$number_clients++;
print("Creating client $number_clients\r");
I have been using the above to increment on the screen as the script increments throughout a while loop. What I would like to know is what is the trick to keep the last one on the screen without printing it again?
Ie
... (1 Reply)
I have a question regarding running perl in the current process.
I shall demonstrate with an example.
Look at this.
sh-2.05b$ pwd
/tmp
sh-2.05b$ cat test.sh
#! /bin/sh
cd /etc
sh-2.05b$ ./test.sh
sh-2.05b$ pwd
/tmp
sh-2.05b$ . ./test.sh
sh-2.05b$ pwd
/etc
sh-2.05b$
So... (10 Replies)
why won't below work?
I am trying to see
a)sipfile has username of the system.
b)it will read the sipfile and do a grep function against the /etc/passwd
c)it will save that output to /tmp/result..
but my script is just hanging...
#!/usr/bin/perl -w
open(SIPFILE, "</tmp/sipfile")
... (4 Replies)
I ran into this issue and thanks to various postings in various forums, was
able to figure out the solution but didn't see one posting that laid the
whole issue out cleanly. So thought the following might help others ...
------------------------------------------------------------------------... (2 Replies)
I have the following problem, which I need done in Perl/ or Python using Unix/linux filters...
1. You have a very large file, named 'ColCheckMe', tab-delmited, that you are asked to process. You are told that each line in 'ColCheckMe' has 7 columns, and that the values in the... (1 Reply)
I have the following problem, which I need done in Perl/ or Python using Unix/linux filters...
1. You have a very large file, named 'ColCheckMe', tab-delmited, that you are asked to process. You are told that each line in 'ColCheckMe' has 7 columns, and that the values... (1 Reply)
I'm attempting to parse a file whose contents follow this format;
4:/eula.1028.txt:
8:/eula.1031.txt:
19:/eula.1033.txt:
23:/eula.1036.txt:
27:/eula.1040.txt:
31:/eula.1041.txt:
35:/eula.1042.txt:
39:/eula.2052.txt:
43:/eula.3082.txt:
The number of lines of the file... (4 Replies)
Hello all!
This is my first post and I'm very new to programming. I would like help creating a simple perl or bash script that I will be using in my work as a junior bioinformatician.
Essentially, I would like to take a tab-delimted or .csv text with 3 columns and write them to a "3D" matrix:
... (16 Replies)
To cut a long story short I need to implement a CEC server in order to allow my Samsung TV to interact with other peripherals. I plan on using a RPi for this purpose.
I have installed CEC-untils and can run the tvservice monitor to look for HDMI events. I now need a simple script that will run... (3 Replies)
Linux System having all Perl, Python, PHP (and Ruby) installed
From a Shell script, can call a Perl, Python, PHP (or Ruby ?) file
eg
eg
a Shell script run in a case statement call to run a php file, also Perl or/and Python file???
Like
#!/usr/bin/bash
....
....
case $INPUT_STRING... (1 Reply)
Discussion started by: hoyanet
1 Replies
LEARN ABOUT OPENDARWIN
printenv
PRINTENV(1) BSD General Commands Manual PRINTENV(1)NAME
printenv, env -- print out the environment, set and print environment
SYNOPSIS
printenv [name]
env [-i] [name=value ...] [utility [argument ...]]
DESCRIPTION
The printenv utility prints out the names and values of the variables in the environment, with one name/value pair per line. If name is
specified, only its value is printed.
Some shells may provide a builtin printenv command which is similar or identical to this utility. Consult the builtin(1) manual page.
The env utility executes utility after modifying the environment as specified on the command line. The option name=value specifies an envi-
ronment variable, name, with a value of value.
The options are as follows:
-i Execute the utility with only those environment values specified. The environment inherited by env is ignored completely.
If no utility is specified, env prints out the names and values of the variables in the environment, with one name/value pair per line.
The env utility is sometimes useful with the ``#!'' construct (see execve(2)). The only difference between ``#!/usr/local/bin/foo'' and
``#!/usr/bin/env /usr/local/bin/foo'' is that the latter works even if /usr/local/bin/foo is itself interpreted. Using env this way also
allows one to reference foo without the path, as well as set up the environment as desired.
ENVIRONMENT
The env utility uses the PATH environment variable is used to locate the requested utility if the name contains no '/' characters.
DIAGNOSTICS
The printenv utility exits 0 on success, and >0 if an error occurs.
The env utility exits 0 on success, and >0 if an error occurs. An exit status of 126 indicates utility was found, but could not be executed.
An exit status of 127 indicates utility could not be found.
COMPATIBILITY
The env utility accepts the - option as a synonym for -i.
SEE ALSO csh(1), sh(1), execvp(3), environ(7)STANDARDS
The env utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The printenv command appeared in 3.0BSD.
BUGS
The env utility doesn't handle utility arguments with equal (``='') signs in their names, for obvious reasons.
BSD June 6, 1993 BSD