linux reference

[Karsten Breivik_1]

OK here are a few nice commands

df //Free disk. Option -i lists open inodes

du //Disk usage. Nice to combine with other commands like du --max-depth=1 -h -x |less or du -sk * | sort -n

ulimit -a //limit of open files

sar //Collect, report, or save system activity information

vmstat //Report virtual memory statistics

top //CPU info. Press m for memory info

lsof //ls open files. information about files opened by processes

uname -a //system info