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How to get 30 days prior to current date?
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@chovy the only way I can imagine you're getting that error is because you're not calling setDate() on a Date object. It's impossible to diagnose without seeing your code, though.
– Rory McCrossan
Jan 9 at 8:32
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Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...