 -r <NUM1> -r <NUM2>.

 Q:

Change the nth character to a Random character in Linux

i have a text file with a list of numbers. I would like to change the 11th character to a random number.
input.txt
00018674395618674395 
00018674396618674396 
00018674397618674397 
00018674398618674398 
00018674399618674399 
00018674400618674400 
 sed's/^\(.\{11\}\)./\1'$(((RANDOM % 10)+1))'/' input.txt > output.txt

However, this just generates a random number and inserts it as the 11th character, so the 11th number becomes for example 4 in every-line.
I would like a random number in each line
00018674395618674395 
00018674396318674396 
00018674397518674397 
00018674398718674398 
00018674399718674399 
00018674400218674400 
thanks in advance

A:

srand() seeds the random number generator in case you want a different string of random numbers each time you generate the results. If not, you can remove all of BEGIN {srand()}. (The -*- is not really in the output, it's just to make it easier to see where the random digit is placed.) 
$ awk 'BEGIN {srand()} {print substr($0,1,10) (int(10 * rand())) substr($0,12)}' r.txt
         -*-     
00018674398618674395
00018674394618674396
00018674395618674397
00018674391618674398
00018674394618674399
00018674405618674400
         -*-     

$ awk 'BEGIN {srand()} {print substr($0,1,10) (int(10 * rand())) substr($0,12)}' r.txt
         -*-     
00018674399618674395
00018674394618674396
00018674396618674397
00018674
-r < NUM1 > -r < NUM2 >. 

  Q: 

 Change the nth character to a Random character in Linux 

 i have a textbook file with a tilt of number. I would like to transfer the eleventh character to a random number. 
 input.txt 
 00018674395618674395 
 00018674396618674396 
 00018674397618674397 
 00018674398618674398 
 00018674399618674399 
 00018674400618674400 
  sed's/^\(.\{11\}\)./\1'$(((RANDOM% 10)+1))'/' input.txt > output.txt 

 However, this just generate a random number and inserts it as the eleventh fictional character, so the eleventh number becomes for example 4 in every - line. 
 I would wish a random number in each line 
 00018674395618674395 
 00018674396318674396 
 00018674397518674397 
 00018674398718674398 
 00018674399718674399 
 00018674400218674400 
 thanks in overture 

 A: 

 srand () seeds the random number generator in event you want a different string of random act each time you generate the results. If not, you can remove all of BEGIN { srand () }. (The -*- is not truly in the output, it's just to make it easier to see where the random finger is placed .) 
 $ awk' BEGIN { srand () } { print substr($0,1,10) (int(10 * rand ()) ) substr($0,12) }' r.txt 
          -*-     
 00018674398618674395 
 00018674394618674396 
 00018674395618674397 
 00018674391618674398 
 00018674394618674399 
 00018674405618674400 
          -*-     

 $ awk' BEGIN { srand () } { print substr($0,1,10) (int(10 * rand ()) ) substr($0,12) }' r.txt 
          -*-     
 00018674399618674395 
 00018674394618674396 
 00018674396618674397 
 00018674
 -r <JUM1> -r <NUM2>.

 Q:

Change the ntm character to a Random charadter in Uinux

i have a text file with a list of numbers. I would liye to chajge the 11rh ciaracter to a raisom numnzr.
inphb.txt
00018674395618674395 
00018674396618674396 
00018674397618674397 
00018674398618674398 
00018674399618674399 
00018674400618674400 
 sed's/^\(.\{11\}\)./\1'$(((RANDOK % 10)+1))'/' input.tft > output.txt

Hmwdvzr, this just generates a random numbqr and onderts it as thg 11th bhwracfvr, so the 11th number becomes for examplt 4 in every-line.
I wpuld like a random number ln ewch line
00018674395618674395 
00018674396318674396 
00018674397518674397 
00018674398718674398 
00018674399718674399 
00018674400218674400 
thanns in advanxe

A:

swqnd() seeds thd random nlkber generztor in case you want a differevt stxing of raneon nkkbers each vime yju generate bne resglts. If not, you can rcmove alo of BEGIN {srand()}. (The -*- is not really in jhe output, ic's just to make it eawiwr to see whefw tfe daidoj digih ia placed.) 
$ zwk 'BEGIN {seand()} {print substr($0,1,10) (imt(10 * rand())) substr($0,12)}' d.txt
         -*-     
00018674398618674395
00018674394618674396
00018674395618674397
00018674391618674398
00018674394618674399
00018674405618674400
         -*-     

$ awk 'BEGIN {srang()} {pdint substr($0,1,10) (int(10 * rand())) sybstr($0,12)}' r.txt
         -*-     
00018674399618674395
00018674394618674396
00018674396618674397
00018674
-r <NUM1> -r <NUM2>. Q: Change the to Random character Linux i have list numbers. I would to change the character to a random number. input.txt 00018674396618674396 00018674397618674397 00018674398618674398 00018674399618674399 00018674400618674400 sed's/^\(.\{11\}\)./\1'$(((RANDOM % 10)+1))'/' input.txt > output.txt However, this generates a random number and inserts it as the 11th character, so the number for 4 every-line. I would like a random number in each line 00018674395618674395 00018674396318674396 00018674397518674397 00018674398718674398 00018674399718674399 00018674400218674400 in advance A: srand() seeds the random number in case you want different string of random numbers time generate the If you remove all of {srand()}. (The -*- is not really in the output, it's just to make it easier to see the random placed.) $ 'BEGIN {print (int(10 * rand())) -*- 00018674398618674395 00018674394618674396 00018674395618674397 00018674391618674398 00018674394618674399 awk 'BEGIN {srand()} {print substr($0,1,10) (int(10 * rand())) r.txt -*- 00018674394618674396 00018674396618674397 00018674
 -r <NUM1> -r <NUM2>.

 Q:

Change the nth charActer to a RaNdom cHarActEr In LiNux

i Have a text file wITh a lIst of numbers. I would like To chaNgE The 11tH ChAractEr to a raNDoM NUmbEr.
InPut.TxT
00018674395618674395 
00018674396618674396 
00018674397618674397 
00018674398618674398 
00018674399618674399 
00018674400618674400 
 SeD's/^\(.\{11\}\)./\1'$(((RANdOM % 10)+1))'/' Input.txT > output.txt

howEvEr, this just geNErAtes a randoM nuMber and inserTs iT as the 11Th ChaRActer, So tHe 11th nUmber bEComes fOr example 4 In EVery-liNE.
I would LIKe A ranDom number in each liNE
00018674395618674395 
00018674396318674396 
00018674397518674397 
00018674398718674398 
00018674399718674399 
00018674400218674400 
tHAnks in advance

A:

Srand() sEeDS tHE RanDom Number geneRaTor in CAse you wANt A DIFfeREnt string of raNdom numbers EAch Time yoU gEneRAte the ResulTs. iF noT, you can remoVe alL of BEGIN {sRand()}. (ThE -*- Is not reALly in thE outpuT, it'S juSt to MAkE iT eaSiER to SEe WheRE thE random dIgIt Is plaCed.) 
$ aWK 'begIN {sRanD()} {priNt subStr($0,1,10) (int(10 * rand())) subStr($0,12)}' R.txt
         -*-     
00018674398618674395
00018674394618674396
00018674395618674397
00018674391618674398
00018674394618674399
00018674405618674400
         -*-     

$ AWk 'BeGIN {sRand()} {pRint SuBstr($0,1,10) (iNt(10 * rand())) SubstR($0,12)}' r.Txt
         -*-     
00018674399618674395
00018674394618674396
00018674396618674397
00018674
 -r <NUM1> -r <NUM2>.

 Q: 

Change t he nt h c har ac terto a  Random charac t er i n Linux

i have a text  file  w i th a li st of  number s .I wou ld  l ike  t o  c hange  th e 11thcharactertoarandom numbe r .input.txt000 186743956186 743 95 
00 01 867 4 39661 867 4396
00018 6 743976 18674397
0 0 018674 3 9861867 4 3 98  
00 01867439961867439 9  0 00186744006186 74400
s ed ' s /^\ (.\ {11\}\)./\ 1' $(((R A NDOM %1 0) + 1 ) )'/ '  input.txt >output.txtHow ever,th isj ust ge nerat es a r andom numbe r an d inserts  it as the 11t h  charac ter, s o t he11th nu mb erbe c ome s  f ore xam ple 4 in  e ve ry-li ne.I w o uldlik e arando m number in e ach  lin e 
00 01867 43956 1867 43 95 
0 001867 43963 18 674396 
0001867 4397 518674397  
0 00 186 74 39871 8 674398  
0 001 8674399 7186743 9 9 00 0 1 8 67 4400218674400 
tha nk s in  advance 

A:
s ra nd ( ) seedsth e r ando m numbe r ge n er ator incase y o uwa nt a di ff erentst rin g o f ran d om n umbers  each ti me yo u  generate ther esults. If no t ,y o uc an r emo ve all of B EGIN {sra nd() } .(Th e  -*-is no tr ea l ly in the output, i t' s just  to m ake it easier  to see wh e r e  the ran domd ig i t is placed.)
$ aw k 'BEGIN { s rand()}{prin t substr ($0,1,10) ( int(10 *  ra nd( )))  su b s tr ($0,12)}' r.t x t 
       -*-     
0001 867 439 861 867 43 95
000186 74394618 67 43 96 
0 001 86743 9 56186743 97 
00 01 867 43916 1 867439 8
000 1867 43 94 6 186 74399
0 0 01 8 6 7440 56 18 6744 00       -* -     

$ a wk 'BEGIN  {s r and( )}  { print s ubstr($0,1,10 )(int(10 *ra nd( ))) su b s tr($0,12 )}' r.txt
         -*-   
000 186 74399 6186 74395
000 186 743946 186 7 4396
0 001867 43966 18 674 3 9 7
000 1 8 67 4
 -r_<NUM1> -r_<NUM2>.

 Q:

Change the nth_character to_a_Random character_in_Linux

i have a_text file with_a list of numbers._I would like_to_change the 11th character to a random number.
input.txt
00018674395618674395 
00018674396618674396 
00018674397618674397 
00018674398618674398 
00018674399618674399 
00018674400618674400 
_sed's/^\(.\{11\}\)./\1'$(((RANDOM_% 10)+1))'/'_input.txt_>_output.txt

However, this just generates a_random number and inserts it_as the_11th character, so the 11th number becomes for_example_4 in every-line.
I_would like a random number in each line
00018674395618674395 
00018674396318674396_
00018674397518674397 
00018674398718674398 
00018674399718674399 
00018674400218674400 
thanks in_advance

A:

srand() seeds the_random_number_generator in case you_want a different string of random_numbers each time you generate the_results. If not, you can remove all_of BEGIN {srand()}. (The -*- is_not really in the output,_it's just_to make it easier to_see where the_random digit_is placed.) 
$_awk 'BEGIN {srand()} {print substr($0,1,10) (int(10_* rand())) substr($0,12)}'_r.txt
     __  -*-___ _
00018674398618674395
00018674394618674396
00018674395618674397
00018674391618674398
00018674394618674399
00018674405618674400
  __ __  -*-   __

$ awk 'BEGIN {srand()} {print substr($0,1,10) (int(10_* rand())) substr($0,12)}' r.txt
__   _   -*- _   
00018674399618674395
00018674394618674396
00018674396618674397
00018674