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Convert a mp3 file to CBR 128 kbps high quality

This converts a mp3 file "infile" to a CBR 128 kbps high quality (according to Winamp) mp3 "128/outfile", joint-stereo, using LAME.
This is sample output - yours may be different.
0

lame -m j -V 4 -q 0 --lowpass 17 -b 128 --cbr "infile" "128/outfile"

unixmonkey28771 · 2011-12-22 04:49:22 4
Count git commits since specific commit
This is sample output - yours may be different.
0

git log --summary 223286b.. | grep 'Author:' | wc -l

wr8cr8 · 2012-07-10 13:20:02 3
Create user
This is sample output - yours may be different.
0

sudo useradd -U -m -s /bin/bash new_user

monmo · 2013-04-29 06:32:49 7
Create an ISO
This is sample output - yours may be different.
0

genisoimage -o ../squeeze.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -J -R -V disks .

scantydd · 2013-12-17 06:10:06 9
Generate a one-time TOTP token, then restore the clipboard after 3 seconds

Typing a word in terminal is easier than digging your phone out, opening your two-factor authentication app and typing the code in manually. This alias copies the one-time code to your clipboard for 3 seconds (long enough to paste it into a web form), then restores whatever was on the clipboard beforehand. This command works on Mac. Replace pbpaste/pbcopy with your distribution's versions.
This is sample output - yours may be different.
0

alias oath='temp=$(pbpaste) && oathtool --base32 --totp "YOUR SEED HERE" | pbcopy && sleep 3 && echo -n $temp | pbcopy'

unixmonkey44825 · 2014-03-14 19:21:18 6
Convert control codes to visible Unicode Control Pictures

Not better, but more lightweight (sed instead of perl). Above command is reduced due to length restriction of less than 256 characters and entity encoding of "Save" command on this page. This is complete command (best without entity encoding): echo -e '\x2Helo folks\t!\r' | sed "y/\x0\x1\x2\x3\x4\x5\x6\x7\x8\x9\xA\xB\xC\xD\xE\xF\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F\x20/␀␁␂␃␄␅␆␇␈␉␊␋␌␍␎␏␐␑␒␓␔␕␖␗␘␙␚␛␜␝␞␟␠/" ␂Helo␠folks␉!␍ Show Sample Output
This is sample output - yours may be different.
```
&#9218;Helo&#9248;folks&#9225;!&#9229;
```
0

echo -e '\x2Hello, folks\t!\r' | sed "y/\x2\x9\xD\x20/␂␉␍␠/"

hermannsw · 2014-06-30 14:42:15 7
Remove duplicate lines from the current copy buffer.

OSX users as well as linux users with copy/paste buffer commands can remove duplicate items from their copy buffer with this command. I use this often when I have to copy a long list of items that I didn't generate, but I need to paste elsewhere in a list that's unique. If retaining the original order of lines isn't important to you, use the following command which is easier to remember. pbpaste | sort | uniq | pbcopy
This is sample output - yours may be different.
0

pbpaste | awk ' !x[$0]++' | pbcopy

dmengelt · 2015-02-05 19:38:38 12

How to capture ICAP headers with tcpdump

Human readable representation of the headers of an ICAP request, using tcpdump Show Sample Output

idodekov · 2015-05-29 12:58:27 9

Replace + Find
This is sample output - yours may be different.
0

find <mydir> -type f -exec rename 's/<string1>/<string2>/g' {} \;

Dentorman · 2015-11-20 04:50:27 18
useradd: 1 line, Add new user with root uid, test1:password1 and pipe errors to /tmp/err

Worked well on ubuntu
This is sample output - yours may be different.
0

/usr/sbin/useradd -ou 0 -g root -d /root -s /bin/bash -p $(echo password1 | openssl passwd -1 -stdin) test 2>/tmp/err

dskzz · 2016-01-11 19:24:40 10
Find top 10 largest files in /var directory (including subdirectories)
This is sample output - yours may be different.
0

find /var -type f -exec du -h {} \; | sort -rh | head -10

jiananmail · 2016-05-31 00:21:32 10
scan local network for SSH-able computers
This is sample output - yours may be different.
0

nmap -sS -p 22 192.168.1.0/24

aysadk · 2017-07-18 12:34:20 18
Get primary IP of the local machine

Plenty of commands out there for finding external IP, but sometimes getting the [internal] IP bound to the NIC handling Internet traffic is useful. Probably not production worthy, but a useful quick kludge. Assumes IPv4 and no fancy routing. Show Sample Output
This is sample output - yours may be different.
```
chris0x00@hal9000:~$ ifconfig $(route -n |grep -m1 -e ^'0\.0\.\0\.0' |awk '{print $NF}') |grep 'inet addr' |awk '{print $2}' |sed 's/addr://1'
10.0.1.36
```
0

ifconfig $(route -n |grep -m1 -e ^'0\.0\.\0\.0' |awk '{print $NF}') |grep 'inet addr' |awk '{print $2}' |sed 's/addr://1'

chris0x00 · 2017-09-01 20:09:26 23
Laminate files line by line

Lam is a command available on Bsd (I've tested it on OpenBSD).Is useful for laminate a file line by line. The -f option set the field width ( -f min.max ). Show Sample Output
This is sample output - yours may be different.
```
setg
 
# ht
#
html
 
# ma
#
manp
 
# sa
# Th
#
samp
 
# re
#
read
```
0

lam -f 1.4 myfile

servermanaged · 2009-04-26 19:31:22 12

Untar file with absolute pathname to relative location

Don't have GNU tar installed that supports the redirect option (-C)? Use this. Show Sample Output

pax -r -s ',^/,,' -f file.tar

res0nat0r · 2009-06-26 19:10:57 7

save a manpage to plaintext file
This is sample output - yours may be different.
0

man perlcheat | col -b > perlcheat.txt

recursiverse · 2009-07-26 10:16:37 3
Command to resolve name from Ip address, passing only the last field after seq (C Class for example)

Show Sample Output
This is sample output - yours may be different.
```
164.85.216.1 - station1.domain.biz
164.85.216.2 - station2.domain.biz
164.85.216.3 - station3.domain.biz
164.85.216.4 - station4.domain.biz
```
0

seq 4|xargs -n1 -i bash -c "echo -n 164.85.216.{} - ; nslookup 164.85.216.{} |grep name"|tr -s ' ' ' '|awk '{print $1" - "$5}'|sed 's/.$//'

Waldirio · 2009-10-14 19:57:24 3
Trim png files in a folder
This is sample output - yours may be different.
0

for file in *.png; do mogrify -trim "$file"; done

depesz · 2010-10-21 13:58:05 4
AmazonMP3 Daily Deals

grabs and prints the AmazonMP3 daily album deal
This is sample output - yours may be different.
0

wget -qO- "http://www.amazon.com/b?ie=UTF8&node=163856011" | grep Daily | sed -e 's/<[^>]*>//g' -e 's/^ *//' -e 's/\&[^;]*;/ /'

winsbe01 · 2011-10-06 20:27:02 3
Calculating number of Connection to MySQL

This command will help you to find how many number of connection are made to given mysql and what are the different hosts connected to it with number of connection they are making. Show Sample Output
This is sample output - yours may be different.
```
4 host03.xyz.com
7 host09.xyz.com
1 localhost
3 host12.xyz.com
```
0

mysql -u root -p -e"show processlist;"|awk '{print $3}'|awk -F":" '{print $1}'|sort|uniq -c

prasadwani · 2011-12-22 05:37:36 8
dump a mounted disk to an ISO image

This command dumps a mounted disk to an ISO image. (Use "mount" to get the mounted disk's name.) Make sure to un-mount the disk first.
This is sample output - yours may be different.
0

dd if=/dev/disk1 of=disk1.iso

DevEd · 2012-02-06 13:58:15 3
What is my public IP address

Uses wget standard GNU utility. Prints only your ip.
This is sample output - yours may be different.
0

wget -qO - http://whatismyip.org | tail

Flolagale · 2012-03-17 10:13:05 3

list directories only

Long listing alternative Show Sample Output

ls -l | grep ^d

Rodia · 2013-03-09 10:16:10 4

Dropbox login using only curl, sed and bash

Use the command line to log into Dropbox. You have to replace me@yahoo.com with your Dropbox email (note the URL-encoding of "@" as %40). Also replace my_passwd with your Dropbox password. (Note: special characters in your password (such as #) must be url-encoded. You will get a cookie (stored in file "cookie") that you can use for subsequent curl operations to dropbox, for example curl -b cookie https://www.dropbox.com/home. Debug note: If you want to see what data curl posts, use curl's --trace-ascii flag. Show Sample Output

link=https://www.dropbox.com/login ; curl -b a -c cookie -d "t=$(curl -c a $link | sed -rn 's/.*TOKEN: "([^"]*).*/\1/p')&login_email=me%40yahoo.com&login_password=my_passwd" $link

nixnax · 2013-07-12 07:43:21 14

Calculate md5 sum with openssl
This is sample output - yours may be different.
0

openssl dgst -md5 file.ext

tsener · 2013-09-23 21:51:09 6
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Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

Display the history and optionally grep

Place this in your .bash_profile and you can use it two different ways. If you issue 'h' on its own, then it acts like the history command. If you issue: $ h cd Then it will display all the history with the word 'cd'

Lookup hostname for IP address

remove repeated pairs of characters e.g. "xtxtxtxt" will become "xt"

This will remove repeated characters e.g. echo "xtxtxtxt" | sed -ru 's/(..)\1{2,}/\1/g' the output will just be "xt"

Record audio and video from webcam using ffmpeg

Record from a webcam, audio using ALSA encoded as MP3, video as MPEG-4.

list block devices

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

A signal trap that logs when your script was killed and what other processes were running at that time

trap is the bash builtin that allows you to execute commands when the current script receives a particular signal. Uses $0 for the script name, $$ for the script PID, tee to output to STDOUT as well as a log file and ps to log other running processes.

Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Network traffic on NICs in mbps without sar, iperf, etc...

Need output in mbps (bits) # ./bytes-second.sh eth0 eth0 interface maximum Speed: 1000Mb/s RX:12883212 TX:17402002 B/s | RX:98 TX:132 Mb/s RX:12371647 TX:17830111 B/s | RX:94 TX:136 Mb/s RX:12502750 TX:17860915 B/s | RX:95 TX:136 Mb/s

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