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I have a script(main.sh) which calls another script(Get_Files.sh) and gets a value in a variable like the below:

File_to_Refresh="$(sh /Aug/work/Get_Files.sh /Aug/Work/Universal_File.txt)"

Now I have to schedule the script main.sh for 3 different files i.e. the Universal_File.txt with 3 different values and on 3 different days.

So, to make the script generic, I want to pass the Universal file to Get_Files.sh from the Cron Entry only.

How Can i achieve the same?

Below is working if I run the script manually like sh /Aug/Work/main.sh /Aug/Work/Universal_File.txt but it's not working when i run it through cron.

File_to_Refresh="$(sh /Aug/work/Get_Files.sh "$1")"

Cron :

45 08 * * * sh /Aug/Work/main.sh /Aug/Work/Universal_File.txt
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  • Are you trying to execute main.sh every day, but Get_Files.sh uses each of the 3 files every third day? (so file1, file2, file3 in a 3 day cycle) Commented Sep 5, 2019 at 8:35
  • No , I execute main.sh as per the below dates: monday--( with get_file.sh uses file1) Wednesday-- (with get_file.sh uses file2) Friday--( with get_file.sh uses file3) Commented Sep 5, 2019 at 9:28
  • Are you attempting to have just one cron entry, or will 3 (one each for mon/wed/fri) do? Is there any reason the script cannot be day-of-week aware and have three different statements depending on which day it is? (Or at least use some logic based on a parameter passed to it to decide which one) Commented Sep 5, 2019 at 9:46
  • offcourse , there will be 3 cron entries as i run for different files on 3 days. Commented Sep 5, 2019 at 9:52
  • I just want of we can pass the file from cron itself and define something like a $VAR in my script in place of file Commented Sep 5, 2019 at 9:53

1 Answer 1

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If you have 3 cron entries, 1 for each day (as mentioned in comments), you should be able to specificy the file used for each cron entry as an argument and use $1 in the main.sh script

$ cat main.sh
File_to_Refresh=$(sh sub.sh $1)
echo FileToRefresh: $File_to_Refresh

$ cat sub.sh
echo Sub \$1: $1

$ ./main.sh /Aug/Work/File1.txt
FileToRefresh: Sub $1: /Aug/Work/File1.txt

Not convinced you need the " marks around the $(xxx), it seems to work both ways for me.

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  • Thanks Smock..Let me check that. Commented Sep 5, 2019 at 11:26
  • Added the comments , I tried as suggested, but it's not working Commented Sep 5, 2019 at 12:50
  • can you add an echo Sub \$1: $1 into the Get_Files.sh script to see if the parameter is being passed to it or not? Commented Sep 5, 2019 at 13:09
  • Changed it "$1" and it is working manually but not from cron Commented Sep 9, 2019 at 8:13
  • do any of the scripts rely on environment variables? Commented Sep 9, 2019 at 14:54

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