我在Linux中使用了以下简单的ksh脚本
#!/bin/ksh
set -x
### Process list of *.dat files
if [ -f *.dat ]
then
print "about to process"
else
print "no file to process"
fi
我当前目录中有以下* .dat文件:
S3ASBN.1708140015551.dat S3ASBN.1708140015552.dat S3ASBN.1708140015561.dat S3HDR.dat
运行文件命令显示以下内容:
file *.dat
S3ASBN.1708140015551.dat: ASCII text
S3ASBN.1708140015552.dat: ASCII text
S3ASBN.1708140015561.dat: ASCII text
S3HDR.dat: ASCII text
但是,当我运行ksh脚本时,它会显示以下内容:
./test
+ [ -f S3ASBN.1708140015551.dat S3ASBN.1708140015552.dat S3ASBN.1708140015561.dat S3HDR.dat ]
./test[9]: [: S3ASBN.1708140015552.dat: unexpected operator/operand
+ print no file to process
no file to process
任何线索我为什么会得到unexpected operator/operand
以及有什么补救措施?
答案 0 :(得分:1)
您的if语句不正确:您正在测试* .dat是否为文件
问题是:*.dat
有一个globbing运算符*
,它使用.dat
创建每个项目endig的列表。
此测试仅运行一次,而您有多个文件,因此可以运行多个测试。
尝试添加循环:
#! /usr/bin/ksh
set -x
### Process list of *.dat files
for file in *.dat
do
if [ -f $file ]
then
print "about to process"
else
print "no file to process"
fi
done
就我而言:
$> ls *.dat
53.dat fds.dat ko.dat tfd.dat
输出:
$> ./tutu.sh
+ [ -f 53.dat ]
+ print 'about to process'
about to process
+ [ -f fds.dat ]
+ print 'about to process'
about to process
+ [ -f ko.dat ]
+ print 'about to process'
about to process
+ [ -f tfd.dat ]
+ print 'about to process'
about to process