Seconds since Epoc or Unixtime is ever increasing value and it remains stable (except for leap second). Daylight Savings changes does not affect it.
`ps -eo pcpu,pid,ruser,args | sort -r -k1 | less` provides in reverse sort order the `pid` that is taking up most of `pcpu` and the `ruser` (real user) with `ar...
Using snmpwalk on interface table (220.127.116.11.18.104.22.168.1.1 and 22.214.171.124.126.96.36.199.1.3) one can retrieve network information of a system centrally.
Using grep and pattern matching, empty lines can be removed from an array in perl.
Using -size and -exec flags of find command, one can easily find when the logfile has grown above the threshold and move it to another name in one shot.
Using simple year could be automatically updated in Copyright information.
Using find and test commands you can search for the dangling or broken soft links on a Unix system.
"find" command allows "-exec command ;" flag to support running a command on result. For the shorter output from find "xargs" can be used.
"php -m" provides the list of all compiled in modules.
Bash expands a list of strings separated by commas with in braces to a list of strings separated by spaces. This can be used to process files without whole lot ...