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remove ^M characters from file using sed

removing ^M characters from file with sed
This is sample output - yours may be different.
2

sed 's/\r//g' < input.txt > output.txt

aysadk · 2019-04-20 22:27:35 1
Check host port access using only Bash:
This is sample output - yours may be different.
0

s="$(cat 2>/dev/null < /dev/null > /dev/tcp/${target_ip}/${target_port} & WPID=$!; sleep 3 && kill $! >/dev/null 2>&1 & KPID=$!; wait $WPID && echo 1)" ; s="${s:-0}"; echo "${s}" | sed 's/0/2/;s/1/0/;s/2/1/'

wuziduzi · 2019-04-19 17:13:38 0
Network Discover in a one liner
This is sample output - yours may be different.
0

nmap -sn 192.168.1.0/24 -oG - | awk '$4=="Status:" && $5=="Up" {print $0}'|column -t

wuziduzi · 2019-04-19 17:12:00 0
Show your current network interface in use
This is sample output - yours may be different.
0

route | grep -m1 ^default | awk '{print $NF}'

wuziduzi · 2019-04-19 17:03:49 0
Create a file and manipulate the date
This is sample output - yours may be different.
1

touch -d '-1 year' /tmp/oldfile

wuziduzi · 2019-04-19 17:01:16 0
Switch all connected PulseAudio bluetooth devices to A2DP profile

Tries to switch all audio devices to the A2DP profile for optimal sound quality. Useful for bluetooth speakers and headphones that always power up in HSP/HFP mode. Note however that this command is only a shorthand for the GUI, so it cannot fix stubborn BT controllers that leave your device stuck in HSP mode until a manual re-coupling.
This is sample output - yours may be different.
0

for card in $(pacmd list-cards | grep 'name: ' | sed 's/.*<$.*$>.*/\1/'); do pacmd set-card-profile $card a2dp_sink; done

lordtoran · 2019-04-18 18:01:45 0
check web server port 80 response header
This is sample output - yours may be different.
0

curl -I <IPaddress>

maxo · 2019-04-18 06:38:59 0
change user password one liner

change user password one liner
This is sample output - yours may be different.
-2

echo -e "linuxpassword\nlinuxpassword" | passwd linuxuser

aysadk · 2019-04-17 18:12:30 2
check web server port 80 response header

check web server port 80 response header Show Sample Output
This is sample output - yours may be different.
```
HTTP/1.1 200 OK
Server: Apache 2.4.1
Date: Wed, 17 Apr 2019 17:56:50 GMT
Content-Type: text/html
Content-Length: 307
Last-Modified: Sat, 14 Jan 2017 22:01:22 GMT
Connection: close
ETag: "587a9fb2-133"
X-Frame-Options: SAMEORIGIN
Accept-Ranges: bytes
```
0

(echo -e 'GET / HTTP/1.0\r\n\r\n';) | ncat <IPaddress> 80

aysadk · 2019-04-17 18:09:28 0
command shell generate random strong password

shell generate random strong password Show Sample Output
This is sample output - yours may be different.
```
NXuc2VjRcOhW7zyQDBhH
```
1

len=20; tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${len} | xargs

aysadk · 2019-04-16 20:20:46 1
Use was ec2 describe instances to retrieve IAM roles for specific ec2 tag to css list

This allows you to get all instance profiles (roles) for a given set of tags. Lists it in CSV Show Sample Output
This is sample output - yours may be different.
```
"arn:aws:iam::111114168247:instance-profile/Yourole-Instance-Profile,i-01ab14691695a0fa1"
```
0

aws ec2 describe-instances --region us-east-1 --filters "Name=tag:YourTag,Values=YourValue" | jq '.["Reservations"]|.[]|.Instances|.[]|.IamInstanceProfile.Arn + "," +.InstanceId'

symgryph · 2019-04-15 16:33:41 1
See n most used commands in your bash history

You can append these commands to the bottom of the history file to access them easier with the Up key: sort ~/.bash_history|uniq -c|sort -n|tail -n 10|tr -s " "|cut -d' ' -f3- >> ~/.bash_history
This is sample output - yours may be different.
1

sort ~/.bash_history|uniq -c|sort -n|tail -n 10

knoppix5 · 2019-04-15 14:20:00 0
Remove multiple entries of the same command in .bash_history with preserving the chronological order

Only the first appearance of a repeated command in the history will be kept. Otherwise, if you prefer to keep last occurrence of a repeated command then maybe you can achieve that by including reverse input/output i.e with 'tac' command in expression above. To see statistics of removed repeated commands: diff --suppress-common-lines -y ~/.bash_history.bak ~/.bash_history|uniq -c|sort -n|tr -s " "|sed '/^ 1/d'|grep '<'
This is sample output - yours may be different.
0

cp -a ~/.bash_history ~/.bash_history.bak && perl -ne 'print unless $seen{$_}++' ~/.bash_history.bak >~/.bash_history

knoppix5 · 2019-04-15 12:39:09 0
To create files with specific permission:
This is sample output - yours may be different.
2

install -b -m 777 /dev/null file.txt

wuziduzi · 2019-04-13 02:52:35 0

Determining if a String Contains a Substring in Bash

Show Sample Output

stringContains() { [ -z "${2##*$1*}" ] && [ -z "$1" -o -n "$2" ]; }

mikhail · 2019-04-12 20:51:27 0

SSH Copy ed25519 key into your host
This is sample output - yours may be different.
1

ssh-copy-id -i your-ed25519-key user@host

fromthestone · 2019-04-11 02:23:46 0
Patator: A Hydra brute force alternative
This is sample output - yours may be different.
0

patator ssh_login host=192.168.1.16 port=22 user=FILE0 0=user.lst password=FILE1 1=pass.lst -x ignore:mesg='Authentication failed.'

ioshield · 2019-04-10 17:42:13 0
Calculate the distance between two geographic coordinates points (latitude longitude)

The Haversine formula determines the great-circle distance between two points on a sphere given their longitudes and latitudes. Show Sample Output
This is sample output - yours may be different.
```
# input (format: latitude1 longitude1 latitude2 longitude2) :

h -22.9077611 -43.1259322 -22.9121089 -43.2301558

# output:
10.6889

# So, the distance between -22.9077611 (latitude),-43.1259322 (longitude) and -22.9121089,-43.2301558 (latitude,longitude) is 10,688.9 meters (10.6889 kilometers)
```
2

h(){ echo $@|awk '{d($1,$2,$3,$4);} function d(x,y,x2,y2,a,c,dx,dy){dx=r(x2-x);dy=r(y2-y);x=r(x);x2=r(x2);a=(sin(dx/2))^2+cos(x)*cos(x2)*(sin(dy/2))^2;c=2*atan2(sqrt(a),sqrt(1-a)); printf("%.4f",6372.8*c);} function r(g){return g*(3.1415926/180.);}';}

mikhail · 2019-04-04 01:34:36 1
worse alternative to <ctrl+r>

worse alternative to ctrl+r: grep the history removing duplicates without sorting (case insensitive search). Show Sample Output
This is sample output - yours may be different.
```
history # history sample for reference:
1 echo "duplicate"
2 awk --help
3 echo "duplicate"
4 echo "ctrl+r is better"

# input:
memo echo

# output:
echo "duplicate"
echo "ctrl+r is better"
```
1

function memo() { history | grep -i $@ | awk '! seen[$2]++'; }

mikhail · 2019-04-04 00:54:43 0
du command without showing other mounted file systems
This is sample output - yours may be different.
1

du -h --max-depth=1 --one-file-system /

Ryangillan · 2019-04-02 22:47:24 0
Remove all matches containing a string until its next space

Remove all arguments related to linux kernel from a list which uses space as item separator.
This is sample output - yours may be different.
-1

sed 's/linux-[^ ]* \{0,1\}//g' /path/to/file

bugmenot · 2019-04-01 19:35:47 1

Enable Synology Debug mode on shell

Added gdb & other usefull stuff Show Sample Output

sudo synogear install && sudo su

dbiesecke · 2019-03-30 03:45:12 1

Bitcoin Brainwallet Private Key Calculator
This is sample output - yours may be different.
0

$ bitgen hex 12312381273918273128937128912c3b1293cb712938cb12983cb192cb1289b3 info

Label10 · 2019-03-27 21:25:29 1
Set pcap & SUID Bit for priv. network programs (like nmap)
This is sample output - yours may be different.
2

export BIN=`which nmap` && sudo setcap cap_net_raw,cap_net_admin+eip $BIN && sudo chown root $BIN && sudo chmod u+s $BIN

dbiesecke · 2019-03-27 16:04:07 0
Application network trace based on application name

This command takes an application name as an argument and then it will listen to the tcp traffic and capture packets matching the process Id of the application. The output shows: local address / local port / Remote Address / Remote port / State / Owning Process ID Show Sample Output
This is sample output - yours may be different.
```
192.168.0.1                      50306     8.8.8.8                       443        Established Internet       21128
```
1

while(1 -eq 1 ) {Get-Process -Name *APPNAME* | Select-Object -ExpandProperty ID | ForEach-Object {Get-NetTCPConnection -OwningProcess $_} -ErrorAction SilentlyContinue }

guillaume1306 · 2019-03-26 09:44:57 1
1 2 3 > Last ›

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Run the last command as root

Same as `sudo !!`. If you do not have permission to be sudo or sudo does not installed on your system, you can use this.

Summarize the number of open TCP connections by state

Useful for checking the number and state of TCP connections.

Command to logout all the users in one command

It's only to logout all other user's except "root"

Use md5sum to check your music and movie files. Also use diff.

This is a beginning script. You can create a file with > filename. You can also use diff to compare output run at different times to verify no change in your files. I apologize in advance if this is too simple. For some it should be a start.

Fetch the current human population of Earth

Create a directory and go inside it

$_ expands to the last argument of the last command that was executed

Fix Ubuntu's Broken Sound Server

Ever since the switch to pulseaudio, Ubuntu users including myself have found themselves with no sound intermittently. To fix this, just use this command and restarts firefox or mplayer or whatever.

silent/shh - shorthand to make commands really quiet

Sometimes I just want to run a command quietly but all that keyboard shifting makes my fingers hurt. This little function does the job eg.: $ if shh type less; then PAGER=less; fi

Short Information about loaded kernel modules

Liked command 4077 so I improved it, by doing all text manipulation with sed. "Run this as root, it will be helpful to quickly get information about the loaded kernel modules." THX mohan43u

Run a command as root, with a delay

$ sleep 1h ; sudo command or $ sudo sleep 1h ; sudo command won't work, because by the time the delay is up, sudo will want your password again.

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