03-10-2005
command mode:
:1,$s/WORD_TO_REPLACE/WORD_TO_SUBSTITUTE/g
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1. UNIX for Dummies Questions & Answers
I know in vi you can do
:%s/replaceme/withthis/
but if i want to find all lines say without a # at the begining and I want to put it in how would that command be formatted? I can't figure it out for the life of me.
#comment
blah1
hey1
grrr1
#comment
#blah1
#hey1
#grrr1 (5 Replies)
Discussion started by: kingdbag
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2. UNIX for Dummies Questions & Answers
How to write perl substitute command in shell script without invoking a perl script file seperately.
for ex:
shell script to relace IT with CSC in a file using perl substitute command. (3 Replies)
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Hi,
I have query terms like this:
a) apple bannana
b) apple bannana AND chickko
c) "milk shake" OR Graphes orange
whereever there is space substitue with AND operator.
I tried like this: (2 Replies)
Discussion started by: vanitham
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4. Shell Programming and Scripting
My question is how would I substitute for ceratain number of occurences in a line? If this is my input
rjohns BFSTDBS01 Standard Silver NPRO30DINCR 2 Client
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Discussion started by: reggiej
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5. Shell Programming and Scripting
Hi
I'm trying to substitute word "January" with word "March" in my script but in certain lines only.
I have couple words containing pattern that I want to substitute e.g.
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Trying to do cmd below... (9 Replies)
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6. Shell Programming and Scripting
Hi,,
Let example cmd: $$config/all
Here I want to replace or subsitute blank space and also with any other character in place of "$" sign...and also want to replace backslash (/) with forward (\)......in expect script
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Hi there,
i am updating a file on UNIX and have many lines as per below :
listen:x:37:4:Network Admin:/usr/net/nls:
i would like to substitute from the :/usr to the end of the line.
so at the moment im using this :
:s/"\/$/ /g
but i get an error.can anyone help?
thank you (3 Replies)
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I am trying to do what I thought should be a simple substitution, but I can't get it to work.
File:
Desire output:
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Hi All,
I am trying to substitute a line in my existing file with the set of lines from another file. Regarding the existing file, i am sure that the line i am substituting will occur only at one place.
I have stored the text to be replaced in another file.
I am using below command.
cat... (7 Replies)
Discussion started by: chpsam
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HI
I am trying to use the following code in the shell script (using grep)
usage()
{
echo "Usage: ./$0 <file name> <interval> <pattern>"
}
METRICS_FILE=$1
INTERVAL=$2
PATTERN="$3"
..
if
then
PATTERN="grep Gx"
fi
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POPEN(3) 1 POPEN(3)
popen - Opens process file pointer
SYNOPSIS
resource popen (string $command, string $mode)
DESCRIPTION
Opens a pipe to a process executed by forking the command given by $command.
PARAMETERS
o $command
- The command
o $mode
- The mode
RETURN VALUES
Returns a file pointer identical to that returned by fopen(3), except that it is unidirectional (may only be used for reading or writing)
and must be closed with pclose(3). This pointer may be used with fgets(3), fgetss(3), and fwrite(3). When the mode is 'r', the returned
file pointer equals to the STDOUT of the command, when the mode is 'w', the returned file pointer equals to the STDIN of the command.
If an error occurs, returns FALSE.
EXAMPLES
Example #1
popen(3) example
<?php
$handle = popen("/bin/ls", "r");
?>
If the command to be executed could not be found, a valid resource is returned. This may seem odd, but makes sense; it allows you to
access any error message returned by the shell:
Example #2
popen(3) example
<?php
error_reporting(E_ALL);
/* Add redirection so we can get stderr. */
$handle = popen('/path/to/executable 2>&1', 'r');
echo "'$handle'; " . gettype($handle) . "
";
$read = fread($handle, 2096);
echo $read;
pclose($handle);
?>
NOTES
Note
If you're looking for bi-directional support (two-way), use proc_open(3).
Note
When safe mode is enabled, you can only execute files within the safe_mode_exec_dir. For practical reasons, it is currently not
allowed to have .. components in the path to the executable.
Warning
With safe mode enabled, the command string is escaped with escapeshellcmd(3). Thus, echo y | echo x becomes echo y | echo x.
SEE ALSO
pclose(3), fopen(3), proc_open(3).
PHP Documentation Group POPEN(3)