Commands by bibe

Commands by bibe (5)

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Swap the two last arguments of the current command line

Say you just typed a long command like this: rsync -navupogz --delete /long/path/to/dir_a /very/long/path/to/dir_b but you really want to sync dir_b to dir_a. Instead of rewriting all the command line, just type followed by , and your command line will read rsync -navupogz --delete /very/long/path/to/dir_b /long/path/to/dir_a
This is sample output - yours may be different.
15

<ctrl+e> <esc+t>

bibe · 2012-03-11 07:49:09 4
Cleanup a (source) text file, removing trailing spaces/tabs and multiple consecutive blank lines

I used this command (in addition to a code formatting tool) to "cleanup" a bunch of PHP files
This is sample output - yours may be different.
1

sed -i -e 's/[ \t]*$//;/^$/N;/\n$/D' sourcefiletocleanup

bibe · 2012-02-10 11:09:54 0
Completly blank a disk

Instead of zeroing the filesystem, this command overwrites N times (default is 3) the disk content, making data recovery much harder. The command accepts many more options
This is sample output - yours may be different.
0

shred --iterations=N /dev/sdaX

bibe · 2012-01-23 20:40:36 0
Remove invalid key from the known_hosts file for the IP address of a host

Works for multiple hosts (such as www.google.com) and/or wrong hosts. Show Sample Output
This is sample output - yours may be different.
```
/home/USER/.ssh/known_hosts updated.
Original contents retained as /home/USER/.ssh/known_hosts.old
/home/USER/.ssh/known_hosts updated.
Original contents retained as /home/USER/.ssh/known_hosts.old
```
0

for HOSTTOREMOVE in $(dig +short host.domain.tld); do ssh-keygen -qR $HOSTTOREMOVE; done

bibe · 2012-01-19 15:57:10 0
Rank top 10 most frequently used commands

I make an extensive use of sudo, so I had to exclude the sudo part of the command history
This is sample output - yours may be different.
-2

history | sed -e 's/^sudo //' | awk '{print $2}' | sort | uniq -c | sort -rn | head

bibe · 2012-01-07 22:29:54 0

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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Send youtube video to Kodi

Kodi needs the youtube plugin to be installed.

Probably, most frequent use of diff

This form is used in patches, svn, git etc. And I've created an alias for it: alias diff='diff -Naur --strip-trailing-cr' The latter option is especially useful, when somebody in team works in Windows; could be also used in commands like $ svn diff --diff-cmd 'diff --strip-trailing-cr'...

Alternative size (human readable) of files and directories (biggest last)

using mb it's still readable;) a symbol variation $ du -ms {,.[^.]}* | sort -nk1

create shortcut keys in bash

check open ports without netstat or lsof

Upgrade all expired homebrew packages

You probably want to run `brew update` before you run this command

Copy with progress

tar.gz with gpg-encryption on the fly

Create a encrypted tar.gz file from a directory on the fly. The encryption is done by GPG with a public key. The resulting filename is tagged with the date of creation. Very usefull for encrypted snapshots of folders.

list files recursively by size

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Commands by bibe (5)

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