什么是该KSH变量接受的最大字符数？ [英] What is the maximum number of characters that the ksh variable accepts?

问题描述

我试图加载和分析一个真正的大文本文件。虽然装载是没有问题的，但存在具有在一行2908778字符特定行。

I am trying to load and parse a really large text file. Although the loading is not a problem, but there are particular lines that have 2908778 characters on a single line.

这是我的脚本导致错误。

This is causing an error in my script.

在下面的脚本，我删除了所有的逻辑和刚刚直读线。
我也删除所有有效线路和刚刚离开一个文本文件中的很长的线。在运行时我得到以下错误：

On the script below, I removed all logic and just got straight to read line. I also removed all valid lines and just left the really long line in one text file. When running I get the below error :

$ dowhiledebug.sh dump.txt
dowhiledebug.sh[6]: no space
Script Ended dump.txt

实际的脚本：

 #!/bin/sh
 filename=$1
 count=1
 if [ -f ${filename} ]; then
    echo "after then"
    while read line;
            do
            echo "$count"
            count=$((count+1))
            done < $filename
 else
    echo "Could not open file $filename"
 fi
 echo "Script Ended $filename"

更新（2013年1月17日）

Updated (2013-01-17)

跟进的问题：<一href=\"http://stackoverflow.com/questions/14387344/is-it-possible-to-increase-the-maximum-number-of-characters-that-ksh-variable-ac\">Is有可能以增加的ksh可变接受？的最大字符数

推荐答案

任何外壳的限制是C命令行最大的极限。这里有一个小程序，把信息从 /usr/include/limits.h 的你：

The limit for any shell is the limit of the C command line maximum. Here's a little program that pulls the information out of /usr/include/limits.h for you:

cpp <<HERE | tail -1
#include <limits.h>
ARG_MAX
HERE

煤矿给我（256 * 1024）或262144字符。

Mine gives me (256 * 1024) or 262144 characters.

如果未安装C编译器不工作，但它可能是一个类似的限制。

Doesn't work if the C compiler isn't installed, but it's probably a similar limit.

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