Chinaunix
标题:
判断变量是全数字
[打印本页]
作者:
long_ming
时间:
2009-10-12 23:46
标题:
判断变量是全数字
test_num.sh
#!/bin/sh
file_size=128
input_num="$(echo "$1" | sed -n "/^[0-9]\+$/p")"
if [ -n "$input_num" ];then
echo "Input is the number!"
file_size="$1"
echo "file_size = $file_size"
else
echo "Input isn't the number!"
echo "Use defaule size $file_size."
fi
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