Sponsored Content
Full Discussion: decipher shell commands
Top Forums Shell Programming and Scripting decipher shell commands Post 302679479 by RudiC on Tuesday 31st of July 2012 04:31:03 AM
Old 07-31-2012
The $ sign expands (=replaces) parameters/variables to (with) their contents. 1, 2, ... are positional parameters, of which $# is the count; $? yields the exit code/status of your last command. Read the man page of your shell.
 

10 More Discussions You Might Find Interesting

1. Solaris

decipher pstack with problem lwp

My company has a product that is running on JBoss on Solaris against Oracle 8.1.7. We are having an issue with the server process and high CPU utilization. During this time, and only during this time, we are experiencing database locks that will not let go. A 'ps -L' on the server process... (5 Replies)
Discussion started by: hosierdm
5 Replies

2. UNIX for Dummies Questions & Answers

Please help me decipher this header - I'm desperate!

I've got a really weird situation here.... the same IP address keeps popping up in porn spam that I have rec'd in 2 different email accts. It looks to me like it's coming from UC Davis, and I suspect someone there, so I am hoping you all can verify the same thing before I call the person on this... (0 Replies)
Discussion started by: christinef
0 Replies

3. Cybersecurity

How to decipher tcpdump file

Hi, I am stuck with a tricky situation in which one of my applications is flooding the network with UDP messages. The architecture of the application is not supposed to do so. Neither is there any place where the application will go into an infinite loop sending UDP messages over the network. To... (3 Replies)
Discussion started by: diganta
3 Replies

4. HP-UX

help me decipher how much memory on my box

hi, if I do top, I get Memory: 19277012K (5868296K) real, 33860312K (11294208K) virtual, 795392K free If I do swapinfo -tm I get: % swapinfo -tm Mb Mb Mb PCT TYPE AVAIL USED FREE USED dev 16384 0 16383 0% dev ... (3 Replies)
Discussion started by: JamesByars
3 Replies

5. Shell Programming and Scripting

Can BASH execute commands on a remote server when the commands are embedded in shell

I want to log into a remote server transfer over a new config and then backup the existing config, replace with the new config. I am not sure if I can do this with BASH scripting. I have set up password less login by adding my public key to authorized_keys file, it works. I am a little... (1 Reply)
Discussion started by: bash_in_my_head
1 Replies

6. Shell Programming and Scripting

Decipher Script

Hi Guys, I am running solaris and I need help in deciphering the following commands: dir_t1=`echo $0|nawk -F'/' '{print NF}'` dir_t2=`expr $dir_t1- 1` dir_t3=`echo $0|cut -d'/' -f1-$dir_t2` export dir_t2 What will be the value for dir_t3? Please help !!!!!!!!!!!!!!! (5 Replies)
Discussion started by: Phuti
5 Replies

7. Shell Programming and Scripting

Sed - Unable to decipher this.

Guys, I am going through an existing code in production and found the following lines. I have used "sed" before but am unable to decipher the following statement. :( echo ${F_NAME} | sed 's/\(.*\)............/\1/' Any help is greatly appreciated. Cheers, Sid (6 Replies)
Discussion started by: sid1982
6 Replies

8. UNIX for Advanced & Expert Users

ssh decipher a tunnel

Two question here, but it's only one on the protocol point of view. If two persons use the same key to connect to a SSH server is there a risk they can decipher the other tunnel. In other terms is that less safe than if they have two separate keys. Same question if two persons use the same user... (2 Replies)
Discussion started by: moi
2 Replies

9. Shell Programming and Scripting

Can you decipher this script ?

ssh-add -t 30 >/dev/null 2>&1 LOGNAME=`whoami` cp $HOME/.ssh/known_hosts $HOME/.ssh/known_hosts.org grep -v localhost $HOME/.ssh/known_hosts.org > $HOME/.ssh/known_hosts ssh -1 -f -l $LOGNAME -o "ForwardX11 yes" -o "StrictHostKeyChecking no" -L 6003:1.1.1.1:2222 ext-proxy-2 sleep 5... (1 Reply)
Discussion started by: llcooljatt
1 Replies

10. SuSE

can you decipher this script ?

ssh-add -t 30 >/dev/null 2>&1 LOGNAME=`whoami` cp $HOME/.ssh/known_hosts $HOME/.ssh/known_hosts.org grep -v localhost $HOME/.ssh/known_hosts.org > $HOME/.ssh/known_hosts ssh -1 -f -l $LOGNAME -o "ForwardX11 yes" -o "StrictHostKeyChecking no" -L 6003:195.244.210.107:2222 ext-proxy-2 sleep 5... (7 Replies)
Discussion started by: llcooljatt
7 Replies
ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
All times are GMT -4. The time now is 09:47 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy