Question

我正在尝试在BASH中编写脚本，但我遇到了问题。我是脚本新手，所以我打赌有一些愚蠢的错误。

当我尝试运行脚本时 - 我收到错误：

gawk: line:4: while (cmd | readline | {
gawk: line:4:              ^ syntax error
gawk: line:11: while (cmd | readline | {
gawk: line:11:              ^ syntax error

有谁知道我该如何解决？我究竟做错了什么？对不起我的英语，如果不清楚的话 - 我会尝试解释。

#!/bin/bash

# Description: Script which stores required informations about databases.

# ALGORITHM
# 1. We charge informations from database about known databases (defined in the database system.know_databases).
# 2. We charge informations about actually existing databases.
# 3. We compare the actual values of the declared and print out a message when size of database is too big or there is no declared informations.

cd /var/lib/mysql || exit 1

gawk '
BEGIN {
   # login and password declared in .my.cnf
   cmd = "mysql -e \"SELECT name, volume, date, description FROM test.database\""
   while ( cmd | readline ) {
      DATABASE[$1,1] = $2;
      DATABASE[$1,2] = $3;
   }
   close(cmd)

   cmd = "find /var/lib/mysql/ -type d -maxdepth 1 -mindepth 1 | xargs du -sm"
   while ( cmd | readline ) {
      VOL = $1;
      NAM = $2;
      if ( ! DATABASE[NAM,1] ) {
         print "There is no declared informations about " NAM " in table test.database"
      continue
      }
      if ( VOL > DATABASE[NAM,1] ) {
         print "Database " NAM " have too big actual size (" VOL "), it exceeds declared sizey in table test.database"
     continue
      }
   }
   close(cmd)
}
" /dev/null

BASH：GAWK - 语法错误，代码有什么问题？

0 个答案: