10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Need to use dd to generate a large file from a sample file of random data. This is because I don't have /dev/urandom.
I create a named pipe then:
dd if=mynamed.fifo do=myfile.fifo bs=1024 count=1024
but when I cat a file to the fifo that's 1024 random bytes:
cat randomfile.txt >... (7 Replies)
Discussion started by: Devyn
7 Replies
2. Shell Programming and Scripting
Hello friends,
I have a TXT file with 300 lines in it. I need to shuffle all the lines (randomly) so that they get into different order. Can anyone pls provide easy way, if any?
I got it done by doing this below but I see it very lengthy/inefficient way.
call random function to generate... (2 Replies)
Discussion started by: prvnrk
2 Replies
3. Shell Programming and Scripting
hello, here is an example:
9.07
9.05
0.00
2.28
0.00
0.08
1.93
3.62
10.97
12.03
12.03
0.00
2.73
0.00
0.07 (3 Replies)
Discussion started by: Baron1
3 Replies
4. UNIX for Dummies Questions & Answers
Hello
Could you please help me to find a code that can randomly select 1224 lines from a file of 12240 and make tn output with 1224 line each.
my input is txt file with 12240 lines like :
13474 999003507 0 0 2 -9
13475 999003508 0 0 2 -9
13476 999003509 0 0 1 -9
13477 999003510 0 0 1 -9
... (7 Replies)
Discussion started by: biopsy
7 Replies
5. Shell Programming and Scripting
How to remove x lines form top and y lines form bottom.
This works, but like awk only cat file | head -n-y | awk 'NR>(x-1)'
so remove last 3 lines and 5 firstcat file | head -n-3 | awk 'NR>4' (5 Replies)
Discussion started by: Jotne
5 Replies
6. Shell Programming and Scripting
I have a file that needs to be parsed into multiple files every time there line contains a number 1. the problem i face is the lines are random and the file size is random. an example is that on line 4, 65, 187, 202 & 209 are number 1's so there has to be file breaks between all those to create 4... (6 Replies)
Discussion started by: darbs121
6 Replies
7. Shell Programming and Scripting
OK, I am stumpped. I have this shell Script that I want to randomly select a file with the extention of .sct. Then using a portion of its file name select the six related .mot files. Then move them all to another folder. I also need a user input form for the number of .SCT files to randomly select... (6 Replies)
Discussion started by: stak1993
6 Replies
8. Shell Programming and Scripting
Hi
i am writing a cron job. in this script i need to delete some line which is match with some pattern.
following code i written for deletion
sed '1,'$Max_LIneNo' d' myfile.txt >tempfile.tmp
mv tempfile.tmp myfile.txt
this command is working fine but the problem is that after this... (5 Replies)
Discussion started by: Himanshu_soni
5 Replies
9. Shell Programming and Scripting
Hi,
I have a data file with millions of record (N). Each record was saved in 4 lines. So there are total of NX4 lines in the data file.
For Example:
Host1
a
b
c
d
Host2
e
f
g
h
Host3
i
j
k (2 Replies)
Discussion started by: phoeberunner
2 Replies
10. Shell Programming and Scripting
Hi,
Could some one help me to get rid of visually blank lines from a file using shell or awk or sed (on Solaris machine)?
When I use grep grep -v ^$ inputfile >outputfile it removes some blank lines.. but it seems some tab plus space balnk lines remains.
thaen I used "grep -v '^]*$' ... (1 Reply)
Discussion started by: hadsuresh
1 Replies