AIX (Advanced Interactive eXecutive, pronounced "a i ex") is a series of proprietary Unix operating systems developed and sold by IBM for several of its computer platforms.

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Touch the file to future time stamp

I have created the file which is 30 minutes old by using following command TZ=ZZZ0 touch -t "$(TZ=ZZZ0:30 date +%Y%m%d%H%M.%S)" $HOME/reference Similarly how can I create a file 30 minutes of ...
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AIX memory consumption

Question: how can we report the REAL memory usage (without the cache!) using nmon or vmstat or svmon on AIX 6? nmon: vmstat: svmon: Like on Linux, we can use the free command, but it's not ...
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AIX Memory Limits

I cannot find these numbers anywhere on the IBM Web site or even random blogs that Google finds. Questions What is the maximum physical memory size a POWER7 CPU supports? What is the maximum ...
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./a.out && echo $? only prints return value if return = 0

echo $? in the following scenario does not display the return value, i.e. 1. echo "int main() { return 1; }" > foo.c gcc foo.c && ./a.out && echo $? However, echo $? works when ...
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Script or command to replace default parameters in /etc/user on AIX

I wanted to change the parameters settings in /etc/security/user file in AIX OS using a script. This is the sample user file. default: admin = false login = true su = ...
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list out owned file/directories and change its permissions

Can anyone please tell how can I change files/directories owned by me only. below is the command that list out files/directories owned by me find . -user <username>
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Other than a kill command or a system kill(pid, signal) command, what can cause a SIGKILL to occur for a process?

My process is mysteriously getting a SIGKILL on AIX. Running trace on the system indicated the process got a signal sent by itself via the kill(pid, SIGNAL) system call. I checked my code and I ...
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0403-053 Expression is not complete; more tokens expected

I have this piece of code given below as a part of my main script if [ -e /tmp/rsm/Logs/filename_$$.txt ]; then { total=0 for files in $(<filename_$$.txt); do #cd /tmp/rsm/Logs docs=`grep -i ...
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Why doesn't alias work in AIX (Korn shell, .profile)?

I have these files in my home directory: drwxr-xr-x 3 meuser staff 256 Oct 12 13:11 . drwxr-xr-x 102 bin bin 4096 Sep 30 12:28 .. -rw------- 1 meuser staff ...
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How to backup all installed software/packages on AIX?

Are there any ways to backup all the packages on an AIX 6.1 machine?
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AIX and Subversion

Very basic question regarding AIX and Apache Subversion: I need to install an Apache Subversion client onto an AIX 4.3 system. (Yes, this is a rather old version of AIX; the story is too long and ...
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968 views

Using awk to parse AIX's lsuser output in stanza format

I'm creating a simple awk script to parse AIX's lsuser -f ALL output and return information in one line. A sample of the output is something like this. root: id=0 pgrp=something ...
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300 views

File size conflict

I am new to UNIX and have a doubt about file size in UNIX (AIX). ls -ltr shows me fileA size as 59096. As per my knowledge this is in bytes ,so it is nearly = 0.06 MB However, a script which should ...
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819 views

AIX 6.1 starting xhost + from inittab at the boot time

Everytime after restarting the servers, I have to run xhost + from console prompt. Does anyone have any idea about enabling xhost + from inittab file?
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How to kill a ghost process? AIX 6.1

oslevel: 6100-05-01-1016 according to topas: root 1769602 1 93 20 112 0 128 32498:07 87.1 0 0 ldmp_pro according to ps: -bash-4.1# ps -ef | egrep -i "1769602|ldmp" ...
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Crash and exit code 721035

Where can I find what this exit code means? I have process (A) that calls program (B) using clib system(). Sometimes program (B) returns with exit code 721035 and AIX kills process A. This is random ...
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Ocaml compilation error in AIX 6.1

I meet the following error when I try to compile Ocaml on my server running AIX 6.1 : "../Makefile.shared", line 39: make: 1254-055 Dependency line needs colon or double colon operator. ...
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how to troubleshoot intermittent no route to host error

I have a program that most of the time works, but every now and then it fails with a no route to host error. The machine is running AIX 5 and has five network interfaces en1, en3, en5, en7 and en10. ...
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How to grep “block” strings out of a weird file

Command on AIX is: [root@hx042:/home/user1]$ lqueryvg -Atp hdiskpower13 0516-1396 lqueryvg: The physical volume hdiskpower13, was not found in the system database. Max LVs: 256 PP Size: ...
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Only output value if x > y in awk

INPUT: 0:root@server:/root # vmstat 60 2 System configuration: lcpu=52 mem=131072MB ent=10.00 kthr memory page faults cpu ----- ----------- ...
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Allocating VLAN to partition

Forgive me if my terminology if off, here -- I'm fairly new to AIX. I have an AIX server (6.1) running VIO, with two client partitions (e.g. CLIENTA and CLIENTB). The two partitions are running on ...
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Remove first and last character if present

I need to remove the first two characters of every line in a file ( always the same ) and the last "/" if it is present. Input is, in the file F1 : ^./inst/oracle/ ^./tmp/ ^./inst/maj/ ^./mkcd ...
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Fast question about NIMOL(nim on linux)

I want to install aix71 client using nimol,i read somewhere only 5.3 clients were supported But i found this on aix71 cd,is possible to install aix 7.1 with nimol?
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ftp: connect: The file access permissions do not allow the specified action

cannot ftp through port 21 Get below error when trying to ftp ftp: connect: The file access permissions do not allow the specified action. Has any one came across above error and having any ...
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How can I see history of the “at” command in AIX?

I'm experiencing a strange problem where occasionally the at command appears to not be running the command I've configured it to run. For example: at -t 201510071042 runsomescript <Ctrl-D> ...
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How to compile shared library on AIX

I have a simple shared library that is currently compiled on Linux using: gcc -c -fPIC foo.c -o foo.o gcc -shared -o foo.so foo.o I need to relay instructions to a colleague for compiling the same ...
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Installing Graphviz & Dependencies without Internet access

I am trying to install graphviz on AIX7.1 - I have NO internet access and I have downloaded a lot of rpm files. I want to know is there a way to install the graphviz-*.ppc.rpm packages so that the ...
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How to pass flags to IBM xlc compiler?

I want to build samba4 on aix,gcc give me error,so i want to try xlc ibm compiler But give me this error "../source4/heimdal/lib/gssapi/gssapi/gssapi_spnego.h", line 49.28: 1506-277 (S) Syntax ...
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104 views

How to investigate TCP, domain socket and similar activity of a process in AIX

I have to collect as much information as possible about a running production system under AIX 5.3. This must not cause any downtime and I may not install any additional software. The final goal is to ...
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X11 forwarding to IP doesn't work on some servers. I can't find any config differences

This command allows me to send an xterm to xming on my windows desktop: xterm -display 10.13.18.125:0 (my workstation IP) For the servers that it doesn't work with the IP, It will work for some ...
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192 views

rm: Directory resources is not empty

I'm getting this kind of error when i'm deleting file on my AIX machine. Getting same error for rmdir. venky-19:[/hm/dev/application/backup/ear/] # rm -rf resources rm: Directory ...
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Text User Interface

I have been working on a shell script, and was wondering if I can put up a text user interface for the shell script. After some searching, I see few people suggest using "ncurses/curses". However the ...
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263 views

Handle compress command error messages on AIX

I am working on production issue and unable to reproduce error message for compress command. Current Solution We have case-esac block in shell wrapper that handles messages as follows; case "$MSG" ...
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Workload partition network

I see on AIX the workload partition wpars are similar to Solaris zones,but there is a difference,on solaris zone i can ping the external network,wpars are by default isolated. Can i ping the external ...
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627 views

Start a service at boot and automatically respawn it if it dies under AIX

I'm trying to write a script that can set a service to: automatically restart after killed automatically start during boot up I can do this by using /etc/inittab but some of the AIX server ...
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sed stdin behaviour

Using sed for a direct stdin treatment of data, I expect that a line is treated after the enter. This is what happens when I test on CygWin or Linux but on my AIX, a second new line is needed to treat ...
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AIX cluster show swing filesystems

I am working on applications on an AIX 6.1 two-node cluster, with an active and passive node. Is there a command that will show me which mount points / file systems are shared and 'swing' from one ...
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129 views

Must be in the same VG

I am trying to extend the fs like this, chfs -a size=+290G /Eq7_bakcup but getting this error, what am I doing wrong? mount: Log dev and fs dev must be in the same volume group
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What is making “at” in AIX add a “cd /some/path/here” prior to my explicit commands?

When I execute the following command: cd /some/path/here at -t 201409301100 ls -al <CTRL-D> at -lov I get the following output: ======================== myusername.1411755840.a Mon Sep 30 ...
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Process status on AIX

I want to get process status on AIX like we get it on Linux from /proc/<PID>/stat, I did not find the status in /proc/<PID>/status file. There was some encrypted text there. Which file ...
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550 views

Difference between AIX and other Unix flavours [duplicate]

I am learning AIX 6-7 for practice, is there any alternative unix flavour which could be quite similar to AIX which could be run on a VMWare or Virtualbox for practice? Also, if there is any ...
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Aix grep wildcard not working

I have a file called message that has the line CSC/UT/USA/WBIMB/SAP/orders05:orders05/ORDERS05/NONE/ORDRSP/758 I am doing a grep (Platform is AIX 6.1) grep ...
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AIX OS fileset with status Broken

Does someone encounter this error in AIX version 7.1 TL3? root@TEST:/ # lppchk -v the result is: lppchk: A parsing error occured for bos.sysmgt.quota 7.1.3.0 on line 1, column 23. ...
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IBM AIX: How do I set up SSH X forwarding on an unprivileged user with no home?

Long story short: I have an AIX server where my user is unprivileged and has no home directory, and it is not easy to fix this because OS-level management of this server is outside of my jurisdiction. ...
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How different is I/O handling of hard disk in AIX and Redhat Linux?

I am running a hadoop I/O workload in redhat linux and have ran that in IBM AIX as well with same underlying hardware, disk and disk configuration. With the default settings on the os redhat linux is ...
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why cannot read /dev/console after reboot AIX

I use < /dev/console when running Micro-Focus cobol programs in background cron jobs instead of < /dev/null because then we don't get an warning about the input file not supporting ioctl. The ...
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AIX why does ps display the process name between square brackets? [duplicate]

On AIX 7 I have a process whose name appears between square brackets in the ps output: PID TTY TIME CMD 7798784 pts/2 0:00 [myproc] 9044154 pts/2 0:00 ps 10485770 pts/2 0:00 ...
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AIX auditing for LDAP users

I've discovered a problem with the way AIX uses auditclasses to determine which system calls are audited. If a user is defined in LDAP, their auditclasses attribute is blank. I found an APAR which ...
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How to disable live shell session command history under AIX 5-6?

It's okay that there are history files logging the commands that has been used. That't not the problem. The problem is that when 2 admins are logged in to an AIX server then it could be bad: If ...
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AIX multihomed multicast

On my AIX machine if I run netstat -ia I get: Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll en0 1500 link#2 1e.18.1.1e.78.2 385229 0 1091655 0 0 ...