Question

我编写了以下脚本来检查我的服务器：

#!/bin/bash

rm -f /tmp/res-ok.txt     1>/dev/null 2>/dev/null
rm -f /tmp/res-failed.txt 1>/dev/null 2>/dev/null

echo "***********************************************"
echo "*+++++++++++++++++++++++++++++++++++++++++++++*"
echo "*+                                           +*"
echo "*+      PINGING SERVERS: Is UP OR DOWN       +*"
echo "*+                                           +*"
echo "*+++++++++++++++++++++++++++++++++++++++++++++*"
echo "***********************************************"

echo " ================                 ============ "
echo "|   IP ADDRESS   |               |   STATUS   |"
echo " ================                 ============ "

while read ip; do
    ping $ip -s 1 -c 1 1>/dev/null 2>&1
    if [ $? -eq 0 ]; then
        echo "  $ip                      UP"
        echo $ip >> /tmp/res-ok.txt
    elif [ $? -ne 0 ]; then
        echo "  $ip                      DOWN"
        echo $ip >> /tmp/res-failed.txt
    fi
echo "-----------------------------------------------"

done <<____HERE

____HERE

ok=`wc -l /tmp/res-ok.txt | awk '{sum += $1} END {print sum}'`
failed=`wc -l /tmp/res-failed.txt | awk '{sum += $1} END {print sum}'`

echo You have $ok servers UP
echo You have $failed servers DOWN

如何告诉我的脚本在特定位置显示STATUS column [第二列]？[确切] 我想我应该控制游标。如何？任何的想法？谢谢

Answer 1

如果我正确理解您的问题，您的布局会被破坏，因为您有不同长度的IP地址。根据它们的不同程度，您可以通过使用制表符而不仅仅是空白来获得更合适的布局：

echo -e "  $ip\t\t\t\tDOWN"

...或通过列：

输出您的输出

output="$output `echo -e "\n$ip UP"`"
...
## Outputting your output:
echo -e "$output" | column -t

结果：

172.16.2.4        UP
172.16.2.5        UP
192.168.178.200   UP
192.168.178.254   UP

为了使后者看起来很完美，您可能需要将welcome-header的宽度调整为输出的最终宽度。

您还可以通过添加分隔符在字段之间添加更多空白列：

output="$output `echo -e "\n$ip  - UP"`"

结果：

172.16.2.4       -   UP
172.16.2.5       -   UP
192.168.178.200  -   UP
192.168.178.254  -   UP
192.168.178.254  -   UP

因此，在这些更改后，您的脚本应如下所示：

#!/bin/bash

rm -f /tmp/res-ok.txt     1>/dev/null 2>/dev/null
rm -f /tmp/res-failed.txt 1>/dev/null 2>/dev/null

echo "***********************************************"
echo "*+++++++++++++++++++++++++++++++++++++++++++++*"
echo "*+                                           +*"
echo "*+      PINGING SERVERS: Is UP OR DOWN       +*"
echo "*+                                           +*"
echo "*+++++++++++++++++++++++++++++++++++++++++++++*"
echo "***********************************************"

echo " =============          ============ "
echo "| IP ADDRESS  |        |   STATUS   |"
echo " =============          ============ "

output=""    ## Unset the variable, in case it still contains anything.

while read ip; do
    ping $ip -s 1 -c 1 1>/dev/null 2>&1
    if [ $? -eq 0 ]; then
        output="$output `echo "\n$ip - UP"`"
        echo $ip >> /tmp/res-ok.txt
    elif [ $? -ne 0 ]; then
        output="$output `echo "\n$ip - DOWN"`"
        echo $ip >> /tmp/res-failed.txt
    fi
echo "-----------------------------------------------"

done <<____HERE

____HERE

echo -e "$output" | column -t

ok=`wc -l /tmp/res-ok.txt | awk '{sum += $1} END {print sum}'`
failed=`wc -l /tmp/res-failed.txt | awk '{sum += $1} END {print sum}'`

echo You have $ok servers UP
echo You have $failed servers DOWN

Answer 2

最终答案：

#!/bin/bash

if [ $# -ne 1 ]; then
    echo "USAGE: ./server-status.sh <ip-list>"
    exit 1
fi

rm -f /tmp/whole.txt      1>/dev/null 2>/dev/null
rm -f /tmp/res-ok.txt     1>/dev/null 2>/dev/null
rm -f /tmp/res-failed.txt 1>/dev/null 2>/dev/null

echo "***********************************************"
echo "*+++++++++++++++++++++++++++++++++++++++++++++*"
echo "*+                                           +*"
echo "*+      PINGING SERVERS: Is UP OR DOWN       +*"
echo "*+                                           +*"
echo "*+++++++++++++++++++++++++++++++++++++++++++++*"
echo "***********************************************"

echo " ================                 ============ "
echo "|   IP ADDRESS   |               |   STATUS   |"
echo " ================                 ============ "

output=""
while read ip; do
    ping $ip -s 1 -c 1 -W 1 1>/dev/null 2>&1
    if [ $? -eq 0 ]; then
    output="$output `echo "\n$ip -------------------- UP"`"
        echo $ip >> /tmp/res-ok.txt
    elif [ $? -ne 0 ]; then
    output="$output `echo "\n$ip -------------------- DOWN"`"
        echo $ip >> /tmp/res-failed.txt
    fi
done < $1

echo -e "$output" | column -t

cat /tmp/res-ok.txt >> /tmp/whole.txt
cat /tmp/res-failed.txt >> /tmp/whole.txt

total=`wc -l /tmp/whole.txt | awk '{sum += $1} END {print sum}'`
ok=`wc -l /tmp/res-ok.txt | awk '{sum += $1} END {print sum}'`
failed=`wc -l /tmp/res-failed.txt | awk '{sum += $1} END {print sum}'`

echo "UP:    $ok"
echo "DOWN:  $failed"
echo "TOTAL: $total"

在bash脚本中控制游标

2 个答案: