Questions tagged [unix-shell]
The unix-shell tag has no usage guidance.
122
questions
0
votes
0answers
11 views
tcsh history behaves different on SLES and RHEL/CentOS - unintended commands appears in history on SLES
I have multiline alias in my tcsh environment, like the following:
alias my_alias 'set flag="\!*" \
if ( $flag == 1 ) then \
...
1
vote
1answer
151 views
How to reliably & portably serialize binary information into POSIX shell
Problem context
I am trying to implement a job orchestrator whose agent/worker programs, connect to machines via an SSH session/shell. I would like to transfer (potentially binary) files to these ...
0
votes
1answer
108 views
My Server is sending malicious SSH requests [duplicate]
I am facing weird issue on my server (Unix). There are couple vendors reported me that my server is sending malicious requests to their server by using SSH Protocol.
I have already checked the system ...
1
vote
3answers
79 views
Avoid to write clear password in a sh script
I'm writing shell script on my custom board. In this script I use openssl to encode file at runtime using this command:
openssl des3 -salt -in file.txt -out my_file.des3 -k my_password
Is there a ...
0
votes
2answers
32 views
What if I want to delete files that are not accessed for a few days in unix?
What if I want to delete files/folders that are not accessed for a few days in Unix?
Say there are some files that were last accessed 5 days ago in a particular location.
I want to delete those. What ...
0
votes
1answer
61 views
While schedule below script through crontab receive incorrect output date format is going wrong
PFB script
dd=$(perl -e 'use POSIX;print strftime "%Y%m%d",localtime time-172800;')
Date=$(perl -e 'use POSIX;print strftime "%d%m%Y",localtime time-172800;')
for i in `cat /path/Path_CDR.txt`
do
cd ...
0
votes
0answers
45 views
cron job not working in unix but works when executed manually [duplicate]
I am running a cron job everyday at 21:00 UTC which downloads few csv files from sftp server, renames the downloaded files and then loads the files in database(mysql) and updates the time in database (...
1
vote
3answers
48 views
text processing linux using grep awk or anything else
I want to replace in this string Wed Apr 10 06:44:10 UTC 2019 all whitespaces with comma and along with that trim off UTC part.
What I have tried :
var1="Wed Apr 10 06:44:10 UTC 2019"
echo ${var// /,...
0
votes
2answers
438 views
AWK, cut or ced…double parsing mail log to get authentication failures
I would like to parse mail log files, which originally look like this:
2018-10-23 23:27:51,026 INFO [ImapServer-4] [ip=10.10.11.50;oip=168.232.24.2;via=10.10.11.50(nginx/1.7.1);ua=Zimbra/8.8....
0
votes
2answers
48 views
How to print true if condition in shell script
I'm writing a script to change few setting according to location and to do this i selected hostname as a benchmark. My aim is, if my hostname condition comes true then do this. For this i'm writing a ...
0
votes
1answer
1k views
Convert a raw email message to plain text in linux
I'm in the cur folder of a maildir store.
I want to cat a message .. pipe it to a command .. and have the body of the message spit out. Simple.
Example:
If its a mime message .. and there is a ...
-3
votes
1answer
576 views
Solaris - How to tell whether machine is running SPARC or Intel Chip [closed]
What command can I run to tell whether SunOS 5.10 is running a SPARC or Intel chip?
4
votes
2answers
5k views
How to identify ancient KornShell version?
We had a guy retire on us, and the documentation left behind is a little on the light side. Need a little help identifying and using part an older client-server system.
The server itself is ...
0
votes
1answer
83 views
getting multiple issues while creating a scrip to update hostnames in /etc/hosts file?
I'm completely new to the scripts and hence need help to fix this.
We've around 3000 VMs & 450 Physical servers which are Linux based servers (few of then ubuntu starting from 9.x & few of ...
-2
votes
1answer
1k views
How to hide the 'dn:' value in Ldap unix shell commands?
I got a problem to solve.
How do i hide the 'dn:' part ?
dn: uid=trebbouh,ou=2017_paris,ou=2017,ou=paris,ou=people,dc=42,dc=fr
This is the command I used :
ldapsearch -x -LLL uid=$USER -W
1
vote
1answer
1k views
Pass parameter from Local to Sudo user [closed]
Ok if subject is not clear i will explain my doubt.I have a shell script kept at my local user called (executeAdM.sh), and when i execute this script i am connecting to SUDO user by taking commands ...
0
votes
1answer
116 views
FreeBSD script - different result to manual execution (tcsh)
This question has been asked previously in https://joomla.stackexchange.com/questions/20697/securing-a-joomla-installation-on-apache-mod-php but it may belong here better since it is not Joomla ...
1
vote
1answer
97 views
Linux Free Disk Space per Device
In my system, df -hT outputs something like this:
> df -hT
Sist. Arq. Tipo Tam. Usado Disp. Uso% Montado em
devtmpfs devtmpfs 1,9G 8,0K 1,9G 1% /dev
tmpfs tmpfs 1,...
0
votes
2answers
556 views
LD_LIBRARY_PATH Configuration Setup Issues
I am facing a weird but a sensible issue, I have 2 ORACLE_HOMEs, 1st one points to ORACLE Database Software and 2nd one points to ORACLE Client Software.
Why I am forced to do this - reason is: In my ...
0
votes
1answer
49 views
Continuously save tail of standard input
I have a program that generates large logs on the standard output. Actually I don't care about the log, but I do want to know the last 1000 lines or so if the program finishes or crashes.
I want ...
-1
votes
2answers
1k views
bash script to detect when a file is added to folder and command exec
I am trying to write a script to detect whenever a file is added to a specific folder and run a command using the last file added name. What I am specifically trying to do is to create a QR code for ...
0
votes
1answer
134 views
How to repeat a command, like a backreference, at the cli? [closed]
What I'd like to do is run the same command twice while hitting enter once, with minimum typing. This would be the long version for example:
# sudo puppet agent -tv --server foo.bar && sudo ...
0
votes
2answers
135 views
Unix: How to find the name of the ethernet interface through which I'm logged in
We have multihomed servers. And to simplify things, I would like to know the dns of the interface trough which I'm logged in. (e.g. to set PS1 thus it can be used in scp commands)
My solution for ...
1
vote
1answer
162 views
Can't get PID from backgrounded java job
The PID file for this statement is created but it is always empty. When running the shell with -x I see that $! empty, yet at the end the java job is left running in the background as desired. Why is ...
0
votes
1answer
343 views
remote script execution from local script linux doesn't stop for remote script prompts
script abc.sh is on machine M1 and xyz.sh is on machine M2
script abc.sh:
#!/bin/bash
ssh -l user1 host.com ./xyz.sh -b1 arg1 -b2 arg2
script xyz has certain user prompts like pwd etc
When I ...
1
vote
1answer
887 views
Why is my awk sub command failing?
When I run
df -hl | grep '/dev/disk1' | awk '{sub(/%/, \"\");print $5}'
I'm getting the following error:
awk: syntax error at source line 1
context is
{sub(/%/, >>> \ <<< "\"...
0
votes
2answers
136 views
Moving files between hosts using intermediate storage area [closed]
Is there any good existing solution for moving files from host A to host C, using host B a an passive intermediate storage area.
A -> B -> C
Limitations
Host A and host C are on separate networks ...
3
votes
1answer
123 views
Editing the PATH in PASE
I am doing a some PHP development on an IBMi running ZendServer6. I have to call PHP by its full path of /usr/local/zendsvr6/bin/php-cli. Is there a dotfile I can edit in my home directory or some ...
11
votes
2answers
13k views
cp -p will preserve times for some files but not all?
I have a source directory on a machine with a bunch of files, all with the same permissions, that I want to copy to another directory, that is mounted via SMB.
[tmark@dexter JR09141045 ...
0
votes
1answer
897 views
Executing command remotely on another linux server from a shell script
I have a shell-script which extract details from a log file between two dates and executes a command on the output to generate some report.The log files are on different server and scripts are ...
14
votes
5answers
2k views
Copy file permissions, but not files in Unix
(From : https://stackoverflow.com/questions/15245144/copy-file-permissions-but-not-files, closed because off-topic)
I have two copies of the same directory tree. They almost have the same files in ...
-2
votes
1answer
129 views
Create symlink if source exists
I'm trying to make a symlink to a directory if it exists only and cannot figure out how.
I tried various ideas I found and none worked.
Most notable idea that i thought would do the job was to use ln ...
4
votes
2answers
31k views
Kill all currently running cron jobs
For some reason my cron job scripts aren't exiting cleanly and they're backing up my server. There are currently a couple hundred processes running for one of my users. I can use the following command ...
0
votes
1answer
1k views
unable to run the script in linux using plink
I'm unable to run a script in linux using plink.exe. I'm using my user x to login and script is under y user, which I need to sudo to y and run it. I was able to at command prompt manually but not ...
2
votes
1answer
151 views
How to improve the efficiency of gnu parallel to read from a compressed stream?
Is another question extended from the previous one [1]
I have a compressed file and stream them to feed into a python program, e.g.
bzcat data.bz2 | parallel --no-notice -j16 --pipe python parse.py ...
1
vote
1answer
316 views
curl is giving wrong result via ssh
Curl is working fine on the node itself:
[ec2-user@smokebase1 ~]$ curl -s -I --retry 3 --header 'Host: smoke-base.dev-test.com' localhost:8080/test/api/search?where=where%20%2Fxml%2Fitem%2Fcategory%...
2
votes
3answers
1k views
No shell and launch application on login
I am working on migrating an application from OpenVMS to RedHat Linux 6. The application is a green screen terminal application. The users will log into Linux via SSH and the application should ...
0
votes
1answer
676 views
Fix Solaris 11 GNU tools location for RVM
I am trying to install RVM on a Solaris 11 system, the curl -sSL https://get.rvm.io | bash -s stable went through, but when I actually try to use rvm, it simply stats "ERROR: Missing GNU tools: grep ...
0
votes
2answers
151 views
redirect command executed along with output shell
I would like to redirect the command executed along with the output to a file.
for example:
#ls >ls_out.txt
ls_out.txt should be something like :
ls
file1 fil2
Thanks!
0
votes
1answer
1k views
Check processor status- check processor/cpu status and failed/off status
I want to Check processor status- check processor/cpu status and failed/off status so for that I used command prtdiag and want to fetch the cpu status only from that. how can i do that?
2
votes
2answers
225 views
Rotatelogs rotating log files mid log entry
I have a c++ tool that outputs to STDOUT via printf i.e.
printf ("%s\n", logline);
I then pipe that to rotatelogs i.e.
tool | rotatelogs /tmp/logs/log_%s 60
Everything works great, but ...
1
vote
1answer
83 views
Sent command-line output as an arguments to other command
1) Here is the command to install special package (for example system/header)
#pkg install system/header
2) ALso we can install several packages
#pkg install system/header network/ssh package/rpm
...
2
votes
1answer
5k views
How to pipe and echo the result that is being processed? [closed]
I'd like to execute this command:
find /apps/ -type f -print0 | grep -z log$ | xargs -0 grep 'this->aForm'
And in parallel, I'd like to see which files are being processed.
How to to this?
3
votes
2answers
192 views
supress expansion of * in echo
I am working on a script which dynamically executes some queries on daily basis. These queries are coming from a table in the database.
Here is the sample output of the query table:
+---------------+...
0
votes
1answer
808 views
I want to save events or logs grabbed using Inotify to a file
I need your help - using Inotify I am watching a directory for the changes like create, delete, rename and move. I want these event to be logged in a file and I want to run Inotify as a service.
1
vote
1answer
607 views
Error when using mv
I am receiving an error when trying to mv some files that really doesn't make sense. I receive this error:
mv: cannot move `thatDir' to a subdirectory of itself, `/usr/local/apache-tomcat-6.0.32/...
3
votes
2answers
4k views
How can I kill and wait for background processes to finish in a shell script when I Ctrl+C it?
I'm trying to set up a shell script so that it runs background processes, and when I ctrl+C the shell script, it kills the children, then exits.
The best that I've managed to come up with is this. It ...
1
vote
1answer
2k views
How to combine files with unix cat command based on file name, then rename?
I have a bunch of CSV files in a directory like:
modfinalak_1.csv
modfinalal_1.csv
modfinalal_2.csv
modfinalal_3.csv
modfinalar_1.csv
modfinalar_2.csv
so it's one or multiple files per each US state ...
1
vote
0answers
94 views
runas or sudo equivalent on AS400 ibm iSeries (invoke it via java code) [duplicate]
Possible Duplicate:
“runas” or “sudo” equivalent on AS400 IBM iSeries
I am trying to invoke a program to run as another user(by getting input user/pwd) in AS400 OS using ...
2
votes
1answer
2k views
'ls' taking a long time to list 20 subdirectories
I have a directory (my_dir) which has 20 sub directories. Every time I run 'ls' or try to autocomplete a file name in this directory my IO usage goes to 100% and it takes very long time (10 mins) to ...
