Shell Programming and Scripting

Thanks. That got resolved. I noticed another issue with while loop

Code:

 
    while read -r line1
         do
                 echo $line1 > $wrkdir/datatemp

for \01 in $line1 , ^A is written in the output . \02 is ^B, \03 is ^C and so on
eg. abc\main\02Run is written as abc\main^BRun in the $wrkdir/datatemp file.
Can anyone explain that why or how to resolve?

Moderator's Comments:

Use code tags, please

what is your input file and how about contents?

Dear ygemici,

Code:

if [ -s "$wrkdir/temp.$i" ]
        then
         while read -r line1
         do
                 echo $line1 > $wrkdir/datatemp
         done < $wrkdir/temp.$i
fi

content in temp.$i files is of following type :
A_DBOARD\MAIN\02RUN\RUNSURE_EEE
A_DBOARD\MAIN\03RUN\RUNSURE_EEE
....
Which is written in output file datatemp as
A_DBOARD\MAIN^BRUN\RUNSURE_EEE
A_DBOARD\MAIN^CRUN\RUNSURE_EEE
....

Which is your OS?... If solaris, try using print -r $line1 >$wrkdir/datatemp instead of echo...
The above code works fine for me in Linux

--ahamed

what is output after this.

Code:

$ od -c $wrkdir/temp.$i

Thanks Ahamed, print -r worked fine for me.
uname -rs gave the version as
AIX 3

ygemici, the output of od -c is of the type :

Code:

0000220    P   ,       s   e   r   v   e   r       j   o   b  \n        
0000240    C   A   M   P   A   G   N   E 002   R   U   N   \   R   U   N
0000260    E   X   T   R   C   A   M   P   A   G   N   E   ,       s   e
0000300    q   u   e   n   c   e       j   o   b  \n                   C           
:
:
0000500    T   \   E   X   T   R   A   C   T   S   S   R   C   ,       s
0000520    e   r   v   e   r       j   o   b  \n           C   A   M   P
0000540    A   G   N   E 002   R   U   N   \   M   R   U   N   C   A   M
0000560    P   A   G   N   E   ,       s   e   q   u   e   n   c   e

Where ever there is 002 is where the 02 is replaced by ^B in the output file.

Thanks for your input.

i think,this character of seqs is interpreted as "Start of text(^B)" from your shell.
it(probably your ksh) reads "\ and 02" and "02" is equal "002" in octal.
so "002" chars is now like ^B (STX). and there is a backslash in front of its.
then this equal to "\^B".. \^B is a control character is predefined for specify "Start of text(^B)" on your terminal device interface
(like putty,securecrt,different ssh clients and really terms) and
actually these are defined in termcap, terminfo and curses(for ex python use this) and
as VT100+,VT102,VT125.Vt400,XtermXX as some standarts (like ANSI standard XXXXX) and
shells use these loads of this meanings to char sets (such as ASCII cntrol character sets [C0,C1,G0,G1..within the ranges-> 000 to 037 and 200 to 237 octal,and it varies to different character sets)

you can view some cchars for your term.

Code:

# stty -a

actually you can use echo "-E" but ksh does not support that..
as ahamed said,"print -r" is good way for prints their literal value while use read -r in ksh and ksh derivatives.

regards
ygemici