10-05-2011
Corona wrote the solution to create 1000 output files.
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1. Shell Programming and Scripting
Hi,
I"m writing a script to store all the contents of multiple files with different file names into one single file.
I am giving in only last modified date of file in a folder. The below script gives a list of just one file based on the input date i give which is taken as string variable. I... (2 Replies)
Discussion started by: ashrocks
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2. UNIX for Dummies Questions & Answers
I would like to write a for loop that does the following:
I have a file called X.txt and other files called 1.txt,2.txt, .....,1000.txt.
I want to substitute the 6th column of the file X.txt with 1.txt and store the output as X.1. Then I want to do the same with X.txt and 2.txt and store the... (1 Reply)
Discussion started by: evelibertine
1 Replies
3. Shell Programming and Scripting
I want to write a Perl script that manipulates multiple files. In the directory, I have files 250.*chr$.ped where * is from 1 to 1000 and $ is from 1-22 for a total of 22 x 10,000 = 22,000 files.
I want to write a script that only manipulates files 250.1chr*.ped where * is from 1 to 22.... (10 Replies)
Discussion started by: evelibertine
10 Replies
4. UNIX for Dummies Questions & Answers
I have 100 data files labelled 250.1.txt through 250.100.txt. The second column of the data files partially match (there is about %90 overlap). Each data file has 4 columns.
I want the merge all these text files by the matching values in the second column. In the output, the first column should... (1 Reply)
Discussion started by: evelibertine
1 Replies
5. UNIX for Dummies Questions & Answers
I have multiple input files that I want to manipulate using a shell script. The files are called 250.1 through 250.1000 but I only want the script to manipulate 250.300 through 250.1000. Before I was using the following script to manipulate the text files:
for i in 250.*; do
|| awk... (4 Replies)
Discussion started by: evelibertine
4 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I have 1000 files names data1.txt through data1000.txt inside a folder. I want to write a script that will take each first line from the files and write them as output into a new file. How do I go about doing that? Thanks! (2 Replies)
Discussion started by: evelibertine
2 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I have 1000 text files in a folder that are labeled data1.txt all the way to data1000.txt. I want to write a small script that manipulates the text files in this way:
(1) cut the 2nd and 9th columns of the text files
(2) sort by the numerical value in the 9th column
(3) then save the rows... (3 Replies)
Discussion started by: evelibertine
3 Replies
8. UNIX for Dummies Questions & Answers
Hi
I have 1000 files labelled data1.txt through data1000.txt. I want to write a script that prints out the number of lines in each txt file and outputs it in the following format:
Column 1: number of data file (1 through 1000)
Column 2: number of lines in the text file
Thanks! (2 Replies)
Discussion started by: evelibertine
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9. Shell Programming and Scripting
Hi Everybody,
I'm a newbie to shell scripting, and I'd appreciate some help. I have a bunch of .txt files that have some unwanted content. I want to remove lines 1-3 and 1028-1098.
#!/bin/bash
for '*.txt' in <path to folder>
do
sed '1,3 d' "$f";
sed '1028,1098 d' "$f";
done
I... (2 Replies)
Discussion started by: BabyNuke
2 Replies
10. Shell Programming and Scripting
while IFS= read -r line
do
# sV for version detection
nmap -T4 -Pn -v -sS "$line" > "text/$line"
done < <(grep '' $file)
Hi,
where line represents the IP.
I am using NMAP to do scanning.
How can I set to execute that command in the loop several concurrently at a time instead of one... (5 Replies)
Discussion started by: alvinoo
5 Replies
HEAD(1) User Commands HEAD(1)
NAME
head - output the first part of files
SYNOPSIS
head [OPTION]... [FILE]...
DESCRIPTION
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With
no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-c, --bytes=[-]K
print the first K bytes of each file; with the leading '-', print all but the last K bytes of each file
-n, --lines=[-]K
print the first K lines instead of the first 10; with the leading '-', print all but the last K lines of each file
-q, --quiet, --silent
never print headers giving file names
-v, --verbose
always print headers giving file names
--help display this help and exit
--version
output version information and exit
K may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P,
E, Z, Y.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report head translation bugs to <http://translationproject.org/team/>
AUTHOR
Written by David MacKenzie and Jim Meyering.
COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for head is maintained as a Texinfo manual. If the info and head programs are properly installed at your site, the
command
info coreutils 'head invocation'
should give you access to the complete manual.
GNU coreutils 8.22 June 2014 HEAD(1)