Why are you using an array for file2? I thought there was supposed to be a single file in both directories starting with the string that is the number before the first underscore in the name of the file selected in the first directory?
What output do you get when your run your script with tracing enabled:
This User Gave Thanks to Don Cragun For This Post:
Write a quick shell snippet to find all of the IPV4 IP addresses
in any and all of the files under /var/lib/output/*, ignoring
whatever else may be in those files. Perform a reverse lookup on
each, and format the output neatly, like "IP=192.168.0.1,
... (0 Replies)
I have a file with hundreds of records and I need to find those records that have three digits at the beginning and the same three digits at the end.
$GREP '\(\)\(\)\(\)\3\2\1'I
believe this is part of the script but I am not sure how to compare these 3 digits with the 3 digits at the end of... (2 Replies)
Hi there, im sure this is really simple but i have some strings like this
e1000g123001
e1000g0
nge11101
nge3and i want to create two variables ($DRIVER and $INSTANCE). the first one containing the alpha characters that make up the first part of the string, e.g. e1000g or nge and the... (9 Replies)
Hi. I need assistance with the replacing of text into a specific file via a bash script.
My bash script, once run, currently provides a menu of computer names to choose.The script copies onto my system various files, depending what computer was selected in the menu.This is working OK.
Now, I... (1 Reply)
Hi I have a problem, I am attempting to write a bash script that goes through a file and can determine how many characters are at a set point in a line starting with QTY+113:100:PCE, If it detects 3 digits (number in bold) then pad it out with 12 zero's
If there are only two digits then pad it... (8 Replies)
In the below portion of a bash script the user selects a file from a directory.
select file in $(cd /home/cmccabe/Desktop/NGS/API/5-14-2016/bedtools;ls);do break;done
files in directory
123_base_counts.txt
456_base_counts.txt
789_base_counts.txt
second portion of bash currently (user... (4 Replies)
As part of a bash the below line strips off a numerical prefix from directory 1 to search for in directory 2.
for file in /home/cmccabe/Desktop/comparison/missing/*.txt
do
file1=${file##*/} # Strip off directory
getprefix=${file1%%_*.txt}
... (5 Replies)
The bash bash below extracts the oldest folder from a directory and stores it in filename
That result will match a line in bold in input. In the matching line there is an_xxx digit in italics that
(once the leading zero is removed) will match a line in link. That is the lint to print in output.... (2 Replies)
Hey everyone,
I am trying to extract column values from a column in a tab-delimited text file and overlay them in a 2nd tab-delimited text file using a V-lookup type script in Unix bash.
These are the 1st few rows of the 1st input file IN1:
rsid chromosome position allele1 ... (10 Replies)
Discussion started by: Geneanalyst
10 Replies
LEARN ABOUT PLAN9
diff
DIFF(1) General Commands Manual DIFF(1)NAME
diff - differential file comparator
SYNOPSIS
diff [ -efbwr ] file1 ... file2
DESCRIPTION
Diff tells what lines must be changed in two files to bring them into agreement. If one file is a directory, then a file in that directory
with basename the same as that of the other file is used. If both files are directories, similarly named files in the two directories are
compared by the method of diff for text files and cmp(1) otherwise. If more than two file names are given, then each argument is compared
to the last argument as above. The -r option causes diff to process similarly named subdirectories recursively. The normal output con-
tains lines of these forms:
n1 a n3,n4
n1,n2 d n3
n1,n2 c n3,n4
These lines resemble ed commands to convert file1 into file2. The numbers after the letters pertain to file2. In fact, by exchanging `a'
for `d' and reading backward one may ascertain equally how to convert file2 into file1. As in ed, identical pairs where n1 = n2 or n3 = n4
are abbreviated as a single number.
Following each of these lines come all the lines that are affected in the first file flagged by `<', then all the lines that are affected
in the second file flagged by `>'.
The -b option causes trailing blanks (spaces and tabs) to be ignored and other strings of blanks to compare equal. The -w option causes
all white-space to be removed from input lines before applying the difference algorithm.
The -e option produces a script of a, c and d commands for the editor ed, which will recreate file2 from file1. The -f option produces a
similar script, not useful with ed, in the opposite order. It may, however, be useful as input to a stream-oriented post-processor.
Except in rare circumstances, diff finds a smallest sufficient set of file differences.
FILES
/tmp/diff[12]
SOURCE
/sys/src/cmd/diff
SEE ALSO cmp(1), ed(1)DIAGNOSTICS
Exit status is the empty string for no differences, for some, and for trouble.
BUGS
Editing scripts produced under the -e or -f option are naive about creating lines consisting of a single `.'.
When running diff on directories, the notion of what is a text file is open to debate.
DIFF(1)