如何在 bash 上运行 mysql 命令？
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How to run mysql command on bash?
提问by johnatasjmo
The following code works on the command line
以下代码适用于命令行
mysql --user='myusername' --password='mypassword' --database='mydatabase' --execute='DROP DATABASE myusername;
CREATE DATABASE mydatabase;'
However, it doesnt work on bash file on excecution
但是，它在执行时不适用于 bash 文件
#!/bin/bash
user=myusername
password=mypassword
database=mydatabase
mysql --user='$user' --password='$password' --database='$database' --execute='DROP DATABASE $user; CREATE DATABASE $database;'
I receive the following error:
我收到以下错误：
ERROR 1045 (28000): Access denied for user '$user'@'localhost' (using password: YES)
错误 1045 (28000): 用户 '$user'@'localhost' 访问被拒绝（使用密码：是）
How to make the bash file run as the command line?
如何使bash文件作为命令行运行？
回答by anubhava
Use double quotes while using BASH variables.
使用 BASH 变量时使用双引号。
mysql --user="$user" --password="$password" --database="$database" --execute="DROP DATABASE $user; CREATE DATABASE $database;"
BASH doesn't expand variables in single quotes.
BASH 不会用单引号扩展变量。
回答by johnatasjmo
This one worked, double quotes when $user and $password are outside single quotes. Single quotes when inside a single quote statement.
当 $user 和 $password 在单引号之外时，这个有效，双引号。在单引号语句中使用单引号。
mysql --user="$user" --password="$password" --database="$user" --execute='DROP DATABASE '$user'; CREATE DATABASE '$user';'
回答by flopcoder
I have written a shell script which will read data from properties file and then run mysql script on shell script. sharing this may help to others.
我编写了一个 shell 脚本，它将从属性文件中读取数据，然后在 shell 脚本上运行 mysql 脚本。分享这可能对其他人有所帮助。
#!/bin/bash
PROPERTY_FILE=filename.properties
function getProperty {
PROP_KEY=
PROP_VALUE=`cat $PROPERTY_FILE | grep "$PROP_KEY" | cut -d'=' -f2`
echo $PROP_VALUE
}
echo "# Reading property from $PROPERTY_FILE"
DB_USER=$(getProperty "db.username")
DB_PASS=$(getProperty "db.password")
ROOT_LOC=$(getProperty "root.location")
echo $DB_USER
echo $DB_PASS
echo $ROOT_LOC
echo "Writing on DB ... "
mysql -u$DB_USER -p$DB_PASS dbname<<EOFMYSQL
update tablename set tablename.value_ = "$ROOT_LOC" where tablename.name_="Root directory location";
EOFMYSQL
echo "Writing root location($ROOT_LOC) is done ... "
counter=`mysql -u${DB_USER} -p${DB_PASS} dbname -e "select count(*) from tablename where tablename.name_='Root directory location' and tablename.value_ = '$ROOT_LOC';" | grep -v "count"`;
if [ "$counter" = "1" ]
then
echo "ROOT location updated"
fi
