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Returning 'IList' vs 'ICollection' vs 'Collection'
...<T> but not the non-generic ICollection, then calling IEnumerable<Cat>.Count() on a Thing<Cat> would be fast, but calling IEnumerable<Animal>.Count() would be slow (since the extension method would look for, and not find, an implementation of ICollection<Cat>). If the ...
Compress files while reading data from STDIN
... is to read data as input and redirect the compressed to output file i.e.
cat test.csv | gzip > test.csv.gz
cat test.csv will send the data as stdout and using pipe-sign gzip will read that data as stdin. Make sure to redirect the gzip output to some file as compressed data will not be written...
How do I list one filename per output line in Linux?
...n answer is or that this answer has fewer votes than the one that pipes to cat. ls -1 ftw.
– crantok
May 21 '13 at 21:05
4
...
Run R script from command line
...ew file called a.Rout will be created.
R CMD BATCH a.R
# Check the output
cat a.Rout
One other thing to note about using Rscript is that it doesn't load the methods package by default which can cause confusion. So if you're relying on anything that methods provides you'll want to load it explicit...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...本的Linux缺省使用Syslog，其配置大致如下所示：
shell> cat /etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
# kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication ...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...本的Linux缺省使用Syslog，其配置大致如下所示：
shell> cat /etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
# kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication ...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...本的Linux缺省使用Syslog，其配置大致如下所示：
shell> cat /etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
# kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication ...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...本的Linux缺省使用Syslog，其配置大致如下所示：
shell> cat /etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
# kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication ...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...本的Linux缺省使用Syslog，其配置大致如下所示：
shell> cat /etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
# kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication ...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...本的Linux缺省使用Syslog，其配置大致如下所示：
shell> cat /etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
# kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication ...