Commands by BorneBjoern

Commands by BorneBjoern (4)

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Filter IP's in apache access logs based on use

avoiding UUOC! cut can handle files as well. No neet for a cat.
This is sample output - yours may be different.
0

cut -d ' ' -f 1 /var/log/apache2/access_logs | uniq -c | sort -n

BorneBjoern · 2013-09-17 20:05:03 0
Get the IP address

gives u each configured IP in a seperate line. Show Sample Output
This is sample output - yours may be different.
```
127.0.0.1/8
10.28.66.71/24
```
3

ip -f inet a | awk '/inet / { print $2 }'

BorneBjoern · 2012-07-18 15:13:10 0
find the device when you only know the mount point

less ressources (processes) needed Show Sample Output
This is sample output - yours may be different.
```
/dev/sdc1
```
-1

grep -w /media/KINGSTON /proc/mounts | cut -d " " -f

BorneBjoern · 2011-01-25 23:45:35 0
Fetch the Gateway Ip Address

same thing without loop ;)
This is sample output - yours may be different.
0

/sbin/route -n | grep "^0\.0\.0\.0" | awk '{ print $2 }'

BorneBjoern · 2010-03-07 13:59:57 1

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Unite pdf files

pdfunite is a part of the poppler-utils. poppler-utils package is only 150KB. The alternative - pdftk package is 14MB! Install poppler-utils if you need simple pdf operation commands like unite, separate, info, text/html conversions

Batch convert PNG to JPEG

Convert all PNG images in directory to JPEG using ImageMagick, and delete the old PNG images.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Print info about your real user.

To get your effective user: whoami

pattern match in awk - no grep

Rather than chain a string of greps together and pipe them to awk, use awk to do all the work. In the above example, a string would be output to stdout if it matched pattern1 AND pattern2, but NOT pattern3.

Show directories in the PATH, one per line

This version uses Pipes, but is easier for the common user to grasp... instead of using sed or some other more complicated method, it uses the tr command

Easily decode unix-time (funtion)

Undo mkdir -p new/directory/path

Removes all directories on given path, working from right to left, and stops when reaching a non-empty directory Counterpart of $ mkdir -p new/directory/path Shortcut (must be issues as next command immediately after mkdir): $ ^mk^rm ( see http://www.commandlinefu.com/commands/view/19/runs-previous-command-but-replacing )

Add a progress counter to loop (see sample output)

For this hack you need following function: $ finit() { count=$#; current=1; for i in "[email protected]" ; do echo $current $count; echo $i; current=$((current + 1)); done; } and alias: $ alias fnext='read cur total && echo -n "[$cur/$total] " && read' Inspired by CMake progress counters.

Stay in the loop…

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