linux下怎么把一行数据变成一列?

用xargs -n1

格式:

echo XXX XXX XXX |xargs -n1

[root@zabbix ~]# echo the squid project provides a number of resources toassist users design|xargs -n1
the
squid
project
provides
a
number
of
resources
toassist
users
design

并且xargs可以去掉换行符

怎么把一列数据变为一行?

格式:

xxxx（你的命令）| xargs

[root@zabbix ~]# cat lie.txt 
of
resources
toassist
users
design,implement
and
support
squid
[root@zabbix ~]# cat lie.txt |xargs
of resources toassist users design,implement and support squid