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hwo to solve it

hwo to solve it# Unix - 噫吁兮，危乎高哉

s*i2002-04-13 07:04

1 楼

#!/bin/sh
#counter file must be chmod 666
counter=../cgi-bin/counter
echo "Content-Type: text/html"
echo ""
read acces < $counter
acces = 'expr $acces+1'
echo $acces
echo $acces > $counter
counter is a text file which only value inside is 1.
I want to increase the value of file counter by 1 and store it back to file
counter.
when I run it in shell, it always tell me: command acces not found.
why?
thx

s*i2002-04-13 07:04

2 楼

if in bash

acces=`expr $acces + 1`
you should use back quote and if you want to set number to a variable
in this form there should be no blank before and after the '=' and there
should be space before and after the '+'

【在 s*****i 的大作中提到】

: #!/bin/sh
: #counter file must be chmod 666
: counter=../cgi-bin/counter
: echo "Content-Type: text/html"
: echo ""
: read acces < $counter
: acces = 'expr $acces+1'
: echo $acces
: echo $acces > $counter
: counter is a text file which only value inside is 1.