shell下文件内容拼接，用逗号分隔

[root@node1 ~]# cat tableName.txt hello
hadoop
spark
mapreduce
storm
python

[root@node1 ~]#

要达到的效果
hello,hadoop,spark,mapreduce,storm,python

[root@node1 ~]#  echo `(cat tableName.txt)` | sed 's/ /,/g'hello,hadoop,spark,mapreduce,storm,python
[root@node1 ~]#

 echo `(cat tableName.txt)` | sed 's/ /,/g'

作者：Mr_Alfred
链接：https://www.jianshu.com/p/2339c7ad7738
x