Bash cron作业不会像在命令行上那样执行(Bash cron job doesn't execute like it does on command line)

 我编写了一个执行python脚本的bash脚本，将文件写入目录，然后将该文件发送到Amazon S3。 当我从命令行执行脚本时它完全执行，但是当我用cron运行它时，文件写入目录，但永远不会被发送到S3。 我必须对cron做错事。 
 
 这是bash脚本： 
 
#!/bin/bash

#python script that exports file to home directory
python some_script.py

#export file created by python to S3
s3cmd put /home/bitnami/myfile.csv s3://location/to/put/file/myfile.csv
 
 就像我之前说过的那样，使用./bash_script.sh手动执行工作正常。 当我设置cron作业时，文件会写入目录，但永远不会被发送到S3。 
 
 我的cron工作是： 
 
 18 * * * * /home/bitnami/bash_script.sh 
 
 我错误地使用了cron吗？ 请帮忙。 

I've written a bash script that executes a python script to write a file to a directory, then sends that file to Amazon S3. When I execute the script from the command line it executes perfectly, but when I run it with cron, the file writes to the directory, but never gets sent to S3. I must be doing something wrong with cron.
 
Here is the bash script:
 
#!/bin/bash

#python script that exports file to home directory
python some_script.py

#export file created by python to S3
s3cmd put /home/bitnami/myfile.csv s3://location/to/put/file/myfile.csv
 
Like I said before, manually executing works fine using ./bash_script.sh. When I set up the cron job, the file writes to the directory, but never gets sent to S3.
 
my cron job is:
 
18 * * * * /home/bitnami/bash_script.sh 
 
Am I using cron incorrectly? Please help.

原文：https://stackoverflow.com/questions/29086371