Visit Our UNIX and Linux User Community


works step by step on command line but not in script


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting works step by step on command line but not in script
# 1  
Old 12-06-2007
works step by step on command line but not in script

Hi all,
The following script is fine when I work via command line

HTML Code:
m=1
c=0
while [ $c = 0 ]
do
echo $m
gnokii --getsms IN $m > out.txt;
m=`expr $m + 1`;
cat out.txt >> message_log;
############
read first crap< <(sed -n '/Text:/{n;p;}' out.txt);
read message< <(sed -n '/Text:/{n;p;}' out.txt);
if [ $first != "02" ]; then
cat out.txt
fi
#############
SIZE=`wc -c out.txt | tr -d ' out.txt'`
if [ $SIZE == 0 ]; then 
echo 'time to exit';
c=`expr $c + 1`;
fi  
done
but when run via a shell script I get the error message:

HTML Code:
/usr/local/bin/mc_smsread.sh: line 18: syntax error near unexpected token `<'
/usr/local/bin/mc_smsread.sh: line 18: `read first crap< <(sed -n '/Text:/{n;p;}' out.txt);'
Why does it work on command line but not within the loop?

Here is an example out.txt file that is written and used:

HTML Code:
1. Inbox Message (read)
Date/time: 30/11/2007 18:17:03 
Sender: O2-UK Msg Center: +447802000332
Text:
O2 Rewards: Get rewarded with 10% back on all your top-ups - simply text REWARD to 50202 free to join. Call 313 opt. 4 free for info & terms. Stop SMS call 2220
Any help gratefully received,

Adam
# 2  
Old 12-06-2007
I believe you need the script to be executed by a shell
that supports process substitution
(I suppose you're using such shell when you're executing it manually).

Try making the first line like this:

Code:
#!/path/to/bash

ksh93 and zsh supports that syntax also.
# 3  
Old 12-06-2007
perfect

perfect thank you

Previous Thread | Next Thread
Test Your Knowledge in Computers #132
Difficulty: Easy
Many of the command line and graphical utilities in a Linux distro are very similar to a Unix system.
True or False?

7 More Discussions You Might Find Interesting

1. What is on Your Mind?

Slowly Removing Bold Font Style - Step-by-Step

FYI, I'm slowly removing a lot of the bold font-styles from titles of discussions, forum titles, etc I'm not removing bold for the entire site because we do need bold from time to time, especially in posts and sometimes in other places. However, the original forum style had way too much... (3 Replies)
Discussion started by: Neo
3 Replies

2. Solaris

step step apache2 configuration doc

Hi Guys, does anyone know of a step by step guide on how configure apache2 web server in solaris 10? I will really appreciate it. Thanks a lot (1 Reply)
Discussion started by: cjashu
1 Replies

3. UNIX for Advanced & Expert Users

Test shell script step by step?

Hi to all, I don't know if someone has done sometime a MS Excel Macro, that allows us to press F8 over the code to see step by step, to mention something, how is running the code, which values take the variables, if some loop is executing correct or where a error occurs, and some other... (7 Replies)
Discussion started by: Ophiuchus
7 Replies

4. Linux

May you explain step by step where and how I will add pseudo code

Thank all of you. May you explain step by step where and how I will add pseudo code Note : I have Linux 2.6.24-26-server on x86_64 dears kindly help me (3 Replies)
Discussion started by: nonowa
3 Replies

5. UNIX for Dummies Questions & Answers

looking for step by step emacs c++ debug tutorial

Hello all i was searching the net for simple but effective tutorial to show me how debug c++ in emacs with not much luck. im not new to unix but new to emacs , i looking for tutorial that shows how to debug ( if possible ) c++ programs . LIike IDE suppose to , break points step in/out variable... (0 Replies)
Discussion started by: umen
0 Replies

6. UNIX for Dummies Questions & Answers

Step by step Installation of Unix SCO 2.1

I am new to unix and server at my job crashed due to hardware problem. I'm now opted to install sco unix on a new server - could anybody help me with the steps I need to take (pretty old machine) Thanks & Regards Nancy :( (0 Replies)
Discussion started by: nensee7
0 Replies

7. UNIX for Dummies Questions & Answers

install of sco unix step by step

HI I am new to unix and need to install sco unix on a new server - could anybody help me with the steps I need to take - the hd is a 9gb scsi drive (pretty old machine) Thanks (1 Reply)
Discussion started by: porikamu
1 Replies

Featured Tech Videos