awk does not work as a coprocess for me. It hangs when I try to read a result and it probably is buffering the input. But you are redirecting the output of the coprocess back to standard-in anyway. I don't understand what you're trying to do with that script. Here is a script that uses a bc coprocess to add numbers (which works) and tries to uses an awk coprocess to add numbers (which hangs).
Hello everybody,
I have a question about I/O redirection within a coprocess.
I want to setup a coprocess and then redirect output to a file on a remote machine.
Here's some Perderabo code modified
exec 4>&1
#
# Section 1 --- Prove that we can talk with the hosts in HOSTLIST
# ... (4 Replies)
I am wracking my brains over this. I am trying to use a Korn Shell script to execute an Oracle PL/SQL procedure, using the Oracle command line interface (sqlplus). The script starts sqlplus in a coprocess, and the two processes communicate using a two-way pipe. The bgnice option is off, so both... (8 Replies)
This is probably a simple one for the wise.
I have just started using a coprocess (first time) in order to facilitate telnet'ing from inside a shell script. It's working, but when I run a remote command I need to get the output into a local variable, but alas my kung-fu is weak.
#!... (10 Replies)
Hi there,
I want to connect to a Cisco router with a KSH script via coprocess:
telnet 192.168.2.82|&
print -p “login”
print -p "password"
With telnet it works. Now I want to use SSH:
ssh -T -l login 192.168.2.82|&
print -p "password"
The router answer me I enter a bad... (7 Replies)
Actually I got a list of file end with *.txt
I want to use the same command apply to all the *.txt
Thus I try to find out the fastest way to write those same command in a script and then want to let them run automatics.
For example:
I got the file below:
file1.txt
file2.txt
file3.txt... (4 Replies)
While assisting a forum member, I recommended running SQL/Plus in a coprocess (to make database connections and run a test script) for the duration of his script rather than starting/stopping it once for every row in a file he was processing.
I recalled I made a coprocess example for folks at... (2 Replies)
Hi,
I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files.
To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the... (10 Replies)
Hello experts,
I'm stuck with this script for three days now. Here's what i need.
I need to split a large delimited (,) file into 2 files based on the value present in the last field.
Samp: Something.csv
bca,adc,asdf,123,12C
bca,adc,asdf,123,13C
def,adc,asdf,123,12A
I need this split... (6 Replies)
Good evening, Im newbie at unix specially with awk
From an scheduler program called Autosys i want to extract some data reading an inputfile that comprises jobs names, then formating the output to columns for example
1.
This is the inputfile:
$ more MapaRep.txt
ds_extra_nikira_usuarios... (18 Replies)
Discussion started by: alexcol
18 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)