I'm using a grunt shell of PIGLATIN and I am trying to print a simple message, like in shell ECHO "result is :" and then result given by Pig script .
However I have done all the searches and no luck so far.
Echo returns error , same as print.
I can't use UDFs...
You can DUMP the alias or STORE the alias in to file to see the alias values.
Refer :
http://chimera.labs.oreilly.com/books/1234000001811/ch05.html#pl_dump
http://chimera.labs.oreilly.com/books/1234000001811/ch05.html#pl_store
Related
in Jenkins file one of the variable is having the comma separated values like below.
infra_services=[abc,def,xyz]
when I write the below code it was throwing an error.
if ("{$Infra_Services}".contains("xyz"))
then
echo "$Infra_Services"
fi
yes you can do if statements in a Jenkinsfile. However if you are using declarative pipeline you need to brace it with the step script.
Your issue comes from the fact you did not put any double quotes around "abc" and all the elements of your array
infra_services=[abc,def,xyz]
A second error will raise after you fix this. If infra_services is an array, to manipulate it you should not try to cast it as string. It should throw when you do "{$Infra_Services}"
here is a working example
def Infra_Services = ["abc","def","xyz"]
if (Infra_Services.contains("xyz")) {
println "found"
}
My advice is to test your groovy before running it on jenkins, you will gain precious time. Here is a good online groovy console I use to test my code. running the groovy console from terminal is an alternative
https://groovyconsole.appspot.com/
I want my Nim program to write to the console if there is one, and redirect echo to write to a file if there isn't. Is there an equivalent to the Environment.UserInteractive property in .NET which I could use to detect if no console is available and redirect stdout in that case?
It's a combination of using isatty() as suggested by genotrance and the code that you found :)
# stdout_to_file.nim
import terminal, strformat, times
if isatty(stdout): # ./stdout_to_file
echo "This is output to the terminal."
else: # ./stdout_to_file | cat
const
logFileName = "log.txt"
let
# https://github.com/jasonrbriggs/nimwhistle/blob/183c19556d6f11013959d17dfafd43486e1109e5/tests/cgitests.nim#L15
logFile = open(logFileName, fmWrite)
stdout = logFile
echo fmt"This is output to the {logFileName} file."
echo fmt"- Run using nim {NimVersion} on {now()}."
Save above file as stdout_to_file.nim.
On running:
nim c stdout_to_file.nim && ./stdout_to_file | cat
I get this in the created log.txt:
This is output to the log.txt file.
- Run using nim 0.19.9 on 2019-01-23T22:42:27-05:00.
You should be able to use isatty().
Here's an example in Nimble.
Edit:
#tjohnson this is in response to your comment. I don't have enough points to respond to your comment directly or something? Thanks Stack Overflow...
It's hard to say without seeing more of the code.
What version of Nim are you using?
I suspect stdout has been shadowed by a read only symbol.
Are you calling this code inside of a proc and passing stdout as an argument?
like this:
proc foo(stdout: File)
If so, you will need to change it to a var parameter to make the argument writable:
proc test(stdout: var File)
Or use stdout as a global variable instead.
I have a custom package I want to install automatically in my docker using expect.
The first thing the package asks me to do is press Enter to continue, then it prints another 2 empty lines then it waits for an input.
My expect script :
#!/usr/bin/expect -f
set timeout -1
spawn ./install
expect "\n"
send -- "\n"
But as you can see in the image, it just runs the installer and exits.
I tried removing the expect "\n" so only send -- "\n" will execute but now even the install message doesn't appear (tried with set timeout 1000 before send and it also didn't work)
Any ideas?
P.S : This is a link to the package if anyone wants to have a go at it:
https://www.bayometric.com/downloads/digital-persona/DP_UareU_Linux223_20140429.2.zip
(the installer is inside DP-UareU-RTE-2.2.3-1.20140429_1533.tar.gz)
expect "\n" match a linefeed exactly, I think this is not what your program is sending.
To wait for a Shell prompt you can use expect "%" or expect "*" to match anything.
If you need to make sure you're dealing with the right prompt you may be able to use something like expect "*Linux Installation*".
Also don't send \n but \r for the enter key :
#!/usr/bin/expect
spawn ./install
expect "*Linux Installation*"
send "\r"
expect eof
Note that the default flag is -gl for glob pattern matching but you can also use the -re flag for regular expression matching.
I want to call run a file called csvplot.vbs (from this site) to turn a .csv file I have written using dxl (has 5 columns, each with a heading and then just numerical data) into a graph (stored as .png).
I have run the following instruction directly through cmd with success:
#echo off
cscript //nologo C:\Users\Administrator\csvplot.vbs C:\PROGRA~1\IBM\Rational\DOORS\9.6\lib\dxl\addins\Verification\Statistics\statGenTest_Top_Level.csv C:\PROGRA~1\IBM\Rational\DOORS\9.6\lib\dxl\addins\Verification\Statistics\statGenTest_Top_Level.png 800 600 1 3 1 4 1 5
pause
This produces the desired .png file.
What I want, however, is to be able to execute this through DOORS, so that whenever the script that generates the raw data is run, it also produces a graph.
What I have is this as my test case:
string echostr = "#echo off"
string commands = "cscript //nologo C:\\Users\\Administrator\\csvplot.vbs C:\\PROGRA~1\\IBM\\Rational\\DOORS\\9.6\\lib\\dxl\\addins\\Verification\\Statistics\\statGenTest_Top_Level.csv C:\\PROGRA~1\\IBM\\Rational\\DOORS\\9.6\\lib\\dxl\\addins\\Verification\\Statistics\\statGenTest_Top_Level.png 800 600 1 3 1 4 1 5"
system("cmd /c start #echo off") // doesn't recognise echo command
system("cmd /c start " commands "")
I get an error:
"Windows cannot find '#echo'. Make sure you typed the name correctly,
and then try again."
I am at a loss on how to get the script to run though cmd from dxl, and I would appreciate any help. I've only had one previous foray into system() prompts through dxl, and it was only to open a .pdf. In the meantime I will keep trying to work this out. Please let me know if I can provide any further information.
Edit: Further Information
#echo: I removed the # to see how it operates, it brings up a blank
cmd window and performs no further action. In order to even run the things in the points below, I left the # off.
I deleted "/c start" from the second system() line: this opens one command line with the usual white text at the top, and a second over the top that is completely blank.
I changed the first line as follows, and commented out the second:
system("cmd /c start echo off" "\n" commands "")
--- this got a similar result to the second dot-point, but only with one cmd window, the black (no text one)
If I don't include the "\n" marker then I get a cmd window with text of "off" commands (where commands is the defined string above).
If I only have the system("cmd /c start " commands "") line, and not the echo line, then a cmd window briefly flashes and disappears and no further results demonstrating the success of the script appear.
So my issue is this: I know this script works when run directly through command line, the problem I have is that I cannot now run it through dxl.
I have developed a solid work-around that does exactly what I need.
The issue was that the input I had dxl writing was not going through command line correctly.
Knowing that the script ran from cmd correctly and, in turn, that the script executed from a batch file correctly, and that I could run the batch file from dxl, my solution was as follows:
Define the paths in dxl using the format C:\PROGRA~1\PATHNAME\
Using the Stream write() command to write the instructions directly
to a .bat file
Then using the system() command to run the .bat file
I have included some of my code, so that maybe it might help someone attempting to do the same thing. (I'll gladly take any advice on better programming conventions.)
// functions used: genFileName(), assume if a variable is not declared here, it was declared under my globals
// genFileName() returns a string of the file name, replacing any " " with "_" so cmd doesn't cry when I run it
string basename = genFileName()
string fcsv = basename ".csv"
string csvPath = "blahblahthefilepath" fcsv
if(fileExists_(csvPath)) isFile = true
Stream fOut = append(csvPath)
// === if file does not exist, create, give column names
if( !isFile){
fOut << "Date and Time,count1,count2,count3,count4" "\n"
}
else ack ("File name exists, append stats to file?" // may not be necessary
// === print to file ===
fOut << datetime "," ctot "," ctc "," cti "," ctnc "\n"
// ===== Create Batch file to run grapher ===
string columnsToPlot = "1 3 1 4 1 5" // ==> may develop this to allow user to choose
string graphDim = "800 600" // ==> px dim, may develop for user choice
string fbat = basename ".bat"
string batPath = "blahblahthefilepath"
Stream batOut = write(batPath fbat)
batOut << "#echo off" "\n"
batOut << "title Batch file to plot statistics for " fcsv "\n"
batOut << "cscript //nologo " batPath "csvplot.vbs " batPath fcsv " " batPath basename ".png " graphDim " " columnsToPlot ""
system("cmd /c start " batPath fbat "")
// some infoBox feedback DB to tell the user that the files were created
Good luck to anyone else who is attempting something similar, and I hope this is of use to someone.
Does running the dxl script without the # in front of the echo command work?
I want to use sqlplus within ruby. Dont want to use any gems[bec I cannot get it installed on our servers without much help from other teams ..etc] and want to keep it very minimal.
I am trying something as simple as this in my ruby script:
`rlwrap sqlplus user/pswd#host << EOF`
`set serveroutput on;`
`commit;` #ERROR1: sh: commit: not found
sql = "insert /*+ APPEND*/ INTO table(col1, col2) values (#{data[0]},#{data[1]});"
`#{sql}` #ERROR2: sh: Syntax error: "(" unexpected
Can anyone help me with ERROR1 and ERROR2 above
Basically for "commit: not found" I think its getting executed on shell rather than in sqlplus. However seems like "set serveroutput on" seems to execute fine !
For ERROR2, I am clueless. I also tried using escape slash for the "/" in the sql.
Thanks
The answer is, don't use SQL*Plus. Don't call a command-line utility from inside your script; between the ruby-oci8 gem and the ruby-plsql gem, you can do anything you could accomplish from within SQL*Plus.
The reason you get the errors is that you are sending each line to the shell individually. If your entire statement was wrapped in a single pair of backticks, it might work.
But if you really are unable to install the proper gems, put the commands in a temporary file and tell sqlplus to execute that, eg:
require 'tempfile'
file = Tempfile.open(['test', '.sql'])
file.puts "set serveroutput on;"
file.puts "commit;"
file.puts "insert /*+ APPEND*/ INTO table(col1, col2) values (#{data[0]},#{data[1]});"
file.puts "exit;" # needed or sqlplus will never return control to your script
file.close
output = `sqlplus user/pswd#host ##{file.path}`
file.unlink
You'll have to be very careful about:
Quoting values (if using oci8/dbi you could use bind variables)
Error handling. If using ruby libraries, errors would raise exceptions. Using sqlplus, you'll have to parse the output instead. Yuck!
So it can be done but I highly recommend you jump through whatever hoops are required to get oci8 (and maybe ruby-DBI) installed properly :)
ps are you sure you want to commit before the insert?