Commands by Sepero

Commands by Sepero (6)

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Echo the contents of a Url

Directly send the content of a url to standard out. This command is most convenient for sending the output of a download directly to another command. Show Sample Output
This is sample output - yours may be different.
```
# Get your ip address. 
~$ echourl http://ipecho.net/plain
87.187.44.62

# Get all the email addresses on a page.
~$ echourl "http://www.example.com/contact.html" | grep -oP "\S*@\S*"
[email protected]

# Download and extract a file, without saving it.
~$ echourl "http://www.example.com/tarball.gz" | tar -xz
```
1

alias echourl="wget -qO -"

Sepero · 2014-06-14 00:23:07 0
Btrfs: Find file names with checksum errors

Btrfs reports the inode numbers of files with failed checksums. Use `find` to lookup the file names of those inodes. The files may need to be deleted and replaced with backups.
This is sample output - yours may be different.
1

dmesg | grep -Po 'csum failed ino\S* \d+' | awk '{print $4}' | sort -u | xargs -n 1 find / -inum 2> /dev/null

Sepero · 2014-03-22 12:22:46 1
Btrfs: Find file names with checksum errors

Btrfs reports the inode numbers of files with failed checksums. Use `find` to lookup the file names of those inodes.
This is sample output - yours may be different.
-1

dmesg | grep -Po 'csum failed ino\S* \d+' | sort | uniq | xargs -n 3 find / -inum 2> /dev/null

Sepero · 2014-03-20 06:27:15 3
Create a tar archive using xz compression

Compress files or a directory to xz format. XZ has superior and faster compression than bzip2 in most cases. XZ is superior to 7zip format because it can save file permissions and other metadata data.
This is sample output - yours may be different.
1

tar -cJf myarchive.tar.xz /path/to/archive/

Sepero · 2014-03-13 03:34:18 0
A trash function for bash

apt-get install trash-cli Commandline program that allows you put folders or files in the standard KDE/Unity desktop trash.
This is sample output - yours may be different.
1

trash-put junkfolder

Sepero · 2014-03-09 00:24:09 1
Immediately put execute permission on any file saved/created in $HOME/bin
This is sample output - yours may be different.
1

inotifywait -mr -e CREATE $HOME/bin/ | while read i; do chmod +x "$(echo "$i" | sed 's/ \S* //')"; done

Sepero · 2014-03-08 19:21:53 1

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Format date/time string for a different day

The "date' command has options to easily format the date, day, month, time, etc. But what if you want a relative date or time. Like, I wanted yesterday's date in a particular format. You may want the exact date of "2 months ago" or "-3 days" nicely formatted. For that, you can use this command. The --date option takes fuzzy parameters like the ones mentioned in the previous sentence.

awk change field separator

GNU Awk 3.1.4

whois filtering the important information

Day of the week of your birthday over the years.

Do you ever want to know which day of week was your birhday! Now you can check that with this command, just set your birh date at the beginning (My bday in the example) and the dates will be revealed. ;)

Quickly generate an MD5 hash for a text string using OpenSSL

Rsync remote data as root using sudo

If your user has sudo on the remote box, you can rsync data as root without needing to login as root. This is very helpful if the remote box does not allow root to login over SSH (which is a common security restriction).

get a random 0/1, use it for on/off, yes/no

use it to add a random boolean switch to your script

Show permissions of current directory and all directories upwards to /

NB not 'namei -m .', as it slices the path you give it.

See loaded modules in apache

Easiest way to check which modules are loaded in apache.

export iPad, iPhone App list to txt file

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