Unix判断一个文件是否为空
Unix determine if a file is empty
我正在尝试制作一个脚本来检查文件中是否有任何 tyext。我开发了以下脚本。我已经让它检查是否正好有 2 个参数,看看文件是否存在,但我无法检查文件中的文本。代码如下:
#!/bin/ksh
#check if number of arguments are 2
if [ $# -ne 2 ]; then
echo "Does not equal two arguments"
echo "Usage [=10=] inputfile outputfile"
exit 1
fi
#check if input file exists
if [ ! -f ]; then
echo " not found!"
exit 1
fi
#Check if input file is null
#This next block of code is where the issue is
if [ grep -q -eq 0 ]; then
echo " must have text within the file"
exit 1
fi
如有任何帮助,我们将不胜感激
尝试使用统计
stat -c %s 文件名
test 的“-s”选项检查文件是否为空——参见 manual。所以你的最后一块会变成
#Check if input file is null
#This next block of code is where the issue is
if [ ! -s ]; then
echo " must have text within the file"
exit 1
fi
我正在尝试制作一个脚本来检查文件中是否有任何 tyext。我开发了以下脚本。我已经让它检查是否正好有 2 个参数,看看文件是否存在,但我无法检查文件中的文本。代码如下:
#!/bin/ksh
#check if number of arguments are 2
if [ $# -ne 2 ]; then
echo "Does not equal two arguments"
echo "Usage [=10=] inputfile outputfile"
exit 1
fi
#check if input file exists
if [ ! -f ]; then
echo " not found!"
exit 1
fi
#Check if input file is null
#This next block of code is where the issue is
if [ grep -q -eq 0 ]; then
echo " must have text within the file"
exit 1
fi
如有任何帮助,我们将不胜感激
尝试使用统计
stat -c %s 文件名
test 的“-s”选项检查文件是否为空——参见 manual。所以你的最后一块会变成
#Check if input file is null
#This next block of code is where the issue is
if [ ! -s ]; then
echo " must have text within the file"
exit 1
fi