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Shell Programming and Scripting
replace spaces/tabs with delimiter |
Post 302512281 by kato on Saturday 9th of April 2011 08:18:57 AM
04-09-2011
Thanks Alister, I was not aware of the -i implementation detail, which is interesting. 
I like your passing of commands to ed to perform the edit, which seems very natural - use the editor to make edits. But I wonder why the -i implementation did not do something similar. Moreover, why all sed versions do not have this feature is strange.
I like your passing of commands to ed to perform the edit, which seems very natural - use the editor to make edits. But I wonder why the -i implementation did not do something similar. Moreover, why all sed versions do not have this feature is strange.
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LEARN ABOUT LINUX
vipw
VIPW(8) System Management Commands VIPW(8) NAME
vipw, vigr - edit the password, group, shadow-password or shadow-group file SYNOPSIS
vipw [options] vigr [options] DESCRIPTION
The vipw and vigr commands edits the files /etc/passwd and /etc/group, respectively. With the -s flag, they will edit the shadow versions of those files, /etc/shadow and /etc/gshadow, respectively. The programs will set the appropriate locks to prevent file corruption. When looking for an editor, the programs will first try the environment variable $VISUAL, then the environment variable $EDITOR, and finally the default editor, vi(1). OPTIONS
The options which apply to the vipw and vigr commands are: -g, --group Edit group database. -h, --help Display help message and exit. -p, --passwd Edit passwd database. -q, --quiet Quiet mode. -s, --shadow Edit shadow or gshadow database. ENVIRONMENT
VISUAL Editor to be used. EDITOR Editor to be used if VISUAL is not set. FILES
/etc/group Group account information. /etc/gshadow Secure group account information. /etc/passwd User account information. /etc/shadow Secure user account information. SEE ALSO
vi(1), group(5), gshadow(5) , passwd(5), , shadow(5). System Management Commands 06/24/2011 VIPW(8)