在 Bash 脚本中将字符串作为命令运行
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Run a string as a command within a Bash script
提问by Jo?o Portela
I have a Bash script that builds a string to run as a command
我有一个 Bash 脚本，它构建一个字符串作为命令运行
Script:
脚本：
#! /bin/bash
matchdir="/home/joao/robocup/runner_workdir/matches/testmatch/"
teamAComm="`pwd`/a.sh"
teamBComm="`pwd`/b.sh"
include="`pwd`/server_official.conf"
serverbin='/usr/local/bin/rcssserver'
cd $matchdir
illcommando="$serverbin include='$include' server::team_l_start = '${teamAComm}' server::team_r_start = '${teamBComm}' CSVSaver::save='true' CSVSaver::filename = 'out.csv'"
echo "running: $illcommando"
# $illcommando > server-output.log 2> server-error.log
$illcommando
which does not seem to supply the arguments correctly to the $serverbin.
这似乎没有正确地向$serverbin.
Script output:
脚本输出：
running: /usr/local/bin/rcssserver include='/home/joao/robocup/runner_workdir/server_official.conf' server::team_l_start = '/home/joao/robocup/runner_workdir/a.sh' server::team_r_start = '/home/joao/robocup/runner_workdir/b.sh' CSVSaver::save='true' CSVSaver::filename = 'out.csv'
rcssserver-14.0.1
Copyright (C) 1995, 1996, 1997, 1998, 1999 Electrotechnical Laboratory.
2000 - 2009 RoboCup Soccer Simulator Maintenance Group.
Usage: /usr/local/bin/rcssserver [[-[-]]namespace::option=value]
[[-[-]][namespace::]help]
[[-[-]]include=file]
Options:
help
display generic help
include=file
parse the specified configuration file. Configuration files
have the same format as the command line options. The
configuration file specified will be parsed before all
subsequent options.
server::help
display detailed help for the "server" module
player::help
display detailed help for the "player" module
CSVSaver::help
display detailed help for the "CSVSaver" module
CSVSaver Options:
CSVSaver::save=<on|off|true|false|1|0|>
If save is on/true, then the saver will attempt to save the
results to the database. Otherwise it will do nothing.
current value: false
CSVSaver::filename='<STRING>'
The file to save the results to. If this file does not
exist it will be created. If the file does exist, the results
will be appended to the end.
current value: 'out.csv'
if I just paste the command /usr/local/bin/rcssserver include='/home/joao/robocup/runner_workdir/server_official.conf' server::team_l_start = '/home/joao/robocup/runner_workdir/a.sh' server::team_r_start = '/home/joao/robocup/runner_workdir/b.sh' CSVSaver::save='true' CSVSaver::filename = 'out.csv'(in the output after "runnning: ") it works fine.
如果我只是粘贴命令/usr/local/bin/rcssserver include='/home/joao/robocup/runner_workdir/server_official.conf' server::team_l_start = '/home/joao/robocup/runner_workdir/a.sh' server::team_r_start = '/home/joao/robocup/runner_workdir/b.sh' CSVSaver::save='true' CSVSaver::filename = 'out.csv'（在“runnning:”之后的输出中）它工作正常。
回答by Arne Burmeister
You can use evalto execute a string:
您可以使用eval来执行一个字符串：
eval $illcommando
回答by Ola
I usually place commands in parentheses $(commandStr), if that doesn't help I find bash debug mode great, run the script as bash -x script
我通常将命令放在括号中$(commandStr)，如果这对我发现 bash 调试模式没有帮助，请按以下方式运行脚本bash -x script
回答by Takman
your_command_string="..."
output=$(eval "$your_command_string")
echo "$output"
回答by ghostdog74
don't put your commands in variables, just run it
不要将您的命令放在变量中，只需运行它
matchdir="/home/joao/robocup/runner_workdir/matches/testmatch/"
PWD=$(pwd)
teamAComm="$PWD/a.sh"
teamBComm="$PWD/b.sh"
include="$PWD/server_official.conf"
serverbin='/usr/local/bin/rcssserver'
cd $matchdir
$serverbin include=$include server::team_l_start = ${teamAComm} server::team_r_start=${teamBComm} CSVSaver::save='true' CSVSaver::filename = 'out.csv'
回答by cmyster
./me casts raise_dead()
./me 施放 raise_dead()
I was looking for something like this, but I also needed to reuse the same string minus two parameters so I ended up with something like:
我正在寻找这样的东西，但我还需要重用相同的字符串减去两个参数，所以我最终得到了类似的东西：
my_exe ()
{
mysql -sN -e "select from heat.stack where heat.stack.name=\"\";"
}
This is something I use to monitor openstack heat stack creation. In this case I expect two conditions, an action 'CREATE' and a status 'COMPLETE' on a stack named "Somestack"
这是我用来监控 openstack 热堆栈创建的东西。在这种情况下，我希望有两个条件，一个名为“Somestack”的堆栈上的操作“CREATE”和状态“COMPLETE”
To get those variables I can do something like:
要获得这些变量，我可以执行以下操作：
ACTION=$(my_exe action Somestack)
STATUS=$(my_exe status Somestack)
if [[ "$ACTION" == "CREATE" ]] && [[ "$STATUS" == "COMPLETE" ]]
...
回答by J.M.I. MADISON
Here is my gradle build script that executes strings stored in heredocs:
这里是我的gradle这个构建脚本存储在执行字符串here文档：
current_directory=$( realpath "." )
GENERATED=${current_directory}/"GENERATED"
build_gradle=$( realpath build.gradle )
## touch because .gitignore ignores this folder:
touch $GENERATED
COPY_BUILD_FILE=$( cat <<COPY_BUILD_FILE_HEREDOC
cp
$build_gradle
$GENERATED/build.gradle
COPY_BUILD_FILE_HEREDOC
)
$COPY_BUILD_FILE
GRADLE_COMMAND=$( cat <<GRADLE_COMMAND_HEREDOC
gradle run
--build-file
$GENERATED/build.gradle
--gradle-user-home
$GENERATED
--no-daemon
GRADLE_COMMAND_HEREDOC
)
$GRADLE_COMMAND
The lone ")" are kind of ugly. But I have no clue how to fix that asthetic aspect.
孤独的“）”有点丑。但我不知道如何解决审美方面的问题。
