Difference between using "echo" builtin and /bin/echo
So in my shell i execute:
This waits one second and returns.
But
continues to run, and doesn't stop until i kill it explicitly.
I have tried this in bash as well as zsh, but the behaviour is the same. I wonder, why do these statements execute in such different manner? I understand, that in the first case right part of the pipe finishes after reading single line from its stdin, and terminates. Consequently, the interpretor terminates the whole pipe. But why does this scenario not apply to the second case?..
Hi,
I've modified the syslogd source to include a thread that will keep track of a timer(or a timer thread). My intention is to check the file size of /var/log/messages in every one minute & if the size is more than 128KB, do a echo " " > /var/log/messages, so that the file size will be set... (7 Replies)
Hello All
Nice to meet you all here in this forum,
it's my 1rst time here
i'm asking about a little issue that i face
i added a ksh script that echo " please insert your name " and store the output to a login.log file.
the script is working fine with normal telnet
but Xstart is not working... (8 Replies)
echo `echo ` doesn't echoes anything. And it's logic. But
echo `echo `echo ` ` does echoes "echo". What's the logic of it? the `echo `echo ` inside of the whole (first) echo, echoes nothing, so the first echo have to echo nothing but echoes "echo"
(too much echoing :P):o (2 Replies)
what if the difference between
#!/bin/sh
and
#!/bin/bash
I wrote a script with the second heading now when i change my heading to the first one ...the script is not executing well....im not getting the required output....any solution to this problem...or do i have to start the... (3 Replies)
Hi guys,
I have a shell script where I have the following:
for i in ad0 ad1
do
gpart create -s gpt $i || echo "Cannot create GPT partition on "$i". Exiting ..."
gpart add -s 128 -t freebsd-boot $i || echo "Cannot add freebsd-boot partition on "$i". Exiting ..."
gpart add -s 4G -t... (2 Replies)
Hi Folks,
As per the subject, the following command is not working as expected.
echo $variable | mail -s "subject" "xxx@xxx.com"
Could anyone figure it out whats wrong with this. I am using AIX box.
Regards, (2 Replies)
I came across and unexpected behavior with redirections in tcsh. I know, csh is not best for redirections, but I'd like to understand what is happening here.
I have following script (called out_to_streams.csh):
#!/bin/tcsh -f
echo Redirected to STDOUT > /dev/stdout
echo Redirected to... (2 Replies)
Hi guys,
Been messing around with shell programming for a couple of days and I found something that was pretty odd in the behavior of the echo command. Below is an example-:
When I type the following in my /home directory from my lxterminal in Debian-:
echo "`ls -l`"
I get the... (2 Replies)
I'm on Ubuntu 14.04 and I manually updated my coreutils so that "tee" is now on version 8.27
I was running a script using bash where there is some write to pipe error at some point causing the tee command to exit abruptly while the script continues to run. The newer version of tee seems to prevent... (2 Replies)
Discussion started by: stompadon
2 Replies
LEARN ABOUT OSF1
line
line(1) General Commands Manual line(1)NAME
line - Reads one line from standard input
SYNOPSIS
line
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
line: XCU5.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
OPTIONS
None
DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command
within a shell command file to read from your terminal. The line command always writes at least a newline character.
NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead.
EXIT STATUS
Success. End-of-File.
EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log
This shell procedure displays the message: Enter comments for the log:
It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon)
prompt. See the echo command for information about the c escape sequence.
SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p)
Functions: read(2)
Standards: standards(5)line(1)