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UNIX for Dummies Questions & Answers
Deleting octal values
Post 302525736 by vino.paal on Friday 27th of May 2011 11:46:12 PM
05-28-2011
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1. Programming
hi
i have a peculiar problem...i have a number of stirngs separated by a '/0'. it looks somethings like:
char test="abk\0jsdhj\01234\0"
actually i will be reading this from a file or something...
im supposed to change the \0 to a ','
but in C the octal representation starts with a '\'...... (1 Reply)
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Hi,
Is there any way to display the permissions in octal format rather than "rwxrwxrwx" format.
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I have a file with 3 columns
2 4 5
2 4 7
3 5 7
4 -6 9
5 -9 4
6 -3 3
Bascially I want to delete the entire row if column 2 is a "-"
So the end result will be
2 4 5
2 4 7
3 5 7
I have trouble doing this cause of the - in front of the number.
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Is there seriously not an easy way to do this? you really need a script for it? that is ridiculous! Please someone tell me there is an ls switch to view octal permissions instead of rwx i want 777. (1 Reply)
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key pair is 1st and 6th column ex:a20 : p10 or a20 : p11
For every key pair if the vlaue(4th column) is the same then delete all the lines who has keypair and the value
ex: a20 : p10 has value 1 only then delete those but a20 : p11 has different values 1,2 and 3 and keep those.
input
a20 ... (8 Replies)
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Using korn shell. I am reading a file line by line. If a record has a carriage return (octal 015) then I append the second record to the first record. Not all records have a carriage return. I have the unix shell script working with grep, but when my file has +100,000 records it runs slow. I would... (3 Replies)
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Hello,
I have a very large file for which I would like to remove all rows for which the value of columns 2-5 is zero.
For instance I would like this file:
contig1, 0, 0, 0, 0
contig2, 1, 3, 5, 0
contig3, 0, 0, 0, 0
contig4, 0, 5, 6, 7
To become this file:
contig2, 1, 3, 5,0 ... (17 Replies)
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Hi I have a difficulty in writing shell script for performing the tasks.
A B C D
12 230 16 259
18 260 23 283
21 291 36 298
41 309 49 420
52 425 57 450
61 456 70 473
72 475 79 486
If the A(row no.2) < C(row no.1) then delete value A(row no.1) and so on...
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Hello everyone,
I have a requirement as shown below. I need to delete consecutive same values from the source file and give it as output file.
Source:
a,b,c,d,e,e,f,g
Target:
a,b,c,d,f,g
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Here are a few lines from my script. The problem I am having is that the statement for gstat returns this error:
line 43:
The statement is coming from gstat.
Is there a way to fix it? Apparently -eq 02 is coming up as some octal value, I need it to be recognized as 02.
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LEARN ABOUT REDHAT
head
HEAD(1) FSF HEAD(1) NAME
head - output the first part of files SYNOPSIS
head [OPTION]... [FILE]... DESCRIPTION
Print 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=SIZE print first SIZE bytes -n, --lines=NUMBER print first NUMBER lines instead of first 10 -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 SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg. AUTHOR
Written by David MacKenzie. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. 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 head should give you access to the complete manual. head (coreutils) 4.5.3 February 2003 HEAD(1)