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Top Forums Shell Programming and Scripting Extract information from txt file Post 302985395 by edekP on Wednesday 9th of November 2016 04:58:03 AM
Old 11-09-2016
Sorry, I have another question...
if the file has different number of column how can I do it?
I saw that with while read line it is possible to read all line, but how can I define a number of variable that change with the number of column?
For example if the file is:
Code:
AA FG TH
AD FR HK LO
AX DF ER TR
AZ SD WE

Thank you in advance.


Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 11-09-2016 at 06:10 AM.. Reason: Added CODE tags.
 

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CHSH(1) 							   User Commands							   CHSH(1)

NAME
chsh - change your login shell SYNOPSIS
chsh [-s shell] [-l] [-u] [-v] [username] DESCRIPTION
chsh is used to change your login shell. If a shell is not given on the command line, chsh prompts for one. chsh is used to change local entries only. Use ypchsh, lchsh or any other implementation for non-local entries. OPTIONS
-s, --shell shell Specify your login shell. -l, --list-shells Print the list of shells listed in /etc/shells and exit. -u, --help Print a usage message and exit. -v, --version Print version information and exit. VALID SHELLS
chsh will accept the full pathname of any executable file on the system. However, it will issue a warning if the shell is not listed in the /etc/shells file. On the other hand, it can also be configured such that it will only accept shells listed in this file, unless you are root. EXIT STATUS
Returns 0 if operation was successful, 1 if operation failed or command syntax was not valid. SEE ALSO
login(1), passwd(5), shells(5) AUTHOR
Salvatore Valente <svalente@mit.edu> AVAILABILITY
The chsh command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux July 2009 CHSH(1)
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