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Shell Programming and Scripting
read command
Post 302548901 by sharath24 on Friday 19th of August 2011 04:31:37 PM
08-19-2011
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1. Shell Programming and Scripting
'Morning
vmstat 1 1|sed 1,2d|awk '{printf("%s\n",$1)}'|read var
echo $var
This syntax run on AIX (ksh) but not on linux (bash).
I think that problem is the read command, because the following syntax is ok :
vmstat 1 1|sed 1,2d|awk '{printf("%s\n",$1)}'
Could someone help me!
regards... (16 Replies)
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I have file which is space filled likE below
Note: here spaces are replaced by |.
When I use read command to read this file all the spaces are truncated only the default space is not removed. The output is
Note: here spaces are replaced by |.
Can this default truncation be override? (4 Replies)
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Hi all,
What does -u option indicates in read command.
while read -u var1
do
.
.
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hi all
iam not able use read command in the while loop in the following program
while read line
do
echo $line
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read name
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Is there a way to use the READ command and force the user to enter a non-zero length string? If the user enters a zero length string the user input is rejected.
code:
print "what is the answer: \n"
read answer (2 Replies)
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Hi everyone,
I have problem while writing a shell script for linux (Red Hat).
First I need to create a read command. I tried to google this but so far I can't sort this out. I hope you will be able to help me.
I have to read a file like this :
GESTION_DATA_SET_variable1_variable2
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Hey, guys!
Trying to research this is such a pain since the read command itself is a common word. Try searching "unix OR linux read command examples" or using the command substitution keyword. :eek:
So, I wanted to use a command statement similar to the following.
This is kinda taken... (2 Replies)
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Hi,
I am facing issues with the below:
I have a lookup file say lookup.lkp.This lookup.lkp file contains strings delimited by comma(,).
Now i want to read this command from file and execute it.
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Is there a way to make the input of the read command (or some similar command that I'm unaware of) not visible, or with an astrix??
An example:
#!/bin/bash
# Example
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Trying to use the read command. How do you add a 2nd option? In this example I'd like to offer two options, pre and post. If you answer pre, you get one output but if you answer post, you get another output.
echo Is this pre or post?
read pre
if
then echo You have typed pre.
fi (6 Replies)
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LEARN ABOUT ULTRIX
mhpath
mhpath(1mh) mhpath(1mh) Name mhpath - print full pathnames of MH messages and folders Syntax mhpath [ +foldername ] [ msgs ] [ -help ] Description Use the command to display the full pathname of the specified folder. If you do not specify a folder, displays the pathname of the current folder. If you specify a message with its message number, displays the pathname of the specified message. You can also specify a number of mes- sages, or a range of messages. If the top of the range that you specify is greater than the last message in the folder, displays as much of the specified range as possible. Additionally can take a keyword or a sequence name. The following keywords are acceptable: first The first message in the folder. last The last message in the folder. new The message after the last message in the folder. You cannot use new as part of a message range. cur The current message in the folder. prev The message before the current message. next The message after the current message. all All of the messages in the folder. Options -help Prints a list of the valid options to this command. Examples In the following example, displays message 3 in the folder % mhpath +inbox 3 /r/phyl/Mail/inbox The following example displays the pathname of messages 2 to 5 in the current folder: % mhpath 2-5 /r/phyl/Mail/inbox/2 /r/phyl/Mail/inbox/3 /r/phyl/Mail/inbox/4 /r/phyl/Mail/inbox/5 Profile Components Path: To determine your Mail directory Files The user profile. See Also folder(1mh) mhpath(1mh)