Commands tagged access-control (1)

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print character classes
Today I needed a way to print various character classes to use as input for a program I was writing. Also a nice way to visualize character classes.

Speed up launch of liferea
If you use liferea frequently, you will see obvious speedup after you executed this 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" }

Delete specific sender in mailq

Delete Last Line of a File if it is Blank
Use sed to remove the last line of a file only if it is empty.

Automatically download Ubuntu 10.04 when available
Tested with 9.10 release. Choose whatever torrent client you prefer.

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

send echo to socket network
this command will send a message to the socket 25 on host 192.168.1.2 in tcp. works on udp and icmp understand only IP address, not hostname. on the other side (192.168.1.2), you can listen to this socket and test if you receive the message. easy to diagnose a firewall problem or not.

worse alternative to
worse alternative to ctrl+r: grep the history removing duplicates without sorting (case insensitive search).

Adding Prefix to File name

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