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Shell Programming and Scripting
Replace only if the keyword is the first word in every line
Post 302322554 by alexzubin on Thursday 4th of June 2009 04:46:30 AM
06-04-2009
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1. Shell Programming and Scripting
Could someone tell me how to replace a word at a particular line by a single SED or AWK command?
e.g. I have a file with the contents below:
$ cat file1
111 AAA
333 CCC
222 BBB
444 CCC
I want to replace the word "CCC" with a blank to get the desired output below:
111 AAA
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I have a file like this..
Maharastra Mumbai worli
Maharastra Mumbai navy
maharatra Pune
Maharastra Nagpur
Karnataka Bangalore
Karnataka Mysore
Karnataka Mangalore
Punjab Amritsar
punjab Jalandar
my expected outcome should be like this
Maharastra Mumbai worli
---------- ... (9 Replies)
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Hi folks,
have a look into the attachment, i am not familiar with unix, can you please help me in this regard.
thanks in advance, :)
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Hi All,
If I have a line as following:
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Hi friends,
i just want to know the command though which i can get the next word which comes just after a particluar keyword. For example:
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Hi,
I have been trying to replace the key word
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show errors"
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How to catch a two word keyword which may contain a new line(may include spaces or tab) in it.
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$more a.txt
create view
as
(select from
.........
..........
( select
....
(
select
......
..
select only no (((
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Hi
I want to implement something like this:
if( keyword1 exists)
then
check if(keyword2 exists in the same line)
then replace keyword 2 with New_Keyword
else
Add New_Keyword at the end of line
end if
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I have query to replace the first word in line using below code but its replace the middle word too
sed -i 's/load /# LOAD/' /tmp/check.sql
Query 1 :
UPDATE accheadcon_data_last_upload SET last_upload_date = '2017-07-23'
Replace to
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LEARN ABOUT V7
accept
accept(1M) System Administration Commands accept(1M) NAME
accept, reject - accept or reject print requests SYNOPSIS
accept destination... reject [-r reason] destination... DESCRIPTION
accept allows the queueing of print requests for the named destinations. reject prevents queueing of print requests for the named destinations. Use lpstat -a to check if destinations are accepting or rejecting print requests. accept and reject must be run on the print server; they have no meaning to a client system. OPTIONS
The following options are supported for reject: -r reason Assigns a reason for rejection of print requests for destination. Enclose reason in quotes if it contains blanks. reason is reported by lpstat -a. By default, reason is unknown reason for existing destinations, and new printer for destinations added to the system but not yet accepting requests. OPERANDS
The following operands are supported. destination The name of the destination accepting or rejecting print requests. Destination specifies the name of a printer or class of printers (see lpadmin(1M)). Specify destination using atomic name. See printers.conf(4) for information regarding the naming conventions for atomic names. EXIT STATUS
The following exit values are returned: 0 Successful completion. non-zero An error occurred. FILES
/var/spool/lp/* LP print queue. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWpcu | +-----------------------------+-----------------------------+ |CSI |Enabled (see NOTES) | +-----------------------------+-----------------------------+ SEE ALSO
enable(1), lp(1), lpstat(1), lpadmin(1M), lpsched(1M), printers.conf(4), attributes(5) NOTES
accept and reject affect only queueing on the print server's spooling system. Requests made from a client system remain queued in the client system's queueing mechanism until they are cancelled or accepted by the print server's spooling system. accept is CSI-enabled except for the destination name. SunOS 5.10 8 Feb 1999 accept(1M)