Question

目标：我试图设置VVV，我打算默认在特定数据库上运行数据库备份。

我被困的地方：即使我在bash脚本中使用换行符，我仍然会收到syntax error near unexpected token `done'。

采取的步骤：我也确保我在两个bash脚本中都有LF行结尾，但我得到了同样的错误。

文件： vagrant_halt_custom

#!/bin/bash
#
# This script is run whenever `vagrant halt` is used to power off
# the virtual machine. To customize this behavior, include a file
# in your local VVV/config/homebin directory: vagrant_halt_custom
#
# Look for a custom trigger file. If this exists, we'll assume that
# all trigger actions should be handled by this custom script. If
# it does not exist, then we'll handle some basic tasks.
db_backup_custom

文件： db_backup_custom

#!/bin/bash
#
# Create individual SQL files for each database. These files
# are imported automatically during an initial provision if
# the databases exist per the import-sql.sh process.
mysql -e 'show databases' | \
grep -v -F "information_schema" | \
grep -v -F "performance_schema" | \
grep -v -F "mysql" | \
grep -v -F "test" | \
grep -v -F "Database" | \
while read dbname; do if [ "$dbname" == "mydb" ]; then echo "Database $dbname skipped." && continue fi; mysqldump -uroot "$dbname" > /srv/database/backups/"$dbnme".sql && echo "Database $dbname backed up..."; done

错误

==> default: Running triggers before halt...
/home/vagrant/bin/db_backup_custom: line 12: syntax error near unexpected token `done'
/home/vagrant/bin/db_backup_custom: line 12: `while read dbname; do if [ "$dbname" == "mydb" ]; then echo "Database $dbname skipped." && continue fi; mysqldump -uroot "$dbname" > /srv/database/backups/"$dbnme".sql && echo "Database $dbname backed up..."; done'
Connection to 127.0.0.1 closed.
==> default: Attempting graceful shutdown of VM...
==> default: [vagrant-hostsupdater] Removing hosts

Answer 1

经过多次试验和错误，我得到了以下答案。

文件： db_backup_custom

#!/bin/bash
#
# Create individual SQL files for each database. These files
# are imported automatically during an initial provision if
# the databases exist per the import-sql.sh process.
mysql -e 'show databases' | \
grep -v -F "information_schema" | \
grep -v -F "performance_schema" | \
grep -v -F "mysql" | \
grep -v -F "test" | \
grep -v -F "Database" | \
while read dbname; do
    if [ "$dbname" == "mydb" ] ; then
        echo "Database $dbname skipped." \
            && continue;
    fi
    mysqldump -uroot "$dbname" > /srv/database/backups/"$dbnme".sql &&
        echo "Database $dbname backed up..."; done;

提示：使用以下命令验证bash脚本是否存在语法错误。

bash -n bin/db_backup_custom

Bash：无法解决意外的令牌语法错误

1 个答案: