Commands by unixhome (6)

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Automatically tunnel all ports of running docker instances in boot2docker
It requires https://jqplay.org/, that comes with brew: brew install jq

generate 30 x 30 matrix
or $ od /dev/urandom -w60 -An|sed 's/ ..../ /g'|head -n 30 (this one lacks digits 8 and 9)

Prints total line count contribution per user for an SVN repository
make usable on OSX with filenames containing spaces. note: will still break if filenames contain newlines... possible, but who does that?!

connect via ssh using mac address
Connect to a machine running ssh using mac address by using the "arp" command

Makes the permissions of file2 the same as file1
same as the chmod example, but should also copy extended access control list attributes. deliberately stolen from: $man setfacl

Kill multiple instances of a running process

List all installed PERL modules by CPAN
This command will give you the detailed information about the installed perl modules i.e. installed path, Link type, version, files etc.

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" }

for too many arguments by *
$ grep ERROR *.log -bash: /bin/grep: Argument list too long $ echo *.log | xargs grep ERROR /dev/null 20090119.00011.log:DANGEROUS ERROR

cat stdout of multiple commands


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