You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@groovy.apache.org by Chris Fouts <ch...@ziftsolutions.com> on 2018/05/30 17:57:21 UTC
Running a shell script with return value?
Inside groovy, I want to write a shell script that parses the output of
some shell command and get some string value back. How can I get the value
of the shell command?
For example say I want to get the file size of some_file, I'll do
x = sh returnStatus: true, script: '''
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
'''
How can I store the value of ${LINE[4]} in a groovy variable to use later?
Thanks,
Chris
Re: Running a shell script with return value?
Posted by "Nelson, Erick" <Er...@hdsupply.com>.
You might want to not use dollar slashy and use just slashy or ‘’’ as dollar slashy interpolates….or …. Just escape the dollar sign in your shell script with a \
Erick Nelson
Senior Developer – IT
HD Supply Facilities Maintenance
(858) 740-6523
From: Chris Fouts <ch...@ziftsolutions.com>
Reply-To: "users@groovy.apache.org" <us...@groovy.apache.org>
Date: Wednesday, May 30, 2018 at 12:38 PM
To: "users@groovy.apache.org" <us...@groovy.apache.org>
Subject: Re: Running a shell script with return value?
Thanks. Here's the complete code snippet
#!/usr/bin/env groovy
String cmd = $/
IFS=" " read -ra LINE <<< `ls -al | grep Music`
echo ${LINE[4]}
/$
StringBuilder outstr = new StringBuilder()
StringBuilder errstr = new StringBuilder()
Process proc = cmd.execute()
proc.waitForProcessOutput(outstr, errstr)
println $output
When I run it, I get
Caught: groovy.lang.MissingPropertyException: No such property: LINE for class: file
groovy.lang.MissingPropertyException: No such property: LINE for class: file
at file.run(file.groovy:5)
On Wed, May 30, 2018 at 2:59 PM Nelson, Erick <Er...@hdsupply.com>> wrote:
I mistyped
It is …
$/
/$
Similar to
'''
'''
They are known as “dollar slashy strings”
Erick Nelson
Senior Developer – IT
HD Supply Facilities Maintenance
(858) 740-6523<tel:(858)%20740-6523>
From: Chris Fouts <ch...@ziftsolutions.com>>
Reply-To: "users@groovy.apache.org<ma...@groovy.apache.org>" <us...@groovy.apache.org>>
Date: Wednesday, May 30, 2018 at 11:55 AM
To: "users@groovy.apache.org<ma...@groovy.apache.org>" <us...@groovy.apache.org>>
Subject: Re: Running a shell script with return value?
Thanks. Do the /$ designate a begin/end fo the commands I want to execute? So using my example, I do
String cmd = /$
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
/$
On Wed, May 30, 2018 at 2:20 PM Nelson, Erick <Er...@hdsupply.com>> wrote:
String cmd = /$
What you want to shell out and execute here
Remember, java shells out as sh, not bash or your shell of choice
/$
// output and error can be any class that implements Appendable
StringBuilder output = new StringBuilder()
StringBuilder error = new StringBuilder ()
Process proc = cmd.execute()
proc.waitForProcessOutput(output, error)
println proc.exitValue()
Erick Nelson
Senior Developer – IT
HD Supply Facilities Maintenance
(858) 740-6523<tel:(858)%20740-6523>
From: Chris Fouts <ch...@ziftsolutions.com>>
Reply-To: "users@groovy.apache.org<ma...@groovy.apache.org>" <us...@groovy.apache.org>>
Date: Wednesday, May 30, 2018 at 10:58 AM
To: "users@groovy.apache.org<ma...@groovy.apache.org>" <us...@groovy.apache.org>>
Subject: Running a shell script with return value?
Inside groovy, I want to write a shell script that parses the output of some shell command and get some string value back. How can I get the value of the shell command?
For example say I want to get the file size of some_file, I'll do
x = sh returnStatus: true, script: '''
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
'''
How can I store the value of ${LINE[4]} in a groovy variable to use later?
Thanks,
Chris
Re: Running a shell script with return value?
Posted by MG <mg...@arscreat.com>.
http://groovy-lang.org/syntax.html#all-strings
On 30.05.2018 21:38, Chris Fouts wrote:
> Thanks. Here's the complete code snippet
>
> #!/usr/bin/env groovy
>
> String cmd = $/
>
> IFS=" " read -ra LINE <<< `ls -al | grep Music`
>
> echo ${LINE[4]}
>
> /$
>
> StringBuilder outstr = new StringBuilder()
>
> StringBuilder errstr = new StringBuilder()
>
> Process proc = cmd.execute()
>
> proc.waitForProcessOutput(outstr, errstr)
>
> println $output
>
>
> When I run it, I get
>
> Caught: groovy.lang.MissingPropertyException: No such property: LINE
> for class: file
>
> groovy.lang.MissingPropertyException: No such property: LINE for
> class: file
>
> at file.run(file.groovy:5)
>
>
>
> On Wed, May 30, 2018 at 2:59 PM Nelson, Erick
> <Erick.Nelson@hdsupply.com <ma...@hdsupply.com>> wrote:
>
> I mistyped
>
> It is …
>
> $/
>
> /$
>
> Similar to
>
> '''
>
> '''
>
> They are known as “dollar slashy strings”
>
> Erick Nelson
>
> Senior Developer – IT
>
> HD Supply Facilities Maintenance
>
> (858) 740-6523 <tel:%28858%29%20740-6523>
>
> *From: *Chris Fouts <chrisfouts@ziftsolutions.com
> <ma...@ziftsolutions.com>>
> *Reply-To: *"users@groovy.apache.org
> <ma...@groovy.apache.org>" <users@groovy.apache.org
> <ma...@groovy.apache.org>>
> *Date: *Wednesday, May 30, 2018 at 11:55 AM
> *To: *"users@groovy.apache.org <ma...@groovy.apache.org>"
> <users@groovy.apache.org <ma...@groovy.apache.org>>
> *Subject: *Re: Running a shell script with return value?
>
> Thanks. Do the /$ designate a begin/end fo the commands I want to
> execute? So using my example, I do
>
> String cmd = /$
>
> IFS=" " read -ra LINE <<< `ls -al | grep some_file`
>
> echo ${LINE[4]}
>
> /$
>
> On Wed, May 30, 2018 at 2:20 PM Nelson, Erick
> <Erick.Nelson@hdsupply.com <ma...@hdsupply.com>> wrote:
>
> String cmd = /$
>
> What you want to shell out and execute here
>
> Remember, java shells out as sh, not bash or your shell of choice
>
> /$
>
> // output and error can be any class that implements Appendable
>
> StringBuilder output = new StringBuilder()
>
> StringBuilder error = new StringBuilder ()
>
> Process proc = cmd.execute()
>
> proc.waitForProcessOutput(output, error)
>
> println proc.exitValue()
>
> Erick Nelson
>
> Senior Developer – IT
>
> HD Supply Facilities Maintenance
>
> (858) 740-6523 <tel:%28858%29%20740-6523>
>
> *From: *Chris Fouts <chrisfouts@ziftsolutions.com
> <ma...@ziftsolutions.com>>
> *Reply-To: *"users@groovy.apache.org
> <ma...@groovy.apache.org>" <users@groovy.apache.org
> <ma...@groovy.apache.org>>
> *Date: *Wednesday, May 30, 2018 at 10:58 AM
> *To: *"users@groovy.apache.org
> <ma...@groovy.apache.org>" <users@groovy.apache.org
> <ma...@groovy.apache.org>>
> *Subject: *Running a shell script with return value?
>
> Inside groovy, I want to write a shell script that parses the
> output of some shell command and get some string value back.
> How can I get the value of the shell command?
>
> For example say I want to get the file size of some_file, I'll do
>
> x = sh returnStatus: true, script: '''
>
> IFS=" " read -ra LINE <<< `ls -al | grep some_file`
>
> echo ${LINE[4]}
>
> '''
>
> How can I store the value of ${LINE[4]} in a groovy variable
> to use later?
>
> Thanks,
>
> Chris
>
Re: Running a shell script with return value?
Posted by Chris Fouts <ch...@ziftsolutions.com>.
Thanks. Here's the complete code snippet
#!/usr/bin/env groovy
String cmd = $/
IFS=" " read -ra LINE <<< `ls -al | grep Music`
echo ${LINE[4]}
/$
StringBuilder outstr = new StringBuilder()
StringBuilder errstr = new StringBuilder()
Process proc = cmd.execute()
proc.waitForProcessOutput(outstr, errstr)
println $output
When I run it, I get
Caught: groovy.lang.MissingPropertyException: No such property: LINE for
class: file
groovy.lang.MissingPropertyException: No such property: LINE for class: file
at file.run(file.groovy:5)
On Wed, May 30, 2018 at 2:59 PM Nelson, Erick <Er...@hdsupply.com>
wrote:
> I mistyped
>
> It is …
>
>
>
> $/
>
> /$
>
>
>
> Similar to
>
> '''
>
> '''
>
>
>
> They are known as “dollar slashy strings”
>
>
>
> Erick Nelson
>
> Senior Developer – IT
>
> HD Supply Facilities Maintenance
>
> (858) 740-6523
>
>
>
>
>
> *From: *Chris Fouts <ch...@ziftsolutions.com>
> *Reply-To: *"users@groovy.apache.org" <us...@groovy.apache.org>
> *Date: *Wednesday, May 30, 2018 at 11:55 AM
> *To: *"users@groovy.apache.org" <us...@groovy.apache.org>
> *Subject: *Re: Running a shell script with return value?
>
>
>
> Thanks. Do the /$ designate a begin/end fo the commands I want to execute?
> So using my example, I do
>
>
>
> String cmd = /$
>
> IFS=" " read -ra LINE <<< `ls -al | grep some_file`
>
> echo ${LINE[4]}
>
> /$
>
>
>
> On Wed, May 30, 2018 at 2:20 PM Nelson, Erick <Er...@hdsupply.com>
> wrote:
>
>
>
> String cmd = /$
>
> What you want to shell out and execute here
>
> Remember, java shells out as sh, not bash or your shell of choice
>
> /$
>
> // output and error can be any class that implements Appendable
>
> StringBuilder output = new StringBuilder()
>
> StringBuilder error = new StringBuilder ()
>
> Process proc = cmd.execute()
>
> proc.waitForProcessOutput(output, error)
>
> println proc.exitValue()
>
>
>
>
>
> Erick Nelson
>
> Senior Developer – IT
>
> HD Supply Facilities Maintenance
>
> (858) 740-6523
>
>
>
>
>
> *From: *Chris Fouts <ch...@ziftsolutions.com>
> *Reply-To: *"users@groovy.apache.org" <us...@groovy.apache.org>
> *Date: *Wednesday, May 30, 2018 at 10:58 AM
> *To: *"users@groovy.apache.org" <us...@groovy.apache.org>
> *Subject: *Running a shell script with return value?
>
>
>
> Inside groovy, I want to write a shell script that parses the output of
> some shell command and get some string value back. How can I get the value
> of the shell command?
>
>
>
> For example say I want to get the file size of some_file, I'll do
>
>
>
> x = sh returnStatus: true, script: '''
>
> IFS=" " read -ra LINE <<< `ls -al | grep some_file`
>
> echo ${LINE[4]}
>
> '''
>
>
>
> How can I store the value of ${LINE[4]} in a groovy variable to use later?
>
>
>
> Thanks,
>
> Chris
>
>
Re: Running a shell script with return value?
Posted by "Nelson, Erick" <Er...@hdsupply.com>.
I mistyped
It is …
$/
/$
Similar to
'''
'''
They are known as “dollar slashy strings”
Erick Nelson
Senior Developer – IT
HD Supply Facilities Maintenance
(858) 740-6523
From: Chris Fouts <ch...@ziftsolutions.com>
Reply-To: "users@groovy.apache.org" <us...@groovy.apache.org>
Date: Wednesday, May 30, 2018 at 11:55 AM
To: "users@groovy.apache.org" <us...@groovy.apache.org>
Subject: Re: Running a shell script with return value?
Thanks. Do the /$ designate a begin/end fo the commands I want to execute? So using my example, I do
String cmd = /$
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
/$
On Wed, May 30, 2018 at 2:20 PM Nelson, Erick <Er...@hdsupply.com>> wrote:
String cmd = /$
What you want to shell out and execute here
Remember, java shells out as sh, not bash or your shell of choice
/$
// output and error can be any class that implements Appendable
StringBuilder output = new StringBuilder()
StringBuilder error = new StringBuilder ()
Process proc = cmd.execute()
proc.waitForProcessOutput(output, error)
println proc.exitValue()
Erick Nelson
Senior Developer – IT
HD Supply Facilities Maintenance
(858) 740-6523<tel:(858)%20740-6523>
From: Chris Fouts <ch...@ziftsolutions.com>>
Reply-To: "users@groovy.apache.org<ma...@groovy.apache.org>" <us...@groovy.apache.org>>
Date: Wednesday, May 30, 2018 at 10:58 AM
To: "users@groovy.apache.org<ma...@groovy.apache.org>" <us...@groovy.apache.org>>
Subject: Running a shell script with return value?
Inside groovy, I want to write a shell script that parses the output of some shell command and get some string value back. How can I get the value of the shell command?
For example say I want to get the file size of some_file, I'll do
x = sh returnStatus: true, script: '''
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
'''
How can I store the value of ${LINE[4]} in a groovy variable to use later?
Thanks,
Chris
Re: Running a shell script with return value?
Posted by Chris Fouts <ch...@ziftsolutions.com>.
Thanks. Do the /$ designate a begin/end fo the commands I want to execute?
So using my example, I do
String cmd = /$
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
/$
On Wed, May 30, 2018 at 2:20 PM Nelson, Erick <Er...@hdsupply.com>
wrote:
>
>
> String cmd = /$
>
> What you want to shell out and execute here
>
> Remember, java shells out as sh, not bash or your shell of choice
>
> /$
>
> // output and error can be any class that implements Appendable
>
> StringBuilder output = new StringBuilder()
>
> StringBuilder error = new StringBuilder ()
>
> Process proc = cmd.execute()
>
> proc.waitForProcessOutput(output, error)
>
> println proc.exitValue()
>
>
>
>
>
> Erick Nelson
>
> Senior Developer – IT
>
> HD Supply Facilities Maintenance
>
> (858) 740-6523
>
>
>
>
>
> *From: *Chris Fouts <ch...@ziftsolutions.com>
> *Reply-To: *"users@groovy.apache.org" <us...@groovy.apache.org>
> *Date: *Wednesday, May 30, 2018 at 10:58 AM
> *To: *"users@groovy.apache.org" <us...@groovy.apache.org>
> *Subject: *Running a shell script with return value?
>
>
>
> Inside groovy, I want to write a shell script that parses the output of
> some shell command and get some string value back. How can I get the value
> of the shell command?
>
>
>
> For example say I want to get the file size of some_file, I'll do
>
>
>
> x = sh returnStatus: true, script: '''
>
> IFS=" " read -ra LINE <<< `ls -al | grep some_file`
>
> echo ${LINE[4]}
>
> '''
>
>
>
> How can I store the value of ${LINE[4]} in a groovy variable to use later?
>
>
>
> Thanks,
>
> Chris
>
Re: Running a shell script with return value?
Posted by "Nelson, Erick" <Er...@hdsupply.com>.
String cmd = /$
What you want to shell out and execute here
Remember, java shells out as sh, not bash or your shell of choice
/$
// output and error can be any class that implements Appendable
StringBuilder output = new StringBuilder()
StringBuilder error = new StringBuilder ()
Process proc = cmd.execute()
proc.waitForProcessOutput(output, error)
println proc.exitValue()
Erick Nelson
Senior Developer – IT
HD Supply Facilities Maintenance
(858) 740-6523
From: Chris Fouts <ch...@ziftsolutions.com>
Reply-To: "users@groovy.apache.org" <us...@groovy.apache.org>
Date: Wednesday, May 30, 2018 at 10:58 AM
To: "users@groovy.apache.org" <us...@groovy.apache.org>
Subject: Running a shell script with return value?
Inside groovy, I want to write a shell script that parses the output of some shell command and get some string value back. How can I get the value of the shell command?
For example say I want to get the file size of some_file, I'll do
x = sh returnStatus: true, script: '''
IFS=" " read -ra LINE <<< `ls -al | grep some_file`
echo ${LINE[4]}
'''
How can I store the value of ${LINE[4]} in a groovy variable to use later?
Thanks,
Chris