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Operating Systems Linux Get a specific line number from a text file Post 302440645 by barryxian on Tuesday 27th of July 2010 11:23:10 PM
Old 07-28-2010
Bug Get a specific line number from a text file

Hello! All,
Could you please tell me how to get a specific line number from a text file?

For example below,

ABC
DEF ---> Get this line number, return to an variable
GHI

My OS is Linux.

Thank you so much for your help in advance!
 

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chfn(1) 						      General Commands Manual							   chfn(1)

Name
       chfn - change system finger entry

Syntax
       chfn [ loginname ]

Description
       The  command  is used to change information about users.  This information is used by the program, among others.  It consists of the user's
       real name, office room number, office phone number, and home phone number. The command prompts the user for each field.	 Included  in  the
       prompt  is  a  default  value,  which is enclosed between brackets.  The default value is accepted simply by typing <CR>.  To enter a blank
       field, type the word `none'.  This is an example:
       % chfn
       Changing finger information for doe
       Name [John Doe]:
       Office number [ABC-1/K0]: DEF-2/K1
       Office Phone []: 1863
       Home Phone [5771546]: none

       The command allows phone numbers to be entered with or without hyphens.	No entries may contain colons, commas, or control characters.

       It is a good idea to run after running to make sure everything is the way you want it.

       The optional argument loginname is used to change another person's finger information.  This can only be done by the superuser.

Restrictions
       The encoding of the office and extension information is installation dependent.

       Because two users may try to write the file at once, a synchronization method was developed.  On rare occasions, a message that	the  pass-
       word file is "busy" will be printed.  In this case, sleeps for a while and then tries to write to the file again.

       If the passwd entry is distributed from another host will not modify it.

       See Also
	      chsh(1), finger(1), passwd(1), passwd(5yp)

																	   chfn(1)
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