Commands by nickwe (5)

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convert from hexidecimal or octal to decimal
Bash can accept '0x' and '0' notation for hexidecimal and octal numbers, so you just have to output the values.

Remove comments from files
Use sed to remove comments from a file. In this example the comments begin with #. The command '/^#/d' remove line starting with #. The command 's/#.*$//' remove comments at end of lines.

Extract ip addresses with sed
Extracts ip addressess from file using sed. Uses a tag(ip) to grep the IP lines after extracting. Must be a way to just output regex matched on sed.

gawk gets fixed width field

Find out which process uses an old lib and needs a restart after a system update
Shows the full output of lsof.

Find the package that installed a command

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Search for files in rpm repositorys. (Mandriva linux)
Look for an rpm that supplies a specific file that you don't yet have installed. extremely useful when you need something and don't know where it is.. or what its called. note: uses grep like syntax.

Rename files in batch

Monitor RAID IO Usage
Shows the IO of the raid sync


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