Commands by log0

Commands by log0 (7)

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rgrep: recursive grep without .svn
This is sample output - yours may be different.
-4

grep query -r . --exclude-dir=.svn

log0 · 2011-09-24 23:20:06 3

List debian package installed by size

You need to install the package wajig. Show Sample Output

-1

wajig large

log0 · 2009-09-16 22:14:27 3

Display the definition of a shell function

Display the code of a previously defined shell function. Show Sample Output
This is sample output - yours may be different.
```
$ myfun () {echo "test"};
$ typeset -f myfun
myfun () {
        echo "test"
}
```
1

typeset -f <function-name>

log0 · 2009-08-04 17:07:21 3
Stripping ^M at end of each line for files
This is sample output - yours may be different.
12

dos2unix <filenames>

log0 · 2009-07-15 13:05:18 3
Search through files, ignoring .svn
This is sample output - yours may be different.
2

grep <pattern> -R . --exclude-dir='.svn'

log0 · 2009-07-13 19:08:53 6
mail with attachment

An easy one but nice to keep in mind.
This is sample output - yours may be different.
2

tar cvzf - data1 data2 | uuencode data.tar.gz | mail -s 'data' you@host.fr

log0 · 2009-05-01 23:13:08 10
Smart renaming

A powerfull way to rename file using sed groups. & stand for the matched expression. \1 referes to the first group between parenthesis. \2 to the second. Show Sample Output
This is sample output - yours may be different.
```
Produce commands like:
mv banana_train_data_1.asc banana_1_train_data.asc
```
6

ls | sed -n -r 's/banana_(.*)_([0-9]*).asc/mv & banana_\2_\1.asc/gp' | sh

log0 · 2009-04-28 17:53:58 5

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Validate openssh key & print checksum

grep -v with multiple patterns.

You can use -e to pass multiple patterns.

Oneliner to get domain names list of all existing domain names (from wikipedia)

Quietly get a webpage from wikipedia: curl -s By default, don't output anything: sed -n Search for interesting lines: /<tr valign="top">/ With the matching lines: {} Search and replace any html tags: s/<[^>]*>//g Finally print the result: p

Copy a directory recursively without data/files

Show a prettified list of nearby wireless APs

parse and format IP:port currently in listen state without net tools

Useful for containers and environments where you need to know if a port is currently in listen mode but you have not easy way or privileges to install net-tools like netstat or ss. "0A" is the code for listen state. The IP hex is reverse order and all in hex format.

Detect illegal access to kernel space, potentially useful for Meltdown detection

Based on capsule8 agent examples, not rigorously tested

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)

Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Look for IPv4 address in files.

It finds a SNMP OID too :-(

remove *.jpg smaller than 500x500

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Commands by log0 (7)

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