So I'm trying to figure out a way to do some very simple formatting on standard output. I have a command that I will run (many many times) the output will either be true or false. So all i really want is to run the command and if its true write true in green and if its false to write false in red. Ideally I don't want to be writing anything or reading anything from files. Simply run command and take the output and print it. Nothing permanent saved.
I can use awk with print to simply take standard output and format it how I want. I can't seem to get my if/else working with awk though. Is there some other way I can simply pipe standard output to a true / false logic that might be simpler than awk?
---------- Post updated at 12:11 PM ---------- Previous update was at 11:39 AM ----------
This is what i'm doing now... Seems like the simplest possible way I can do it and it kinda works. It prints the output but my if doesn't seem to be working.. no matter what $0 is I get the same color output.
Hello all
I wander if I make for example " ls -l "
And it gives me all the files in the directory with the additional info like data size and privileges
But what if I like to filter the stout result for example by date
When I try to do:
echo "`ls -l`" | grep "Jan 12"
it gives me the... (2 Replies)
Hi All,
I have created a Unix Shell script whch creates a *.csv file and export it to Excel.
The problem i am facing is that Users wants one of the AMOUNT field in comma separted values. Example :
if the Amount has the value as 3000000 User wants to be in 3,000,000 format.
This Amount format... (2 Replies)
I have a function called sysLogger in a bash script that I am using to redirect stdout and stderr to syslog.
Part of the script contains an option to turn on debugging otherwise I want debugging output to go to /dev/null.
I am struggling to understand how to make this work using the function... (10 Replies)
Hi,
I am having couple of files which i used to copy from windows to Linux, so now in case of text files (CTRL^M) appears at end of line. I know i can convert this windows format file to unix format file by running dos2unix.
My requirement here is that i want to do it automatically using a... (5 Replies)
should be the simplest thing in the world use grep
but i not get it
i have several files, in this files i need to khow how many times the words are repeated but the files must star whit P_
this work
egrep -c "word1|word2" *P_*
result:
P_11351814:1
P_11351823:3
P_11351826:1... (2 Replies)
Hi, I am trying to write the simplest network driver that would send whatever through cable.
My configuration is:
Linux machine with some Intel network adapter
Another machine with WireShark
I connected Intel network adapter to second machine and want anything to pop up at wireshark.
... (12 Replies)
I'm not a Linux newbie but this seemed like a pretty n00b question. I am familiar with Postfix/Dovecot setups but now I am looking for the simplest way to access mail on a Linux system, such as the mail that goes to /var/mail/root. I know I can edit /etc/aliases and have the system mail go straight... (6 Replies)
Discussion started by: TayKimchi
6 Replies
LEARN ABOUT OSF1
false
true(1) General Commands Manual true(1)NAME
true, false - Returns a standard exit value
SYNOPSIS
true
false
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
true: XCU5.0
false: XCU5.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
DESCRIPTION
The true command returns a 0 (zero) exit value. The false command returns a nonzero exit value. These commands are usually used in input to
shell commands.
NOTES
The special built-in utility : (colon) is sometimes more efficient than the true command.
EXIT STATUS
[Tru64 UNIX] The nonzero value returned by the false command may vary from system to system.
EXAMPLES
To construct a loop in a shell procedure, enter: while true do date sleep 60 done
This procedure displays the date and time once a minute. To stop it, press the Interrupt key sequence.
SEE ALSO
Commands: csh(1), ksh(1), Bourne Shell sh(1b), POSIX shell sh(1p)
Standards: standards(5)true(1)
09-14-2011
