我们需要报告写入7天周期的日志文件的行数。日志文件的名称为-今天的[filename].log.1.gz
,昨天的[filename].log.2.gz
,直到第七天的[filename].log.7.gz
我希望创建一个可立即输出数字的脚本,而不是针对每一行运行zcat [filename].log.1.gz | wc -l
命令。我还希望针对每个输出值发出有意义的消息
我可以编写一个bash脚本,因为文件名相同,所以每行都会执行一次,但是我希望有一些更优雅的方法
代替这个
zcat position.log.3.gz | wc -l
zcat position.log.4.gz | wc -l
zcat position.log.5.gz | wc -l
zcat position.log.6.gz | wc -l
zcat position.log.7.gz | wc -l
我希望有更多类似的东西
for i in {1..7}
c=$(zcat position.log.$i.gz | wc -l)
message=$"The count for "
date1=$(date --date='$i days ago')
result=$"$message$date1$c"
echo $result
done
但是,我无法运行它。
有什么想法吗?
答案 0 :(得分:0)
您编写了一些小修正的脚本:
<?php
$x = (rand(1,10));
$y = (rand(1,10));
$sum = $x + $y;
if (isset($_POST['submit'])) {
$guess = $_POST['guess'];
$value = $_POST['sum'];
if ($value == $guess) {
echo "nice, you got it right.";
} else {
echo "aw, too bad. <br>";
}
}
echo "<br>What is " . $x . " + " . $y . "? <br>";
?>
<form action="" method="post">
<input name="guess" type="text" />
<input type="hidden" name="sum" value="<?=$sum?>" />
<input name="submit" type="submit" />
</form>
或者更短一点:
# for loop starts with a 'do'
for i in {1..7}; do
# indentation makes everything redable
# always quote your variables
c=$(zcat "position.log.$i.gz" | wc -l)
# The "" is just a string, no '$' sign before it
message="The count for "
# The '$i' is literally `$i`, if you want to _expand_ a variable, you have to use "$i"
date1=$(date --date="$i days ago")
# same as above, drop the $
result="$message$date1$c"
# always quote your variables
echo "$result"
done