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Top Forums UNIX for Dummies Questions & Answers Passing values from file into array in Bash Post 302732077 by ShiGua on Friday 16th of November 2012 02:04:27 PM
Old 11-16-2012
Passing values from file into array in Bash

Hi,

I'm trying to write a bash script that takes a file and passes each line from the file into an array with elements separated by column.

For example:

Sample file "file1.txt":

Code:
1 name1 a first
2 name2 b second
3 name3 c third

and have arrays such as:

Code:
line1 = ( "1" "name1" "a" "first" )
line2 = ( "2" "name2" "b" "second" ) 
line1 = ( "3" "name3" "c" "third" )

I'd also like to know if it's possible to pass each column of values into its own array, such as:

Code:
column1 = ( "1" "2" "3" )
column2 = ( "name1" "name2" "name3" )
column3 = ( "a" "b" "c" )
column4 = ( "first" "second" "third" )

Thank you!

Last edited by Scrutinizer; 11-16-2012 at 11:01 PM.. Reason: code tags
 

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LINK(2) 							System Calls Manual							   LINK(2)

NAME
link - make a hard link to a file SYNOPSIS
#include <unistd.h> int link(const char *name1, const char *name2) DESCRIPTION
A hard link to name1 is created; the link has the name name2. Name1 must exist. With hard links, both name1 and name2 must be in the same file system. Name1 must not be a directory. Both the old and the new link share equal access and rights to the underlying object. RETURN VALUE
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error. ERRORS
Link will fail and no link will be created if one or more of the following are true: [ENOTDIR] A component of either path prefix is not a directory. [ENAMETOOLONG] A path name exceeds PATH_MAX characters. [ENOENT] A component of either path prefix does not exist. [EACCES] A component of either path prefix denies search permission. [EACCES] The requested link requires writing in a directory with a mode that denies write permission. [ELOOP] Too many symbolic links were encountered in translating one of the pathnames. (Minix-vmd) [ENOENT] The file named by name1 does not exist. [EEXIST] The link named by name2 does exist. [EPERM] The file named by name1 is a directory and the effective user ID is not super-user. [EXDEV] The link named by name2 and the file named by name1 are on different file systems. [ENOSPC] The directory in which the entry for the new link is being placed cannot be extended because there is no space left on the file system containing the directory. [EIO] An I/O error occurred while reading from or writing to the file system to make the directory entry. [EROFS] The requested link requires writing in a directory on a read-only file system. [EFAULT] One of the pathnames specified is outside the process's allocated address space. SEE ALSO
symlink(2), unlink(2). 4th Berkeley Distribution August 26, 1985 LINK(2)
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