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problem with I/O script


 
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# 1  
Old 01-16-2008
problem with I/O script

#!/bin/sh

cd /
while [$1 -ne " "]
do
$2>/Users/a/new
done

this is the problem it out puts

blanker.sh: line 6: [: missing `]'


any help appreciated
# 2  
Old 01-16-2008
You need white space around the brackets...
while [ $1 -ne " " ]
# 3  
Old 01-16-2008
Quote:
Originally Posted by Perderabo
You need white space around the brackets...
while [ $1 -ne " " ]
Still didn't work

while [ $1 -ne " " ]
thanks though
# 4  
Old 01-16-2008
But it got rid of the error message you complained about, right? You didn't say it wanted it to work. Smilie In that case...

while [ "$1" -ne " " ]

without the quotes, and if $1 is blank, the shell will just see...
while [ -ne " " ]
which doesn't make sense. (Actually, I missed this at first glance.)
# 5  
Old 01-16-2008
Quote:
Originally Posted by Perderabo
But it got rid of the error message you complained about, right? You didn't say it wanted it to work. Smilie In that case...

while [ "$1" -ne " " ]

without the quotes, and if $1 is blank, the shell will just see...
while [ -ne " " ]
which doesn't make sense. (Actually, I missed this at first glance.)
this is weird, it still doesn't work
i'm trying to take input and redirect output into a file, so -ne may not work but since variables are strings, i'm not really sure

here is the sttderr
line 6: [: : integer expression expected
# 6  
Old 01-16-2008
Quote:
Originally Posted by cleansing_flame
#!/bin/sh

cd /
while [$1 -ne " "]
do
$2>/Users/a/new
done

this is the problem it out puts

blanker.sh: line 6: [: missing `]'


any help appreciated
Might be that you need the string comparison operators instead of the integer comparison ones.

Code:
while [ -n $1 ]
  do
  $2>/Users/a/new
done

# 7  
Old 01-16-2008
Quote:
Originally Posted by shamrock
Might be that you need the string comparison operators instead of the integer comparison ones.

Code:
while [ -n $1 ]
  do
  $2>/Users/a/new.txt
done

i tried that, but i had to ctrl-c out, which may stop the process, but it still made the .txt file which didn't exist before

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