oneliners

#!/bin/bash

alias wiki="dig +short txt "$1".wp.dg.cx"
alias site-dl="wget --random-wait -r -p -e robots=off -U mozilla http://www.example.com"
alias simtyping="echo 'You can simulate on-screen typing just like in the movies' | pv -qL 10"
alias mkadir="mkdir "$1" && cd $_"
alias numrights="stat -c '%A %a %n' *"
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# sed replace last character if not '>'
cat test
aaa>
bbb
ccc>
ddd
>

sed -i "/>\$/ ! s/\$/<br>/g" test
$cat test
aaa>
bbb<br>
ccc>
ddd<br>
>
<br>

# awk on df output (without errors), skip first line with next, find in first column if contain /dev/sd or xtra and print+count, then print nb (no matter var name)
df -h 2>/dev/null|awk 'NR==1 {next;}; $1 ~ "/dev/sd|xtra" {print;compte++;}; END {print "Nb de partitions SD: ", compte}'

# awk easy skip first 3 lines
awk 'FNR>3' testfile

# colorizing man
apt-get install most && update-alternatives --set pager /usr/bin/most

#unix time convertion
date -d @1234567890

# dmesg with human colored date
dmesg -T|sed -e 's|\(^.*'`date +%Y`']\)\(.*\)|\x1b[0;34m\1\x1b[0m - \2|g'

# diagram of user/group
awk 'BEGIN{FS=":"; print "digraph{"}{split($4, a, ","); for (i in a) printf "\"%s\" \n\"%s\" -> \"%s\"\n", $1, a[i], $1}END{print "}"}' /etc/group

#diff over ssh
ssh user@host cat /path/to/remotefile | diff /path/to/localfile -

# top ten ps by usage
ps aux | sort -nk +4 | tail

# quick rename
mv filename.{old,new}
# or backup
cp file.txt{,.bak}


# network activity
lsof -i
# for apps
lsof -P -i -n
#or
lsof -P -i -n | cut -f 1 -d " "| uniq | tail -n +2
#or
ss -p

# opened port fid  prpgrm
lsof -i tcp:80
lsof -Pni4 | grep LISTEN

# analyse traffic through ssh
ssh root@server.com 'tshark -f "port !22" -w -' | wireshark -k -i -

# discover brute force attempts
sudo zcat /var/log/auth.log.*.gz | awk '/Failed password/&&!/for invalid user/{a[$9]++}/Failed password for invalid user/{a["*" $11]++}END{for (i in a) printf "%6s\t%s\n", a[i], i|"sort -n"}'

# Apache logs analyze most common ip
tail -10000 access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail

# list alive host
nmap -sP 192.168.1.0/24

# display IP communicating with interface
sudo tcpdump -i wlan0 -n ip | awk '{ print gensub(/(.*)\..*/,"\\1","g",$3), $4, gensub(/(.*)\..*/,"\\1","g",$5) }' | awk -F " > " '{print $1"\n"$2}'

#list conn
netstat -ant | awk '{print $NF}' | grep -v '[a-z]' | sort | uniq -c

# list ip connected to my host
netstat -lantp | grep ESTABLISHED |awk '{print $5}' | awk -F: '{print $1}' | sort -u

# git remove deleted files
git rm $(git ls-files --deleted)

# close hanged ssh session
~.

# recursive search and replace in files
$ grep -rl oldstring . |xargs sed -i -e 's/oldstring/newstring/'

# rename .jpeg and .JPG to .jpg
rename 's/\.jpe?g$/.jpg/i' *

# remove Thumbs.db frome folders
find ./ -name Thumbs.db -delete

# remove Samples dirs
find ./ -iname "Sample*" -type d -exec rm -rfv {} +

# recursive compare dirs
diff -urp /originaldirectory /modifieddirectory

# list dirs by size
du -h /path | sort -h

# mkcd
md () { mkdir -p "$@" && cd "$@"; }


# MYSQQL
# copy db trough ssh
mysqldump --add-drop-table --extended-insert --force --log-error=error.log -uUSER -pPASS OLD_DB_NAME | ssh -C user@newhost "mysql -uUSER -pPASS NEW_DB_NAME"



# find dupes
find -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate

# strace with pid
strace -ff -e trace=write -e write=1,2 -p SOME_PID

# cp with pv
pv source > dest

# subdir tree
ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'

# make folder tree
mkdir -p work/{d1,d2}/{src,bin,bak}

# compare dir trees
diff <(cd dir1 && find | sort) <(cd dir2 && find | sort)


# vim over ssh
vim scp://username@host//path/to/somefile

# monitor process of command
pv access.log | gzip > access.log.gz

# convert seconds to human readable
date -d@1234567890

# remove pdf security limitation with ghostscript
gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=OUTPUT.pdf -c .setpdfwrite -f INPUT.pdf

# processor memory bandwidth in gb/s
dd if=/dev/zero of=/dev/null bs=1M count=32768

# copy file rights from one to another
chmod --reference file1 file2

# ps full
ps awwfux | less -S

# list bash shortcuts
bind -P

# remove all empty dir recurssive
find . -type d -empty -delete

# system state
diff <(lsof -p 1234) <(sleep 10; lsof -p 1234)

# weather
curl wttr.in/seville

# download all image from website 
wget -r -l1 --no-parent -nH -nd -P/tmp -A".gif,.jpg" http://example.com/images

# download html page and convert to pdf
wget $URL | htmldoc --webpage -f "$URL".pdf - ; xpdf "$URL".pdf &

# ip blacklist
wget -qO - http://infiltrated.net/blacklisted|awk '!/#|[a-z]/&&/./{print "iptables -A INPUT -s "$1" -j DROP"}'

PS1='\[\033[1;30m\][\[\033[1;34m\]\u\[\033[1;30m\]@\[\033[0;35m\]note9s\[\033[1;30m\]] \[\033[0;36m\]\w \[\033[1;30m\]\$\[\033[0m\]'


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