Welcome to the forum.
You have done a good job of writing the script as a learner.
There are some points you could make a note of.
1) repetitive execution of the same commands should be avoided.
2) redundant code should be avoided.
3) printLogoffs and printLogons functions seems to be no use in your case. those are just printing the difference of the files which you already stored.
4) wc would print newlines, words, and bytes for the files. In your case you are taking words (lines should be more safer I guess)
5) print on screen and redirecting to the file both can be achieved on one command with tee. look for it.
Code:
who | /bin/awk '{ print $1 }' > check1 #create file to store user details
sort check1 #display users
sort check1 > userlist1 #stored outside loop so it doesn't renew every loop
Could be written as
Code:
who | /bin/awk '{ print $1 }' | sort | tee userlist1
Code:
wc changesQueryLogoffs | awk '{print $2}'
Could be written as
Code:
wc -w < changesQueryLogoffs #count words (as in your command)
wc -l < changesQueryLogoffs #count lines
For printing just the differences ( logon and logoff functions) you could just cat the files. Ditto for logon.
im trying to run the below if command
ifconfig -a |grep 10.100.120.21
gives me below output
inet addr:10.100.120.21 Bcast:10.100.120.255 Mask:255.255.255.0
i just want a basic shell which says if above exists then continue
how would i do this? (6 Replies)
Hi All,
I am new to shell scripting.
I have a variable which holds a numeric value.I have to check whether this variable holds a value between(0- 8),(8-17)(17-24).How do i write this syntax using if in shell scripting.
Thanks
Vignesh (2 Replies)
Hello,
I have this script running on cron every 20 minutes.
By 12pm daily, our system is expecting all input files to be uploaded by the script.
After this cutoff time, the script would still be running though, but i need some kind of alerts/logs to know which input files weren't received for... (1 Reply)
hi,
I am new script learner,
so my basic doubt is ,
how to store value of any command in a variable example
$ ls | wc -l
i want to stote the output of this in a variable c.
so that i can use c in if else loop.
and when do we use " ` " symbol in script..
can anyone also tell for... (5 Replies)
I have four years of shell scripting experience in AIX and HP-UX and have worked in perl scripts as well, the good part is i love scripting and so far i have been getting job offers as well.
The bad part is , shell scripting is all i know , so the kind of jobs i am getting is mostly production... (2 Replies)
Lets say I wanted to create a script that would show what people are doing on my machine using the w command and refresh in about 6 seconds. What would be the easiest way to do this? I pretty much want the script to loop until I stop it.
I'm using the BASH shell by the way.
Help is appreciated.... (1 Reply)
Im trying to make a script that simply adds a word to the last available line in a txt file without overwriting any previous lines.
Ive googled this and there are great examples but no one explain what each function does, and i dont entirely understand how it works.
Basically Im looking for... (7 Replies)
Hi all, this is my first post, so please be gentle...
I have a situation wherby I need a script that traverses known paths. Check for the modified date (n days) and then deletes all subdirs.
I have come up with this hotch potch, but as far as I can tell it seems to work.
What I am wondering... (4 Replies)
Hello,
This is basic (i think). I am trying to run a shell script which would go into each folder (folder names defined in the list) and after entering would run some commands, once done, come out of the folder and continue until the list ends.
Pretty basic and there are bunch of example online. ... (9 Replies)
Discussion started by: Zam_1234
9 Replies
LEARN ABOUT DEBIAN
platform::shell
platform::shell(3tcl) Tcl Bundled Packages platform::shell(3tcl)__________________________________________________________________________________________________________________________________________________NAME
platform::shell - System identification support code and utilities
SYNOPSIS
package require platform::shell ?1.1.4?
platform::shell::generic shell
platform::shell::identify shell
platform::shell::platform shell
_________________________________________________________________DESCRIPTION
The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.
This package allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
requirement is that the other shell (identified by its path), is actually executable on the current machine.
While for most platform this means that the architecture of the interrogated shell is identical to the architecture of the running shell
this is not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.
For applications like a code repository it is important to identify the architecture of the shell which will actually run the installed
packages, versus the architecture of the shell running the repository software.
COMMANDS
platform::shell::identify shell
This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.
platform::shell::generic shell
This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.
platform::shell::platform shell
This command returns the contents of tcl_platform(platform) for the specified Tcl shell.
KEYWORDS
operating system, cpu architecture, platform, architecture
platform::shell 1.1.4 platform::shell(3tcl)