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Is there any command in the Bourne shell?

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Top Forums Shell Programming and Scripting Is there any command in the Bourne shell?
# 1  
Old 05-05-2010
Is there any command in the Bash shell?
Hi,


The problem I have is that I want to create a list of folders whose names are read from a text file but the file names are in decimal. Each letter consists of an octet and the end of the folder name is defined by the white space character (0032)

For example, we have in the text file:
Code:
0104011101080097 0032 00970064006901110115

The folders are:
Code:
0104011101080097 -> hola
0032 -> espacio en blanco (fin de nombre de fichero)
00970064006901110115 -> adios

The problem is that I have not found any command that I converted from decimal to ASCII and I have to work in the bash shell (I can not use awk because it belongs to bash)
Does anyone know how I can do?
Last edited by zaxxon; 05-05-2010 at 07:19 AM.. Reason: use code tags please, ty
# 2  
Old 05-05-2010
I'm confused - your thread title talks about the Bourne shell, you then say you are using bash, then you cannot use awk because it is part of bash. Usually requirements like that are homework. Normally you pick the right tool, you do not limit yourself by saying 'I cannot use awk'.

Can you use perl?

And you do understand that we have a special forum for homework - which this sounds like?
# 3  
Old 05-05-2010
Small problem with the data. The second word does not spell "adios".

Code:
DEC=0097  OCT=141  CHAR=a
DEC=0064  OCT=100  CHAR=@
DEC=0069  OCT=105  CHAR=E
DEC=0111  OCT=157  CHAR=o
DEC=0115  OCT=163  CHAR=s
a@Eos

DEC=0097  OCT=141  CHAR=a
DEC=0100  OCT=144  CHAR=d
DEC=0105  OCT=151  CHAR=i
DEC=0111  OCT=157  CHAR=o
DEC=0115  OCT=163  CHAR=s
adios

I used "bc" to convert from decimal to octal then echo to display the character. Neither of these commands are in bash so there is no point in posting my code.

---------- Post updated at 15:35 ---------- Previous update was at 12:18 ----------

One way to convert from decimal to ascii in modern shell (e.g. bash). There may be better methods.

This script outputs the letter "a" by converting decimal 97 to octal 141 (which is held as 8#141) removes the "8#" prefix then outputs the character equivalent of octal 141 with "print".

Code:
typeset -i8 OCT         # Octal number
typeset -i10 DEC        # Decimal number
DEC=97
OCT=${DEC}
# ${OCT} now contains 8#octal_no
# remove 8# prefix
OCT2=${OCT##8#}
print "\0${OCT2}"

Last edited by methyl; 05-05-2010 at 08:24 AM..
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