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Ask user to confirm
This version works across on all POSIX compliant shell variants.

check open ports without netstat or lsof

Open Perl module source in your editor
Ever needed to look at the Perl source of an installed module on your system? This works in 90% of cases.

For finding out if something is listening on a port and if so what the daemon is.
See what's listening on your IPv4 ports on FreeBSD.

Drop all tables from a database, without deleting it
Uses two comands, requieres mysqldump, but works as expected.

List the size (in human readable form) of all sub folders from the current location
Sorted in human readable format.

Delete backward from cursor, useful when you enter the wrong password

convert unixtime to human-readable with awk
- convert unixtime to human-readable with awk - useful to read logfiles with unix-timestamps, f.e. squid-log: sudo tail -f /var/log/squid3/access.log | awk '{ print strftime("%c ", $1) $0; }

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" }

List files with full path
Prints contents of current directory with the full path prepended to each entry. You can add '-type f' if you don't want the directories to show up (for those less familiar with find). I can't believe ls doesn't have an option for this.


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