Bash is the Bourne Again SHell, the successor to the classic Unix sh (shell).

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name of script within a init script

I have a script /etc/init.d/startup, where I do the following: creating a PID file that should look like: /var/run/**startup**.pid executing a screen of a java process, so I will like to create the ...
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48 views

crontab truncates file path

I try to run the following command: crontab -u root /root/iss/current/node/bin/installers/nl_brandless_selector_full_hd/nl_brandless_selector_full_hd_cron_file But I got an error like this: ...
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156 views

OSX - How can I copy a local users settings/preferences to a new mobile user

We are working on migrating all our local users to mobile accounts that are bound to LDAP. I am working on a script that prompts a user to enter their email and it creates a new mobile user and then ...
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155 views

Bash script for updating multiple servers not accepting RSA keys

In my environment I manage about 10 Linux servers that require regular package updates. I have a script written to connect to each individually and run the update. Additionally, I have RSA keys ...
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612 views

Dovecot quota-warning.sh not being excecuted

I would like to run a custom script with dovecot once the user reaches certain percents of their quota. The issue is that no matter what I try dovecot does not seem to execute my bash script. ...
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100 views

What is the Linux command to get the current PPTP ip address?

I have a Linux script that allows me to route some traffic through a VPN interface, and other traffic (from different IP) through another interface. This is my script: echo "ip route del default via ...
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65 views

cp/rsync command with destination as symlink to a directory

I am working on a cPanel backup solution at the moment. We are now informed about this exploit. Exploit : Full ROOT ACCESS to server 1.) create malicious file from, normal user account: mkdir root ...
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146 views

How can I measure the cumulative network usage of a process, from execution beginning to end

I want to measure how much bandwidth git pull uses, preferably by prefixing git command with desired program, i.e. nettally git pull Alternatively, is there some sneaky way to accumulate nethogs / ...
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244 views

Using exclamation marks in bash expansion

In bash, I build a svn command as a string with username and password options dynamically added. Some users might have an exclamation mark in their password, which might result in the following: ...
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125 views

Remote rename of a file on Samba share via Bash script

I'm running a Bash script under Cygwin, but this question applies more broadly. I have a remote file: //someremoteserver/somefile.db That "//" path is under Cygwin--it's essentially a UNC pathname ...
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778 views

Problems in monitoring file age with nagios (command substitution in filename)

In my current nagios installation I check for the existence of a remote backup through NRPE. In particular, my remote nrpe.cfg (on a Ubuntu 8.x) is: ...
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401 views

Autocompletion, history and scrolling in Byobu

I am using an Ubuntu server with Byobu. For some reason, the tab key writes a tab instead of completing commands and paths. Top arrow writes ^[[A instead of the command history. Scrolling writes ^[[B. ...
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154 views

export_bashrc() bash function to export .bashrc to a server

I am trying to write a bash function shown below.I am trying to scp my .bashrc to the target machine.I want to do modify the following function in the below two ways. 1.I want to enter the password ...
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206 views

Redhat 5 Upgrade / Sphinx Search Init Startup Hangs

I recently upgrade a VM to Redhat 5 and moved Sphinx Search to that server. For some reason when I try to start Sphinx, the startup script fails to push the searchd process to the background. I ...
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374 views

pbs/Torque interactive jobs: bash trick to run command after launch

I'm using pbs interactive jobs in bash, launched using qsub -I, and I'd like to run some command after launch. After this command is run, I'd like to continue to use the interactive reservation as ...
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20 views

rsync not behaving the same in script vs shell

Afternoon ServerFault, I have hit a problem that I can seem to reach a solution to, I currently have a backup script that is meant to rsync VMs off our VMWare box onto our backup server, the problem ...
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54 views

How can I tell a script is running under cron?

Is there a standard way to know if a shell script is running under cron as opposed to running from the command line. i.e. I'm thinking of running with more verbose output when manually kicked from the ...
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65 views

Script to Push Files

Script to Push Files Hey Guys, Thanks for always being helpful, I have another issue that I need a little insight on how to fix. See the below script I have and the error I get. I don't understand ...
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75 views

Efficient way to parse Apache Access Log for CMS logins

I've been working on a way to parse large multiple access logs (sometimes in double digit GB in size) for CMSs. Right now I just need WordPress and Joomla, but I know the types will grow over time. ...
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85 views

Monit failed to start shell script

So I am having a problem with monit starting a process this is my code: check process program_1 matching "program_1" start program = "/home/user1/files/start.sh" stop program = ...
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83 views

Execute a service as a specific user under ubuntu

I'm running a gameserver and want to start it on a screen on system start, but screen is user specific, so I have to run the command as 'user'. So I wrote this short service script which starts itself ...
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134 views

Cron occasionally fails with “grandchild #X failed with exit status 3”

I have cron jobs and every now and then they fail. Just after log message that the command has started, there is grandchild #X failed with exit status 3 message. On the next run scripts finishes ...
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39 views

NUT UPS: stop specific service on power failure

Does anybody know how to stop a service when there is a power failure using NUT? I made a custom script like this, the problem is that the script user (NUT) does not have root permissions to stop the ...
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221 views

Updating a Vyatta 6.6 box for Shellshock

A client has a few Vyatta installations that they're eventually wanting to replace with VyOS. In the interim, they're running Vyatta 6.6 (last version prior to the sale to Brocade). It's an internal ...
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164 views

Getting the passphrase to ssh-keygen

I have a new private key that I'm bringing to a docker container as part of a bash script. After copying the private key to /root/.ssh/id_rsa I wanted to regenerate the public with: ssh-keygen -yf ...
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307 views

segfault error with bash on CentOS 6

I updated bash as soon as both patches were available, and using the test script at https://shellshocker.net, I am showing fixed on all vulnerabilities except for segfault. OS: cat /etc/*release* ...
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81 views

“File not found” from bash script executed by Apache (CentOS)

I have a bash script that sets up a classpath for accessing a series of JARs (it's tf, the cross-platform, command line tool for Team Foundation Server). The file structure is something like: ...
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52 views

Password less mysql access to specified user/script only

In addition to this question: Performing root mysql operations in bash scripts I'd like to ask how to limit/allow this action (performing root administrative actions): mysql --local-path=mypath -e ...
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86 views

Cron bash script skips second do/done set

I have a script that checks IPs for ping reply then tries to run an snmpwalk on them. I am trying to schedule the script to run weekly in cron. When I run the script in the shell, it runs perfectly. ...
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52 views

init.d script appears to run but dies immediately

I registered the init.d script and when I invoke this directly /etc/init.d/gae it appears to work...PID file is created but the process is no where to be seen by the time I do a ps I have googled and ...
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287 views

How to delete all ufw rules for a certain port?

I am using ansible to configure ufw on my DB servers to only let accept connections from certain servers connection to a specific port (lets say 1234). When a server that used to have access is taken ...
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63 views

Binding timestamp value to a variable in crontab

I'm basically trying to declare a variable with a date() value in crontab as I will constantly be using the same date structure over and over, here is what my crontab looks like so far. php = ...
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342 views

Unable to clear sendmail mqueue-client

drwxr-xr-x 2 smmsp smmsp 4.0K May 6 23:31 mqueue drwxrws--- 2 smmsp smmsp 29M May 8 10:40 mqueue-client As you can see mqueue-client is filled with 29 megabytes of unsent mail. This seems to ...
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792 views

JBoss EAP 6.2 on RHEL 6: ./bin/init.d/jboss-as-standalone.sh hangs while calling via SSH

I'm using jboss-as-standalone.sh to manage JBoss EAP standalone as a service. I can start/stop the service with "service jboss-as-standalone.sh start/stop" while I'm on a terminal. But I would like ...
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25 views

prepare domain list to work with squid 3.x

the latest version of squid do not accept duplicated domains like: example.com pre.example.com --- this is no longer necessary and it requires domains to start from "." adding dot is simple: ...
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82 views

Netcat: connection lost before transfer is complete

Interesting thing with Netcat (nc) in CentOS 5 or 6 (nc-1.84-10.fc6 or nc-1.84-22.el6.x86_64). How can I work it around? I can't find a bug about this, but It models a file transfer to a remote ...
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212 views

Unable to get cron to append output from wget

I have a cronjob setup and running, but the logfile keeps getting overwritten every time it runs. I would like for the wget output to be appended each time the cron runs. Why is this and how do I fix ...
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46 views

Include executed cron command when outputting to log

Is there a way I can include the command that was executed in the output when I'm logging to a file? For example: * * * * * date && /path/to/php /path/to/script.php >> cron.log ...
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35 views

Is there a tool for indexing a directory in order to perform cheap content search? (hashing by word, for example)

I am often using grep -R on an entire directory tree to find all files that contains a specified word. I wonder if there is a tool that makes the whole operation much faster, maybe via hashing? (Unix ...
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147 views

nohup create multiple process

I am using nohup for the script run inotify command, because inotify stop when I exit from terminal so I want the script to run on background. so I run the script like this nohup /path/to/script.sh ...
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96 views

How to set multiple paths with update-alternatives

For example, the following command install java to /usr/bin/java update-alternatives --install /usr/bin/java java /opt/java7/bin/java 1 && update-alternatives --set java /opt/java7/bin/java ...
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589 views

OpenVPN run script after tunnel is set up

I'm having a hard time figuring out exactly how can I update my A records on my cloudflare account. I have already set up a script that checks for IP changes, and pushes the changes through the ...
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81 views

How to use a common library of environment variables among different languages?

We have three main languages with which we perform system tasks: Bash, Ruby, and PHP, and Perl. Four, four main languages. We use managed environment variables to provide authorization info that ...
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1answer
116 views

Close a SSH Session when it suspend

I start a ssh session on a remote host and execute a script on the remote host. The Script is an update script that change the remote IP. Now my local bash script hanging on the line with this ...
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1answer
292 views

expect script works fine standalone not from bash script

I am running a expect script,which login to a server check if iptables running and return the log file of the status. There is a hostfile also given with server list and password, expect is being ...
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360 views

screen, expect and scripted detached interaction

Trying to write a bash script which will open a screen, start a python application, and interact with the python interaction as required when it is first started. If not possible in screen, I would ...
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146 views

Deleting Files in a Zip Archive on Linux

I have a situation where I need to be able to run a script and delete specific files within a zip archive. Below is the general setup /mnt/directory /mnt/directory/Folder1 ...
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511 views

OSX terminal bash permission denied after GIT changed file permissions while cloning repo

I am a beginner at OSX/Unix command line. I have a GIT repository that was created on my OSX computer. Recently I cloned the repo and went to run a bash script within the repo via ./BashFile.sh. This ...
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94 views

What could block the output of a command?

Sometimes I'll attempt a (2>&1) redirection and some/all of the resulting output appears to be silenced. e.g. wget -O- http://localhost/test.txt 2>&1 I would expect to see a merge of ...
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221 views

Formatting a disk and creating a partition using the maximum amount of cylinders through bash

Usually we would use parted or fdisk to create a new partition, but in my case I want to do this non-interactively in a script. An interactive fdisk session would look like this: # fdisk /dev/sdb ...