maemo.org - Talk - bad for loop variable

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- - bad for loop variable (https://talk.maemo.org/showthread.php?t=38233)

pulketo

2009-12-23 17:27

bad for loop variable [solved]

hello, busybox 'for' command is not working as it does on common distributions.

it says:
line 1: syntax error: Bad for loop variable
is there a special way to work with for variables in maemo??
my script run well on ubuntu

the for scripts is:
formpl:

for ((i=1;i<=$1;i++)) do mpl mp3 $i;done

mpl command works well ;)

thanks

Matan

2009-12-23 17:33

Re: bad for loop variable

This is not a bourne shell construct. If you want to use bash, install the bash package.

Or try something like for i in `seq 1 7` ; do ...

wnd	2009-12-29 00:05

Re: bad for loop variable

Backticks are obsolete, and problematic when nested. Modern Bourne shells, BusyBox included, undestand $()-notation.

Code:

for i in $(seq $n); do mpl mp3 $i;done

If $n is very large, then while-loop may be needed to avoid exceeding command line length limitation.

Code:

i=1

while test $i -le 100000; do

        mpl mp3 $i

        i=$(( $i + 1 ))

done

Sayantan

2010-07-16 10:16

Re: bad for loop variable

A solution::

#cat loop.sh
for ((i=1; i<=5; i++))
do
echo "welcome $i times"
done

# chmod 777 loop.sh
#./loop.sh

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