-.."
	morse[M]="--"	;	morse[N]="-."	;	morse[O]="---"
	morse[P]=".--."	;	morse[Q]="--.-"	;	morse[R]=".-."
	morse[S]="..."	;	morse[T]="-"	;	morse[U]="..-"
	morse[V]="...-"	;	morse[W]=".--"	;	morse[X]="-..-"
	morse[Y]="-.--"	;	morse[Z]="--.."	;	morse[1]=".----"
	morse[2]="..---";	morse[3]="...--";	morse[4]="....-"
	morse[5]=".....";	morse[6]="-....";	morse[7]="--..."
	morse[8]="---..";	morse[9]="----.";	morse[0]="-----"
	morse[ ]="SP"	;	morse[.]="STOP"
#
#	Options
#
	for A in "${@}"
	do	case "$A" in
		-l)	LB="\n"	
			shift	;;
		-q)	EOT=false
			shift	;;
		-h|--help)
			echo "
$ME ($script_version)
Usage:	$ME [options] \"STRING\"

\"STRING\" can be either a word or morse code.
Either way it could also be a line-feed.

Where options are:
[-l]	Print one word per line
[-q]	Quiet, print no EOT upon exit
"
			exit
			;;
		esac
	done
#
#	Functions OR the Array
#
#	${letter["MORSECODE"]} vs. $(morse2char "MORSECODE")
#	Note that i used the function since i had forgotten to declare the 'letter' array at first,
#	so it didnt work upon the first try.
#
	morse2char() { # "...--"
	# Expects a string with dots and dashes which as whole represents a single character
	# Prints the according letter, or a question mark if nothing matches
		CODE="$1"
		case "$CODE" in
		".-")		printf A	;;
		"-...")		printf B	;;
		"-.-.")		printf C	;;
		"-..")		printf D	;;
		".")		printf E	;;
		"..-.")		printf F	;;
		"--.")		printf G	;;
		"....")		printf H	;;
		"..")		printf I	;;
		".---")		printf J	;;
		"-.-")		printf K	;;
		".-..")		printf L	;;
		"--")		printf M	;;
		"-.")		printf N	;;
		"---")		printf O	;;
		".--.")		printf P	;;
		"--.-")		printf Q	;;
		".-.")		printf R	;;
		"...")		printf S	;;
		"-")		printf T	;;
		"..-")		printf U	;;
		"...-")		printf V	;;
		".--")		printf W	;;
		"-..-")		printf X	;;
		"-.--")		printf Y	;;
		"--..")		printf Z	;;
		".----")	printf 1	;;
		"..---")	printf 2	;;
		"...--")	printf 3	;;
		"....-")	printf 4	;;
		".....")	printf 5	;;
		"-....")	printf 6	;;
		"--...")	printf 7	;;
		"---..")	printf 8	;;
		"----.")	printf 9	;;
		"-----")	printf 0	;;
		"SP")		printf " "	;;
		# NOTE that for 'style' reasons, i wanted to keep the word 'STOP' when printing words.
		#"STOP")		printf "."	;;
		*)		printf "$CODE?"	;;
		esac
	}
	letter[".-"]=A	;	letter["-..."]=B;	letter["-.-."]=C
	letter["-.."]=D	;	letter["."]=E	;	letter["..-."]=F
	letter["--."]=G	;	letter["...."]=H;	letter[".."]=I
	letter[".---"]=J;	letter["-.-"]=K	;	letter[".-.."]=L
	letter["--"]=M	;	letter["-."]=N	;	letter["---"]=O
	letter[".--."]=P;	letter["--.-"]=Q;	letter[".-."]=R
	letter["..."]=S	;	letter["-"]=T	;	letter["..-"]=U
	letter["...-"]=V;	letter[".--"]=W	;	letter["-..-"]=X
	letter["-.--"]=Y;	letter["--.."]=Z;	letter[".----"]=1
	letter["..---"]=2;	letter["...--"]=3;	letter["....-"]=4
	letter["....."]=5;	letter["-...."]=6;	letter["--..."]=7
	letter["---.."]=8;	letter["----."]=9;	letter["-----"]=0
	letter["SP"]=" ";	letter["STOP"]="."
#
#	Action
#
	[[  -z $LB ]] && NL="" || NL="$LB"
	while [ $# -gt 0 ];do
		# Now that the options are parsed, we can set the input to the current argument
		input="$1"
		if [[ "." = "${input:0:1}" ]] || [[ "-" = "${input:0:1}" ]]
		then	# Its morse to letters
			for (( i = 0; $i < "${#input}"; i = $i +1 ))
			do	CHAR="${input:$i:1}"
				#  Enable NewLine if LineBreak is active
				[[  -z $LB ]] && NL="" || NL="$LB"
				if [[ $SKIP -gt 0 ]]
				then	# Skip this many times
					[[  -z $LB ]] && NL="" || NL="$LB"
					STRING+="$CHAR"
					SPACE=" "
					# Do action according to SPECIAL word, or part of it.
					case "$STRING" in
					SP)	printf "%s" "$(morse2char $STRING)"
						STRING=""
						SPACE=""	;;
					ST)	SKIP=2		;;
					STOP)	printf "%s" "$(morse2char $STRING)"
						#printf "$NL"
						STRING=""	;;
					esac
					[[ $SKIP -eq 1 ]] && printf "$SPACE$NL" && NL=""
					SKIP=$(($SKIP-1))
				else	# Decide action upon current 'CHAR', or SIGN respectivly
					case "$CHAR" in
					S)	# Make sure there is no accidental line break
						SKIP=1
						STRING="$CHAR"
						;;
					E)	# Make line break at End Of Transmission
						SKIP=3 ; NL="\n" 
						;;
					";")	# Word-end, print it and clean it
						[[ -z "$STRING" ]] || printf $(morse2char "$STRING")
						STRING=""
						;;
					*)	# Add char to word
						STRING+="$CHAR"
						;;
					esac
				fi
				# Print STOP and optional a new line, if linebreak is active
				# Note that for style reasons i want to keep the word STOP, rather than the dot char/sign.
				[[ STOP = $STRING ]] && printf "$STRING$NL" && STRING=""
			done
			# 'WORD' is done...
			# Print a new line, if linebreak is active
			printf "$NL"
		else	# Its letters to morse
			for (( i = 0; $i < "${#input}"; i = $i +1 ))
			do	N=${input:$i:1}
				case "$N" in
				" ")	printf "%s$NL" "SP"	;;
				".")	printf "%s$NL" "STOP"	;;
				*)	printf "%s" "${morse[$N]};" ;;
				esac
			done
			# Print 'SP'ace and a new line, if linebreak is active
			printf "SP$LB"
		fi
		# Skip to next 'WORD', print a new line, if linebreak is active
		printf "$NL"
		# Remove current argument $1
		shift
	done
	# All is done, show EOT unless its quiet (helps while reading lines from a text file)
	$EOT && printf "$NL%s\n" EOT || printf "\n"

Play with it, change the usage of the function morse2char to be using the letter["..."] array.
Make your own experiments.
Make one script to encode, and another to decode, then try to combine them.

Hope you like it
# 17  
Old 11-29-2014
I've run into one small issue with the space (SP) character. On the command line, if I type ./morse.bash "CAT IN" the output is -.-.,.-,-,SP..,-.,EOT. I can't figure out why two .. are following the SP. Here's my code:

Code:
morse[A]=".-,"
sorsssB]="-...,"
sorse[C]="-.-.,"
sorssss]="-..,"
sorsssE]=".,"
sorse[F]="..-.,"
morse[G]="--.,"
morse[H]="....,"
morse[I]="..,"
morse[J]=".---,"
morse[K]="-.-,"
morse[L]=".-..,"
morse[M]="--,"
morse[N]="-.,"
morse[O]="---,"
morse[P]=".--.,"
morse[Q]="--.-,"
morse[R]="--.-,"
morse[S]="...,"
morse[T]="-,"
morse[U]="..-,"
morse[V]="...-,"
morse[W]=".--,"
morse[X]="-..-,"
morse[Y]="-.--,"
morse[Z]="--..,"
morse[1]=".----,"
morse[2]="..---,"
morse[3]="...--,"
morse[4]="....-,"
morse[5]=".....,"
morse[6]="-....,"
morse[7]="--...,"
morse[8]="---..,"
morse[9]="----.,"
morse[0]="-----,"

input=$1
for (( i = 0; $i < ${#input}; i = $i + 1 ));
do
        N=${input:$i:1}

        if [ "$N" = " " ]; then
                printf "%s" SP
        else
                printf "%s" "${morse[$N]}"
        fi
done
printf "%s\n" EOT

# 18  
Old 11-29-2014
That is because you printf "SP" without a comma. In fact, it's the ${morse["I"]} following the space in input.

---------- Post updated at 19:31 ---------- Previous update was at 18:56 ----------

In fact, if you add morse[ ]="SP" to your array (as already proposed by Don Cragun), the if ... then ... fi becomes unnecessary:
Code:
for (( i = 0; $i < ${#input}; i = $i + 1 ));
        do printf "%s " "${morse[${input:$i:1}]}"
        done


Last edited by RudiC; 11-29-2014 at 02:05 PM..
This User Gave Thanks to RudiC For This Post:
# 19  
Old 11-29-2014
As an addendum...
This example only produces the number 2 at about 8 WPM through the sound system...
For this particular example SOX will be required.
Code:
#!/bin/bash
# Working idea, Barry walker, G0LCU...
# Morse.sh
# Sounder for Morse at about 8 WPM...
# Output can be used to modulate an SSB HF transceiver...
# OSX 10.7.5, default bash terminal AND SOX.
# Just as easily do cat /tmp/sample.raw > /dev/dsp for machines with /dev/dsp.
data="\\x80\\x26\\x00\\x26\\x7F\\xD9\\xFF\\xD9"
sample=0
> /tmp/dit.raw
> /tmp/dah.raw
chmod 644 /tmp/dit.raw
chmod 644 /tmp/dah.raw
for sample in {0..6}
do
        data=$data$data
done
printf "$data" >> /tmp/dit.raw
printf "$data" >> /tmp/dah.raw
printf "$data" >> /tmp/dah.raw
printf "$data" >> /tmp/dah.raw
# An example of the Morse number 2...
/Users/barrywalker/sox-14.4.0/sox -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dit.raw -d > /dev/null 2>&1
/Users/barrywalker/sox-14.4.0/sox -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dit.raw -d > /dev/null 2>&1
/Users/barrywalker/sox-14.4.0/sox -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dah.raw -d > /dev/null 2>&1
/Users/barrywalker/sox-14.4.0/sox -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dah.raw -d > /dev/null 2>&1
/Users/barrywalker/sox-14.4.0/sox -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dah.raw -d > /dev/null 2>&1

This User Gave Thanks to wisecracker For This Post:
# 20  
Old 11-30-2014
This one accepts input from a pipe or interactive stdin or with a filename as argument. See Usage:
I'm struggling with strings as arguments to the command. It throws an error if $1 is not a filename. I managed to get it to accept option "-h", but dictionary words don't fly (yet).

Code:
#!/bin/bash
#
# mors2.sh -- requires Bash 4+

usage ()
{
    echo " Usage:
    Command line mode -- no quotes needed:
        \$ `basename $0` -- Type text/code [Enter]
        ["=" key] [ctrl+C] [ctrl+D] to exit this mode
    Pipe modes:
        \$ `basename $0` [filename] [options]
        \$ echo [morse string] [text string] | `basename $0`
        \$ cat [filename] | `basename $0`

    Options:
        -h) This message
        *)"
    exit
}

declare -A alpha #Declare associative array
declare -A morse #Declare associative array
declare -u text  #Force upper case

alpha=(
 [A]='.-'     [B]='-...'     [C]='-.-.'     [D]='-..'     [E]='.'
 [F]='..-.'     [G]='--.'     [H]='....'     [I]='..'     [J]='.---'
 [K]='-.-'     [L]='.-..'     [M]='--'     [N]='-.'     [O]='---'
 [P]='.--.'     [Q]='--.-'     [R]='.-.'     [S]='...'     [T]='-'
 [U]='..-'     [V]='...-'     [W]='.--'     [X]='-..-'     [Y]='-.--'
 [Z]='--..'
 [0]='-----'     [1]='.----'     [2]='..---'     [3]='...--'     [4]='....-'
 [5]='.....'     [6]='-....'     [7]='--...'     [8]='---..'     [9]='----.'
) 

morse=(
 [.-]='A'     [-...]='B'     [-.-.]='C'     [-..]='D'     [.]='E'
 [..-.]='F'     [--.]='G'     [....]='H'     [..]='I'     [.---]='J'
 [-.-]='K'     [.-..]='L'     [--]='M'     [-.]='N'     [---]='O'
 [.--.]='P'     [--.-]='Q'     [.-.]='R'     [...]='S'     [-]='T'
 [..-]='U'     [...-]='V'     [.--]='W'     [-..-]='X'     [-.--]='Y'
 [--..]='Z'
 [-----]='0'     [.----]='1'     [..---]='2'     [...--]='3'     [....-]='4'
 [.....]='5'     [-....]='6'     [--...]='7'     [---..]='8'     [----.]='9'
)

textin ()
{
    for text in "$@";
    do
        for (( i = 0; $i < ${#text}; i = $i +1 ));
        do
            N=${text:$i:1}
            printf "$txt_fmt" "${alpha[$N]}" "$N"
        done
    done
}
 
morsein ()
{
    for code in "$@";
    do
        if [ $code == $wrd_sep ]; then
            echo 'SP'
        else
            printf "$cod_fmt" "$code" "${morse[$code]}"
        fi
    done
}

pipein ()
{
printf " %s\n\n" "#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 # Type text and/or morse code.
 # When mixing morse code and text, separate words with '+'.
 # Enter '=' to exit.
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
declare -a ary
while read line
do
    [[ $line =~ ^$xit ]] && echo "Bye" && exit
    ary=($(echo $line | tr ' ' '\n'))
    sz=${#ary[*]}
    for wrds in ${ary[*]};
    do
        I=${wrds:0:1}
        if [[ "$I" =~ ^[[:alnum:]] ]]; then
            textin "$wrds"
            [[ $sz -gt 1 || ${wrds: -1} == '.' ]] && echo 'SP'
        elif [[ $I =~ ^[-|.|$wrd_sep] ]]; then
            morsein "$wrds"
        fi
        sz=$(( $sz -1 ))
    done
    printf "%s\n\n" "EOT"

# done < "${1:-/proc/${$}/fd/0}"
done < ${1:-/dev/stdin}
echo " Bye"
}

options ()
{
    case "$@" in
        -h) usage ;;
        -*) usage ;;
    esac
}

# Start here
############
txt_fmt=" %s\t%s\n"
cod_fmt=" %s\t%s\n"
wrd_sep='+'    # char used to separate words when typing morse code
xit='='      # char to exit interactive console mode

if [[ $1 =~ ^-[[:alpha:]]$ ]]; then
    options "$1"
else
    pipein "$@"
fi
exit

# eof #


Last edited by ongoto; 12-02-2014 at 04:15 AM.. Reason: re-wrote parts to better handle 'SP'
This User Gave Thanks to ongoto For This Post:
# 21  
Old 11-30-2014
Barry, i couldnt resist and made some changes Smilie
Also, after some tries, figured, i cannot differ signs (.-) from chars (a-z) or words, without the use of some delaying sleep calls...

Code:
time morse -l "Play it again barry." | while read line; do morse-snd "$line";done
You now hear: .--.;.-..;.-;-.--;SP
You now hear: ..;-;SP
You now hear: .-;--.;.-;..;-.;SP
You now hear: -...;.-;.-.;.-.;-.--;STOP
You now hear: SP
You now hear: EOT
            
real	0m33.488s
user	0m0.220s
sys	0m0.315s

Code:
+ ~ $ morse  "Play it again barry."
.--.;.-..;.-;-.--;SP..;-;SP.-;--.;.-;..;-.;SP-...;.-;.-.;.-.;-.--;STOPSPEOT

+ ~ $ morse-snd ".--.;.-..;.-;-.--;SP..;-;SP.-;--.;.-;..;-.;SP-...;.-;.-.;.-.;-.--;STOPSPEOT"
You now hear: .--.;.-..;.-;-.--;SP..;-;SP.-;--.;.-;..;-.;SP-...;.-;.-.;.-.;-.--;STOPSPEOT
+ ~ $

[/CODE]
Code:
#!/bin/bash
# Working idea, Barry walker, G0LCU...
# Modified by Simon Arjuna Erat, sea
# Morse.sh --> morse-sox aka morse-snd
# Sounder for Morse at about 8 WPM...
# Output can be used to modulate an SSB HF transceiver...
# OSX 10.7.5, default bash terminal AND SOX.
# Just as easily do cat /tmp/sample.raw > /dev/dsp for machines with /dev/dsp.

WAIT_SIGN=0.05
WAIT_CHAR=0.5
WAIT_WORD=1.5
WAIT_SPACE=2

SOX=$(which sox||locate sox)
if [[ ! -f /tmp/dit.raw ]]
then	data="\\x80\\x26\\x00\\x26\\x7F\\xD9\\xFF\\xD9"
	sample=0
	# Create files & permission
	for F in dit dah;do
		> /tmp/$F.raw
		chmod 644 /tmp/$F.raw
	done
	# Increase data string
	for sample in {0..6} ; do data=$data$data ;done
	# Do not touch Barrys creations
	printf "$data" >> /tmp/dit.raw
	printf "$data" >> /tmp/dah.raw
	printf "$data" >> /tmp/dah.raw
	printf "$data" >> /tmp/dah.raw
fi

play_dot(){ $SOX -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dit.raw -d > /dev/null 2>&1 ; }
play_dash(){ $SOX -r 8000 -b 8 -c 1 -e unsigned-integer /tmp/dah.raw -d > /dev/null 2>&1 ; }

for input in $@;do
	printf "You now hear: " #$input"
	
	case "${input:2}" in
	"SP")	printf "SP"
		sleep $WAIT_SPACE 	;;
	"ST")	printf "STOP"
		sleep $WAIT_WORD 	;;
	*)	for (( i = 0; $i < "${#input}"; i = $i +1 ))
		do	printf "${input:$i:1}"
			case "${input:$i:1}" in
			"-")	play_dash	;;
			".")	play_dot	;;
			";")	sleep $WAIT_CHAR ;;
			esac
			sleep $WAIT_SIGN
		done
		;;
	esac
	printf "\nNew word..."
	sleep $WAIT_WORD
	printf "\r            \r"
done

Hope you like it Smilie

Last edited by sea; 11-30-2014 at 10:02 AM..
This User Gave Thanks to sea For This Post:
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Discussion started by: jcdole
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2. Shell Programming and Scripting

Associative array index question

I am trying to assign indexes to an associative array in a for loop but I have to use an eval command to make it work, this doesn't seem correct I don't have to do this with regular arrays For example, the following assignment fails without the eval command: #! /bin/bash read -d "\0" -a... (19 Replies)
Discussion started by: Riker1204
19 Replies

3. Shell Programming and Scripting

Using associative array for comparison

Hello together, i make something wrong... I want an array that contains information to associate it for further processing. Here is something from my bash... You will know, what I'm trying to do. I have to point out in advance, that the variable $SYSOS is changing and not as static as in my... (2 Replies)
Discussion started by: Decstasy
2 Replies

4. Shell Programming and Scripting

Associative Array with more than one item per entry

Hi all I have a problem where i have a large list ( up to 1000 of items) and need to have 2 items pulled from it into variables in a bash script my list is like the following and I could have it as an array or possibly an external text file maintained separately. Every line is different and... (6 Replies)
Discussion started by: kcpoole
6 Replies

5. Shell Programming and Scripting

Associative array

I have an associative array named table declare -A table table="fruit" table="veggie" table="GT" table="eminem" Now say I have a variable returning the value highway How do I find corresponding value GT ?? (this value that I find (GT in this case) is supposed to be the name of a mysql... (1 Reply)
Discussion started by: leghorn
1 Replies

6. Shell Programming and Scripting

Help needed on Associative array in awk

Hi All, I got stuck up with shell script where i use awk. The scenario which i am working on is as below. I have a file text.txt with contents COL1 COL2 COL3 COL4 1 A 500 400 1 B 500 400 1 A 500 200 2 A 290 300 2 B 290 280 3 C 100 100 I could able to sum col 3 and col4 based on... (3 Replies)
Discussion started by: imsularif
3 Replies

7. Shell Programming and Scripting

awk, associative array, compare files

i have a file like this < '393200103052';'H3G';'20081204' < '393200103059';'TIM';'20110111' < '393200103061';'TIM';'20060206' < '393200103064';'OPI';'20110623' > '393200103052';'HKG';'20081204' > '393200103056';'TIM';'20110111' > '393200103088';'TIM';'20060206' Now i have to generate a file... (9 Replies)
Discussion started by: shruthi123
9 Replies

8. Shell Programming and Scripting

Shell quiz: emulate an associative array

Most shells flavors do not have associative arrays a.k.a. maps. How would you emulate an associative array? I had this problem once and found a working solution, but I don't want to spoil the game hence I wont tell it. Wonder if anyone comes up with something better. (5 Replies)
Discussion started by: colemar
5 Replies

9. Shell Programming and Scripting

Perl: Sorting an associative array

Hi, When using sort on an associative array: foreach $key (sort(keys(%opalfabet))){ $value = $opalfabet{$key}; $result .= $value; } How does it handle double values? It seems to me that it removes them, is that true? If so, is there a way to get... (2 Replies)
Discussion started by: tine
2 Replies

10. Shell Programming and Scripting

Associative Array

Hi, I am trying to make an associative array to use in a popup_menu on a website. Here is what i have: foreach $entr ( @entries ) { $temp_uid = $entr->get_value(uid); $temp_naam = $entr->get_value(sn); $s++; } This is the popup_menu i want to use it in. popup_menu(-name=>'modcon',... (4 Replies)
Discussion started by: tine
4 Replies
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