菜鸟问题2

lamby

这是运行时的错误提示
[root@linux ~]# func
./func: line 12: syntax error near unexpected token `then'
./func: line 12: `then'

程序如下
#!/bin/bash
#func
char_name()
#chanr_name
#to call:char_name string
#check if $1 dose indeed contain only characters a-z,A-Z
{
#assign the argument across to new variable
_LETTERS_ONLY=$1
_LETTERS_ONLY=`echo $1|awk '{if($0~/[^a-zA-Z]/) print "1"}'`
if["$_LETTERS_ONLY" !=""]
then
  #oops error
  return 1
else
  #contains only chars
  return 0
fi
}

name_error()
#display an error message
{
echo "$@ contains errors,it must contain only letters"
}

while :
do
  echo -n "what's your first name:"
  read F_NAME
  if char_name $F_NAME
  then
    #all ok breakout
    break
  else
    name_error $F_NAME
  fi
done
感谢不厌其烦的为我解答这种菜鸟问题

r2007

原帖由 lamby 于 2006-6-13 09:50 发表
if["$_LETTERS_ONLY" !=""]

看一下置顶新手导航帖

-_-

注意两边的空格

lamby

谢谢！