I have a colon-delimited text file of names, addresses and phone numbers. I am trying to write a script that can add additional entries and then sort it alphabetical by last name and resave it to the original file. I am using C shell to script. This is the section of my script that I wish to... (8 Replies)
Hi
I am using nohup command in script(say nohup ls- ltr > somefile 2>&1 & ). I dont want any kind of output to be displayed on screen. When i tried the above nohup it still gives me some out put on screen like
2991
Done >somefile 2>&1
Please you let me know what is... (3 Replies)
Hi Guys,
I m new to UNIX and new to this forum. Was wondering if someone can help me understand redirection (standard input output pipeline etc)
for starters, not too sure what this would mean
who | sort > sortedfile | pr | lp
im starting to understand common commands but when throwing... (2 Replies)
I am using tar command to append daily database backups on tape. "tar --append " command help me to do this.
But tar --append command does not produce any output on stdout if it succeed.
I want the output for that appended command to a log file.
This log file should contain only the name of the... (0 Replies)
Hello everyone,I'm reading a book and there's code fragment:
exec 3>&1
ls -l 2>&1 >&3 3>&- | grep bad 3>&-
exec 3>&-
It says that the red part of that code does not close fd 3 but the green does close the fd 3.I can't understand that.....Why?Any predicate will be appreciated.:) (18 Replies)
Dear All,
./waf --run scratch/myfirst > log.out 2>&1
The above is a command line to redirect the output to a file called log.out.
what is the 2>&1 part for ?
Thank you (2 Replies)
I need to count the number of lines in a .txt file and put it in a variable.
I am using the following code
#!/bin/bash
count = $(wc -l "some file.txt" | awk '{print$1}')
echo $count
It is giving the following error.
line3: count: command not foundWhat am I doing wrong here? :confused: (7 Replies)
Hello,
I'm new to Unix (working with OS X 10.8.5) and therefore at the beginning of my adventure. If I ask something stupid, then this is not intentional, but simple nescience. :rolleyes:
I have a problem with the redirection of text file content to echo. I was experimenting with redirection... (6 Replies)
Hi,
I have a peculiar issue w.r.t redirecting the command output to a file when using loop.
I am redirecting command output to same file in a series of if condition statements, but if one block of if condition statement writes the log to the file , the subsequent block of if condition... (7 Replies)
Discussion started by: ananan
7 Replies
LEARN ABOUT SUNOS
echo
echo(1B) SunOS/BSD Compatibility Package Commands echo(1B)NAME
echo - echo arguments to standard output
SYNOPSIS
/usr/ucb/echo [-n] [argument]
DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.
echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
ronment variables.
For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:
o echo your current-working-directory's full pathname
o pipe the output through tr to translate the path's embedded slash-characters into space-characters
o pipe that output through wc -w for a count of the names in your path.
example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"
See tr(1) and wc(1) for their functionality.
The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if
the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's
echo() also understands a as the audible bell character; however, these commands do not have an -n option.
OPTIONS -n Do not add the NEWLINE to the output.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases.
SunOS 5.10 3 Aug 1994 echo(1B)