如何生成随机字符串？

#1 楼

tr -dc A-Za-z0-9 </dev/urandom | head -c 13 ; echo ''

tr -dc 'A-Za-z0-9!"#$%&'\''()*+,-./:;<=>?@[\]^_`{|}~' </dev/urandom | head -c 13  ; echo

LC_ALL=C tr -dc 'A-Za-z0-9!"#$%&'\''()*+,-./:;<=>?@[\]^_`{|}~' </dev/urandom | head -c 13 ; echo

#2 楼

openssl rand -base64 12

openssl rand -hex 12

#3 楼

geek@liv-inspiron:~$ pwgen 13 7
Eu7Teadiphaec giepahl3Oyaiy iecoo9Aetaib4 phaiChae6Eivi athoo3igee8Co
Iphu4ufeDeelo aesoYi2lie9he 

geek@liv-inspiron:~$ pwgen -s 13 7
eAfycrPlM4cYv 4MRXmZmyIVNBp D8y71iqjG7Zq7 FQRHcserl4R8O yRCUtPtV3dsqV
0vJpp2h0OrgF1 QTp7MKtJyTrjz 

geek@liv-inspiron:~$ gpw 7 13
sreepoidahsas
risadiestinge
ntodynesssine
deodstestress
natinglumperm
riasigentspir
enderiferback

#4 楼

cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 10 | head -n 1

#5 楼

< /dev/urandom tr -cd "[:print:]" | head -c 32; echo

#6 楼

shuf -zer -n20  {A..Z} {a..z} {0..9}

#7 楼

$ echo $RANDOM | tr '[0-9]' '[a-z]'
bfeci
$ echo $RANDOM | tr '[0-9]' '[a-z]'
cijjj

#8 楼

 xxd -l16 -ps /dev/urandom
 

#9 楼

apg -MSNCL -m 5 -x 10

@OpVeyhym9
3:Glul
3DroomIc?
hed&Os0
NefIj%Ob3
35Quok}

#10 楼

tr -dc A-Za-z0-9 < /dev/urandom | dd bs=100 count=1 2>/dev/null

LC_ALL=C tr -dc A-Za-z0-9 </dev/urandom | dd bs=100 count=1 2>/dev/null

#11 楼

md5pass [password] [salt]

md5pass word

$.MUittVW$j.XDTF1QRnxqFdXRUiSLs0

#12 楼

#13 楼

shuf --random-source=/dev/urandom --repeat --head-count=20 file_with_characters | tr --delete '\n'

shuf --random-source=/dev/urandom --repeat --head-count=7 file_with_words | tr '\n' ' '

#14 楼

set="abcdefghijklmonpqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
n=6
rand=""
for i in `seq 1 $n`; do
    char=${set:$RANDOM % ${#set}:1}
    rand+=$char
done
echo $rand

#15 楼

$ cat /dev/urandom | base64 | head -n 1 |tr -dc '[:alnum:]' |cut -c -13
b0R55751vWW9V

$ cat /dev/urandom | base64 | head -n 1 |tr -dc '[:alnum:]' |cut -c -24
WFBhVHuKbrnRhd5kdWXPzmZG

$ cat /dev/urandom | base64 | head -n 1 |tr -dc '[:alnum:]' | tr -d '0O1l'|cut -c -24
JuCphwvhrhppD9wVqfpP2beG

#16 楼

base64     < /dev/urandom | dd bs=1k count=1

base64 -w0 < /dev/urandom | dd bs=1k count=1

#17 楼

cat /dev/urandom | tr -cd [:graph:]|head -c 16

jT@s_Nx]gH<wL~W}

7ck%G7'|f&}_8(]s
<?*]E.CG[NB'gK#A
:tF-WPTOa3!i7S(h
2xy(>=%3=Kb1B$`6
*98Lf{d?Jzb}6q1\
E7uCEAN2Hz]]y|5*

cat /dev/urandom |base64 -w 0|fold -w 16|head -6

rJqYxYZLOTV+A45w
PUKQ+BoBf6yfZw5m
+LRfpsN9CsLRiN8V
yMS6zDpL6NHmG17s
yTUWPG7Rum97schi
cognvjVwaKaAyPRK

#18 楼

musl64 [~]$ secpwgen
USAGE: secpwgen <-p[e] | -A[adhsy] | -r | -s[e]> N

PASSPHRASE of N words from Diceware dictionary
  -p    generate passphrase
  -pe   generate enhanced (with symbols) passphrase

SKEY PASSWORD of N words from S/Key dictionary
  -s    generate passphrase
  -se   generate enhanced (with symbols) passphrase

ASCII RANDOM of N elements (at least one option MUST be present)
  -A    Each letter adds the following random elements in output:
    a    alphanumeric characters
    d    decimal digits
    h    hexadecimal digits
    s    special characters
    y    3-4 letter syllables

RAW RANDOM
  -r    output BASE64 encoded string of N random BITS
  -k    output koremutake encoding of N random BITS

musl64 [~]$ secpwgen -Aas 13
----------------
WK5#*V<]M3<CU ;ENTROPY=67.21 bits
----------------
INFO: destroying random number generator.
INFO: zeroing memory.

musl64 [~]$ secpwgen -Aa 13
----------------
GP0FIEBM9Y3BT ;ENTROPY=67.21 bits
----------------
INFO: destroying random number generator.
INFO: zeroing memory.

musl64 [~]$ secpwgen -p 5
----------------
wq seen list n8 kerr  ;ENTROPY=65.00 bits
----------------
INFO: destroying random number generator.
INFO: zeroing memory.

musl64 [~]$ secpwgen -r 512
----------------
h62lL7G4gwh3/j9c7YteQvVXoqJrQKKPWVR3Lt7az36DcfWZWtUgBT19iwmJBwP4UahNzPe7qYD7OcklUFpCzQ== ;ENTROPY=512.00 bits
----------------
INFO: destroying random number generator.
INFO: zeroing memory.

#19 楼

shlibs str005 50 -p -xd

#20 楼

LC_CTYPE=C tr -dc A-Za-z0-9 < /dev/urandom | head -c 32

#21 楼

 import random # import random library  
passFile = open("passwords.txt", 'w') # create file passwords.txt
passNum = int(input("Number of passwords: ")) # get number of  passwords
passLength = int(input("Password length: ")) # get length of passwords  
for i in range(passNum):
    password = "" # reset password
    for i in range(passLength):
        num = random.randint(65, 122) # get random number
        while num in range(91, 97): # Don't include punctuation
            num = random.randint(65, 122)
        password += chr(num) # add character to current password 
    passFile.write(password + "\n") # add current password to file  
passFile.close() # close file
 

#22 楼

date +%s | sha256sum | base64 | head -c 12

#23 楼