Linux Script - 抑制日期时间中的单引号

Question

我正在学习 linux 脚本，我排练了现有的主题，请帮助。 需要帮助避免日期时间格式中的单引号正在构建最后 2 分钟的日期时间字符串，例如 -' -e 2015-02-09 11:56.*INFO -e 2015-02-09 11:55.*INFO'

当我在变量中使用字符串时，例如$X 它转换如下： -e 2015-02-09 '11:56.*INFO' -e 2015-02-09 '11:55.*INFO' 时间值前加单引号

我需要一些帮助，因为我可以将 $x 替换为： -e '2015-02-09 11:56.*INFO' -e '2015-02-09 11:55.*INFO'

下面是我的示例脚本：

#!/usr/bin/ksh -x
TEST_HOME=/home/
TEST_HOME_FILE=/home/tempop.txt
LOG_FILE=/home/testlogMin.txt


echo "test before"
grepPattern=''
cnt=1
finalGrepPattern=''
timeInMin=2
while [[ $cnt -le $timeInMin ]]; do
        echo $cnt
    date_var=`date --date="$cnt minutes ago" "+%Y-%m-%d %H:%M`
       #grepPattern=$grepPattern" -e "`date --date="$cnt minutes ago" "+%Y-%m-%d %H:%M"`".*INFO"
       #grepPattern=$grepPattern"  -e "`date --date="$cnt minutes ago" "+%Y-%m-%d %H:%M"`".*INFO"
       grepPattern="${grepPattern} -e ${date_var}"".*INFO"
       #grepPattern=$grepPattern" -e "`date --date="$cnt minutes ago" "+%Y-%m-%d %H:%M"`".*ERROR"
       #grepPattern=$grepPattern" -e "`date --date="$cnt minutes ago" "+%Y-%m-%d %H:%M"`".*WARNING"
       #grepPattern=$grepPattern" -e \""`date --date="$cnt minutes ago" "+%Y-%m-%d %H:%M"`".*INFO"\" # I changed this line
      ((cnt++))
done

finalGrepPattern=$grepPattern
echo ">>>>>>>>>>>>>>>>>>"
echo "$finalGrepPattern"
echo "*******"
echo $finalGrepPattern
echo "<<<<<<<<<<<<<<<<<"
if [ -s $LOG_FILE ]; then
        echo "File $LOG_FILE exists and its non-zero in size. Proceeding with greping last 10 mins file contents." 
    echo "$LOG_FILE"
    egrep $finalGrepPattern $LOG_FILE > $TEST_HOME/tempop.txt
    chmod 755 $TEST_HOME/tempop.txt
    echo "after egrep"
    if [ -s $TEST_HOME_FILE ]; then
        echo "$TEST_HOME_FILE is not empty. Sending  the file to XXXX server."
    fi
else
    echo "Did not find LOG_FILE GE ZERO"
fi
exit;

以下是最近运行的输出日志：

[XXXXX@ccgtestserver ~]$ ./test
+ TEST_HOME=/home/XXXXX
+ TEST_HOME_FILE=/home/XXXXX/tempop.txt
+ LOG_FILE=/home/XXXXX/testlogMin.txt
+ echo 'test before'
test before
+ grepPattern=''
+ cnt=1
+ finalGrepPattern=''
+ timeInMin=2
+ [[ 1 -le 2 ]]
+ echo 1
1
+ date '--date=1 minutes ago' '+%Y-%m-%d %H:%M'
+ date_var='2015-02-09 19:52'
+ grepPattern=' -e 2015-02-09 19:52.*INFO'
+ ((cnt++))
+ [[ 2 -le 2 ]]
+ echo 2
2
+ date '--date=2 minutes ago' '+%Y-%m-%d %H:%M'
+ date_var='2015-02-09 19:51'
+ grepPattern=' -e 2015-02-09 19:52.*INFO -e 2015-02-09 19:51.*INFO'
+ ((cnt++))
+ [[ 3 -le 2 ]]
+ finalGrepPattern=' -e 2015-02-09 19:52.*INFO -e 2015-02-09 19:51.*INFO'
+ echo '>>>>>>>>>>>>>>>>>>'
>>>>>>>>>>>>>>>>>>
+ echo ' -e 2015-02-09 19:52.*INFO -e 2015-02-09 19:51.*INFO'
 -e 2015-02-09 19:52.*INFO -e 2015-02-09 19:51.*INFO
+ echo '*******'
*******
+ echo -e 2015-02-09 '19:52.*INFO' -e 2015-02-09 '19:51.*INFO'
2015-02-09 19:52.*INFO -e 2015-02-09 19:51.*INFO
+ echo '<<<<<<<<<<<<<<<<<'
<<<<<<<<<<<<<<<<<
+ [ -s /home/XXXXX/testlogMin.txt ]
+ echo 'File /home/XXXXX/testlogMin.txt exists and its non-zero in size. Proceeding with greping last 10 mins file contents.'
File /home/XXXXX/testlogMin.txt exists and its non-zero in size. Proceeding with greping last 10 mins file contents.
+ echo /home/XXXXX/testlogMin.txt
/home/XXXXX/testlogMin.txt
+ egrep -e 2015-02-09 '19:52.*INFO' -e 2015-02-09 '19:51.*INFO' /home/XXXXX/testlogMin.txt
+ 1> /home/XXXXX/tempop.txt
egrep: 19:52.*INFO: No such file or directory
egrep: 19:51.*INFO: No such file or directory
+ chmod 755 /home/XXXXX/tempop.txt
+ echo 'after egrep'
after egrep
+ [ -s /home/XXXXX/tempop.txt ]
+ exit

Answer 1

我有一个粗略的解决方案，最好在连接日期字符串之前使用 tr 和 sed：

x="2015-02-09 '11:56.*INFO'"

x=`echo "$x" | tr -d "'" | sed "s/\([0-9].*INFO\)/'\1'/g"`

如果您同时拥有日期字符串和“-e”，请使用它，这会使解析变得困难。

Answer 2

单引号没有问题。引号仅在调试输出中添加，这是为了避免 *(asterisks) 扩展。删除 shebang 中的调试标志 -x。您不能修改调试输出：

+ echo -e 2015-02-09 '19:52.*INFO' -e 2015-02-09 '19:51.*INFO'
2015-02-09 19:52.*INFO -e 2015-02-09 19:51.*INFO

以+ 开头的行是调试输出；)

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[/]$ ksh -c "echo *"
archive bin boot cdrom dev etc hdd home initrd.img initrd.img.old lib lib64 lost+found media mnt opt proc root run sbin source srv sys tmp usr var vertica vmlinuz vmlinuz.old

[/]$ ksh -c "echo '*'"
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