04-13-2014
The vi utility is an interactive editor, not a scripting editor. Look at the man pages for ex, ed, and sed for utilities that are intended to be used to edit files in scripts.
10 More Discussions You Might Find Interesting
1. AIX
What I want to do is just delete some lines from a text file, I know it's easy using copy and redirect function, but what I have to do is edit this file (delete the lines) directly, as new lines may be added to the text file during this period. Can AIX do this ?
# cat text
1:line1
2:line2... (3 Replies)
Discussion started by: dupeng
3 Replies
2. Shell Programming and Scripting
Hi
I need some help using shell script to edit a file.
My original file has the following format:
/txt/email/myemail.txt
/txt/email/myemail2.txt
/pdf/email/myemail.pdf
/pdf/email/myemail2.pdf
/doc/email/myemail.doc
/doc/email/myemail2.doc
I need to read each line. If the path is... (3 Replies)
Discussion started by: tiger99
3 Replies
3. Shell Programming and Scripting
I need to edit a config file using shell script. i.e., Search with the 'key' string and edit the 'value'.
For eg: below is what I have in the config file "configfile.cfg".
Key1=OldValue1
Key2=OldValue2
I want to search for "Key1" and change "OldValue1" to "NewValue1"
Thanks for your... (7 Replies)
Discussion started by: rajeshomallur
7 Replies
4. Shell Programming and Scripting
Can anyone provide me a shell script to edit a xml file and delete one entry.
To do manually i can edit(vi editor) the file and 'dd' will delete the file.But I wiluld to know if I can do with a script.
Thanks in advance
Tannu (6 Replies)
Discussion started by: tannu
6 Replies
5. Shell Programming and Scripting
I have one csv file and in that I want update particular cell. I know the row and coloumn number for that respective.
Please help me... (6 Replies)
Discussion started by: deepak_p86
6 Replies
6. Shell Programming and Scripting
Hi,
Can some one tell me if we can configure the jobs in crontab using a shell script.
I know it can be done easily by using "crontab -e", but i just want to know whether we can add a job into the crontab using a shell script.
If it can be done, plz suggest the procedure to do it.
If it... (6 Replies)
Discussion started by: rudrarajumk
6 Replies
7. Shell Programming and Scripting
Hello,
I have a big file in wich I would like to rename inside this exactly the string '_ME' and not rename in case we have 'ABC_MELANGE'. Is there a way to do it by using a shell script?
Any tip will be apreciated.
The file is like described bellow, after using command more filename :
... (3 Replies)
Discussion started by: Titas
3 Replies
8. Shell Programming and Scripting
i have a file called number which contains data as
1 2 3 4 5
6 7 8 9 0
9 8 7 6 5
4 3 2 1 0
0 1 2 3 4
needed a shell script to print the output as
1
7
7
1
4
and (2 Replies)
Discussion started by: jacky29
2 Replies
9. Shell Programming and Scripting
I am trying to automate hadoop installation procedure using shell script. It involves go to perticular directory and add some more lines to the file /etc/sysctl.conf. How this can be done?
Regards
Navaz (1 Reply)
Discussion started by: Abdul Navaz
1 Replies
10. Shell Programming and Scripting
Hello Folks,
I have a file named as date.dat present at /tmp/abc location which has following data -
20161030,20161031,20161101
I need to remove this line and replace it with something like below -
$param1,$param2,$param3
Param1, Param2 and param3 stores the date based on some calculation in... (1 Reply)
Discussion started by: ektubbe
1 Replies
VIPW(8) BSD System Manager's Manual VIPW(8)
NAME
vipw -- edit the password file
SYNOPSIS
vipw [-d directory]
DESCRIPTION
The vipw utility edits the password file after setting the appropriate locks, and does any necessary processing after the password file is
unlocked. If the password file is already locked for editing by another user, vipw will ask you to try again later. The default editor for
vipw is vi(1).
When run without options, vipw will work with the password files in /etc. The -d option may be used to specify an alternative directory to
work with.
The vipw utility performs a number of consistency checks on the password entries, and will not allow a password file with a ``mangled'' entry
to be installed. If vipw rejects the new password file, the user is prompted to re-enter the edit session.
Once the information has been verified, vipw uses pwd_mkdb(8) to update the user database. This is run in the background, and, at very large
sites could take several minutes. Until this update is completed, the password file is unavailable for other updates and the new information
is not available to programs.
ENVIRONMENT
If the following environment variable exists it will be utilized by vipw:
EDITOR The editor specified by the string EDITOR will be invoked instead of the default editor vi(1). This can be used to allow a
script to non-interactively modify the password file.
PW_SCAN_BIG_IDS See pwd_mkdb(8).
SEE ALSO
chpass(1), passwd(1), passwd(5), adduser(8), pw(8), pwd_mkdb(8)
HISTORY
The vipw utility appeared in 4.0BSD.
BUGS
The mechanism for checking for password file modifications requires that the modification time of the password file changes. This means that
in a default configuration where file system timestamps are not calculated with sub-second precision, EDITOR has to run for at least one sec-
ond. Non-interactive editor scripts should invoke sleep(1) or equivalent to ensure this happens.
BSD
February 14, 2012 BSD