In fact my sort | uniq example was not so far off the mark then.
A variable in Bourne classic is just a piece of text; some shells such as bash and ksh have array variables, too. The common trick would be to modify the text so it is in a suitable form by the time you assign it to a variable.
In my /etc/profile, my $PATH variable is set as follows:
$PATH =/sbin:/usr/sbin:/usr/bin:/etc
Then how do I add an additional directory to it? say
/export/home/abd/rose
Please advise.
Thanks!
Deepali (3 Replies)
hello,
I have to communicate with a distant station . But Both belong to the same area. So I do not need a gate .
But when I make a traceroute, it indicates that I pass through out a gate.
What can I do to establish a direct connexion between the both.
(with NT ) (1 Reply)
Hello,
I have installed a new program called chimera under the directory /usr/local/bin/chimera.
the executable is under the directory /usr/local/bin/chimera/bin/chimera.e
If i put myself under the latest directiry and I type ./chimera, the program works.
I would like to avoid this and I... (1 Reply)
hi ,
I have a javascript file like this:
function fnValidateId(){
var array_id = new Array("444","7888","6633","555","146562","3333","33332")
var tmp_id = document.form1.id.value;
var num=0;
while(1)
{
if(tmp_id ==... (9 Replies)
Is there a command for finding all files on the system named ".bashrc" that modify the PS1 variable? I'd like to list the full file name(s) and the protection (including the full path). (5 Replies)
Hi,
I have a file that looks something like this (2 columns 4 rows):
eeeeeeeeeeeeeeeeeeeeeeeeeeeee -45
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr -24
ttttttttttttttttttttttttttttttttttttttttttt -29
uuuuuuuuuuuuuuuuuuuuuuuuuuu -23
How do I get it to look like this:
-45... (3 Replies)
Hello everyone,
I have some data files, with mixed header formats. the sample for the same is:
>ABCD76567.x1
AGTCGATCGTAGTCGTAGCTGT
>ABCD76567.y1
AGTCGATCGTAGTCGTAGCTGT
>ABCD76568.x1 pair_info:898989
AGTCGATCGTAGTCGTAGCTGT
>ABCD76568.y1 pair_info:893489
AGTCGATCGTAGTCGTAGCTGT... (2 Replies)
Hi,
I have a small piece of Makefile script which throw's error on Sun Sparc machine, but works fine with Sun Optron, Linux, AIX machines.
FOO=Naveen
test1:FOO=Dhilip
test1:
@echo FOO is ${FOO}
test2:
@echo Me is ${FOO}
Output on Sun Sparc -
ukhml-v890new-~/test: make test1... (5 Replies)
I have a script that currently runs fine and I need to add or || (or) condition to the if statement and I'm not sure the exact syntax as it relates to the use of brackets.
my current script starts like this:
errLog="/usr/local/website-logs/error.log"
apacheRestart="service httpd restart"... (3 Replies)
Hello,
I have a filename that looks like this:
ABC_96_20141031_041133.232468
I need to shorten only the "_2014" part of the filename to simply "_14" so the filename looks like:
ABC_96_141031_041133.232468
I have to do a search for this string because there are hundreds of files and... (17 Replies)
Discussion started by: bbbngowc
17 Replies
LEARN ABOUT PLAN9
env
ENV(3) Library Functions Manual ENV(3)NAME
env - environment variables
SYNOPSIS
bind #e /env
/env/var1
/env/var2
...
DESCRIPTION
The env device serves a one-level directory containing files with arbitrary names and contents. The intention is that the file name is the
name of an environment variable (see rc(1)), and the content is the variable's current value.
When a fork(2) system call creates a new process, both the parent and the child continue to see exactly the same files in the env device:
changes made in either process can be noticed by the other. In contrast, an rfork system call with the RFENVG bit set (see fork(2)) causes
a split: initially both process groups see the same environment files, but any changes made in one process group cannot be noticed by the
other. An rfork with RFCENVG splits and then clears the environment.
SEE ALSO rc(1), fork(2)SOURCE
/sys/src/9/port/devenv.c
BUGS
A write starting at an offset after the current extent of a file yields an error instead of zero filling.
ENV(3)