[SOLVED] Bash: How to increment an alphabetic value of a variable alphabetically?

jdkaye · 12-19-2014, 02:32 PM

It took a while but thanks you all of you I got it.

Code:

#!/bin/bash
j=1
LEFT="http://xxx.xxxxx.xxx/languages-pronunciations/de/alphabetically/"
HEX="\x"
NUM=65
while [ $j -le 10 ]; do
printf %x $NUM | cat > hexnum
hexnum=`cat hexnum`
LETTER=$HEX$hexnum
echo "Num= " $NUM " " $hexnum
echo -e "$LETTER" | cat
RIGHT="/page-1/"
URL="$LEFT$LETTER$RIGHT"
echo -e "$URL" | cat > url.txt
i=`cat url.txt`
echo $i
((NUM++))
((j++))
done

Here's the output

Code:

~$ test4
Num=  65   41
A
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/A/page-1/
Num=  66   42
B
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/B/page-1/
Num=  67   43
C
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/C/page-1/
Num=  68   44
D
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/D/page-1/
Num=  69   45
E
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/E/page-1/
Num=  70   46
F
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/F/page-1/
Num=  71   47
G
http://www.xxxx.xxx/languages-pronunciations/de/alphabetically/G/page-1/
Num=  72   48
H
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/H/page-1/
Num=  73   49
I
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/I/page-1/
Num=  74   4a
J
http://www.xxxxx.xxx/languages-pronunciations/de/alphabetically/J/page-1/

There's extra code and output that is there just for debugging purposes. It will be removed in the final version. I just did a run of 10 url's but it will now do what I want; they way I want.
Thanks to all for your kind assistance.
jdk

pysatdp · 06-15-2018, 02:38 PM

Hello there,
I am a newbie to this forum.

I would like to get some help here. I have .ksh script and my script will read from a configuration table to echo the value. The configuration table will have one value such as X001, and the expectation from me is to return incremental values such as X001, X002, X003, X004, X005, X006 etc. how could I achieve this in my .ksh script? Any help please?

for example:

cat ${DataDir}/file.txt | while read a ;
do
echo "seq_num :$a";
#### I need to return incremental value for the seq_num because there are more than 1 file that gets generated later
#### and I need to add the incremental seq_num to each of those files that gets generated.
export SEQ_NUM=$a
done

scasey · 06-15-2018, 03:30 PM

First, you should open a new thread instead of activating a 4-year old one.
Second, please show us what you have tried, and why it's not working for you.