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

learn more… | top users | synonyms (1)

-1
votes
1answer
77 views

how to set linux hostname based on flashdisk volume label [closed]

i'am running live linux, which run from FAT32 flashdisk since i run a lot of pc using this flashdisk, its difficult to identify which IP for its hostname, since its ip need to be dynamically ...
0
votes
1answer
101 views

Eliminate need for grep use only awk

I am trying to generate a list of PID's to pass to strace I only want the PID's php-fpm. I can get the correct output by using grep with awk but am looking for an awk only answer. Here is what I ...
0
votes
2answers
1k views

Capture piped multiline grep output into a variable

I'm using Zabbix's zabbix_sender.sh script to push exception stack traces to my remote Zabbix monitoring server. zabbix_sender.sh requires a key and a value for any data that it sends. It can read ...
1
vote
3answers
1k views

How do I restore the default bashrc?

I have accidentally overwritten .bashrc. I did the following echo 'export EDITOR=/usr/bin/nano' >> /etc/bashrc Bur I accidentally typed > instead of >>. I guess, it was a bad idea. I ...
2
votes
1answer
99 views

How to programatically find default ssh key?

In most of my experience, by default, ssh will look in ~/.ssh/id_rsa(.pub) for the default key pair. Ocassionally I try to write scripts to take advantage of this default key location, but I end up ...
6
votes
1answer
469 views

Providing normal users(non-root) with initialization and shutdown auto-run capabilities

I'm hosting an experimental/testing Linux box, running Debian Wheezy 7.4.0 distribution. Different users log into the machine over ssh to their accounts and are allowed to run the development tools ...
4
votes
4answers
1k views

Starting a script as another user

I've created a script in /etc/init.d/ which has to run several other scripts from other (non-root privileged) users from their home directories, as if they started them. I launch these scripts ...
0
votes
2answers
85 views

Finding a user's home from bash

I'm trying to get the value of a user's home from a puppet script. This particular user is a Samba user, not a local one, with the username of the form DOMAIN\user. I've tried the following, with no ...
1
vote
3answers
574 views

Batch rename files that end in a dot

I have a large unix fileserver, with a single large SMB share. It serves to Mac, Linux and windows clients. A large portion of the files on this box have been migrated there from a Mac Xserve. One ...
1
vote
1answer
415 views

Get some meaning from apache logs with awk and grep [duplicate]

I am trying to have some meaning from my apache log files: I want to parse my access log and have some statistics about 200 status code hits (how many times each of them was hit). So I tried to learn ...
2
votes
0answers
68 views

SNMPget and bash gives strange results (gauge32 values incorrect)

Reallly strange to me but here is the problem. If I use an SNMP client such as ManageEngineMibBrowser to query the appliance I get what look like reasonable Numbers: dpStatusMemoryStatusUsage.0 97 ...
0
votes
1answer
283 views

How to set ulimit in chroot with --userspec

I have script to create a minimal chroot (below), but I can't figure out how to get ulimit to work on the chroot'ed process: #!/bin/bash user=$1 apps="$2" cmd_to_run="$3" shift 3 ...
0
votes
1answer
60 views

Script to apply Simple Finder restrictions to Mac OS X user?

Is it possible to script (e.g. with AppleScript or bash shell script) applying the Simple Finder and an associated application whitelist to a local user account on Mac OS X? We are using Mac OS X ...
-4
votes
1answer
69 views

Killing a bash sh script [closed]

I made an .sh file load.sh which has (almost) unlimited loop of curl requests. I run this as $ bash load.sh. Now it just keeps running the loop. I can't cancel its execution. It keeps running. I ...
0
votes
2answers
41 views

Creating an environment variable for a specific user

When you set an environment variable in linux is it set only for the user who executes it, or can you specify a user when you store it, or instead is it always available for all users?
1
vote
3answers
197 views

Any Linux tool to create a repo file?

SuSE's package manager zypper is able to create repository file in /etc/zypp/repos.d/. zypper -n rr myrepo zypper -n ar -f http://path/to/myrepo myrepo I'm looking for an equivalent tool do the ...
3
votes
1answer
210 views

Bandwidth Throttling using tc qdiscs

I am trying to limit the bandwidth between a simple iperf server and client, using a third, passive machine acting as a bridge. With no interference, iperf returns a bandwidth of ~90 Mbits/sec. My ...
0
votes
1answer
121 views

Curl pressing enter or ctr+c in order to have the right response [closed]

This is a script that checks my current ip on this site: http://myip.dnsdynamic.org/ and pick the response and calls an API in order to update my dynamic ip. Here the script: curl --user ...
1
vote
0answers
87 views

Wrong PATH in init script on boot

Since the update of the System on my Synology NAS (x86), I have some problems with my startup scripts. The Bash scripts are stored in /usr/local/etc/rc.d. The scripts were executed for sure, because ...
2
votes
1answer
224 views

Bash: two commands in dollar-parenthesis don't have same behavior

I don't undertsand why, in Bash: echo $(hostname --fqdn) works, echo $(id -un) doesn't (id: –un: No such user). Backticks give the same results. Is there some good practice for using this ...
1
vote
1answer
192 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 ...
0
votes
3answers
137 views

Add an additional check (bash script) to the sshd server

Is it possible to run an additional script during the login process of the sshd daemon/server? I would like to run an additional command that uses the IP address and the username of the attempt. If ...
0
votes
1answer
171 views

Riverbed Stringray TrafficManger - API calls for Autoscaling

I am looking for advice on writing a bash script to put new server that we spin-up in AWS and get them added to our Stingrays. We are creating a new environment in AWS that will be muilt-AZ in AWS ...
0
votes
2answers
84 views

Why does this bash command sometimes return a blank string?

I have the following line to generate a random number: head -c 3 /dev/urandom | hexdump | sed -e 's/[0 a-z]//g' | head -c 1 This works fine but sometimes (very few) it returns a new line. Does ...
1
vote
1answer
901 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. ...
0
votes
1answer
121 views

Sourcing a config file in bash

I know I can source FILE or . FILE a file in Bash, but for some reason I cannot get it to load in the file. I keep seeing "No such file or directory" errors in the console. Here's the directory ...
1
vote
1answer
115 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 ...
1
vote
1answer
899 views

Alias doesn't work in script with #!/usr/bin/env php

I've some PHP scripts which are starting with #!/usr/bin/env php. The default interpreter is PHP 4.4, but the scripts need PHP 5.3, so I created an alias in ~/.bashrc: alias ...
0
votes
1answer
31 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: ...
8
votes
2answers
4k views

Start Unix screen, Run command, Detach

How can screen be used to start a new session and run a command within that session without killing that session? screen -S myScreenName runSomething I tried the above command and it says [screen ...
0
votes
1answer
269 views

install mdadm without user input in wheezy

I am switching to debian from ubuntu and setting up RAID0 on my AWS boxes using user-data. Things were working fine on ubuntu but on wheezy apt-get -y install mdadm --no-install-recommends throws ...
0
votes
1answer
154 views

Can a user be excluded from /etc/profile.d scripts?

I am having a problem using Rsync/SSH with a specific user for Amanda backups on a server. rsync -e 'ssh -i /var/lib/amanda/.ssh/id_rsa_amdump' -az otherserver:/dir/to/copy /copy/dir I have noticed ...
1
vote
1answer
46 views

“s” character not working on command prompt after bash history completion

Im using Centos 6.3 and have customised my .bash_profile with the following commands to help with history completion (and colorising the prompt): bind '"\e[A": history-search-backward' bind '"\e[B": ...
2
votes
1answer
142 views

How to find full process arguments and associated listening ports?

I can execute netstat -atulpn | grep java to find all Java processes with their accompanying ports, which is great, however I would like to also have the processes full execution arguments also shown. ...
2
votes
1answer
810 views

Terminate remote process when backgrounded ssh session is terminated

So right now I have a bash script that runs a command on a remote machine using ssh. The machine running the bash script is a Linux machine and the remote machine is a Windows machine running cygwin. ...
2
votes
1answer
286 views

BASH: alternatives to coproc [closed]

I have some scripts which use coproc to control stdout/stdin of subprocesses. Unfortunately, coproc was introduced in Bash 4.0, and on many systems I use, there is an earlier versions of bash. Are ...
0
votes
2answers
588 views

Script for search string inside the file for every one hour

I need to write a script where the particular string(alphanumeric) should be searched inside the file with every hour for whole day. And the search should not contain the previous hour results. Time ...
3
votes
2answers
551 views

How to parallelize the for loop while scp the files?

I am running my below shell script from machineA which is copying the files machineB and machineC into machineA. If the files are not there in machineB, then it should be there in machineC. The below ...
2
votes
4answers
678 views

How to migrate ssh key to new CentOS server?

We have lots of scripts that run over ssh through saved (passwordless) key pairs. Both clients and servers are CentOS 6.x.I know that if you get a new client computer (where the scripts are run from), ...
6
votes
2answers
6k views

How to keep: daily backups for a week, weekly for a month, monthly for a year, and yearly after that

I need to backup data and config files on this server, daily. I need to keep: daily backups for a week weekly backups for a month monthly backups for a year yearly backups after that All of this ...
1
vote
1answer
1k views

How to create ssl certificate for multiple domains which requires the CA root key in Linux

I have mail server. There are may domains hosted on it. I am deploying ssl certificate on it. I want that when user access there mail account using https browser should show that certificate is ...
-1
votes
3answers
103 views

How to create batch of specific number of lines in linux [closed]

I have a 10000 lines file.I want to create batches of 100 lines at a time in each different file.I know that this can be done using a while loop.But, I want to know whether it can be directly done ...
2
votes
3answers
314 views

My init script not showing up in service autocomplete

I made a init script for a ghost website. I'm using Linux Mint 16 (aka Ubuntu 13.10) When I type this, my script doesn't show up in autocomplete. sudo service f<tab> Any reason why? I get ...
1
vote
3answers
1k views

Completely reset PostgreSQL to default?

Question Is there a way to completely reset a PostgreSQL installation on Linux, so it is in the same state as when I installed it? Idea I have considered rm -rf /var/lib/pgsql/* rm -rf ...
16
votes
2answers
1k views

Is there a bash builtin for 'which'?

I've been testing a minimal Fedora install. To check the path for interpreters like python or node, I normally use which. I notice which isn't installed by default. I could add the package, but I ...
0
votes
1answer
78 views

Trouble with $PATH on debian

I think I have a problem with $PATH. I am running a shell script and it is complaining that it doesnt recognize the command even though when I run it manually it does. Shell Script: #!/bin/bash # ...
1
vote
2answers
743 views

permission denied in running script

I am running a script but there is an unusual warning: This is what happened in my console #whoami root #ls -l test.sh -rwxr-xr-x. 1 root root 1894 Feb 2 01:58 test.sh* #./test.sh -bash: ./test.sh: ...
1
vote
2answers
505 views

How to remove all messages from exim mail queue from a certain user/email

I've spend the last hour trying to figure out how to delete all messages from a certain mail address from the exim mail queue, after the queue was full of spam emails.
1
vote
2answers
1k views

Linux Bash IF conditions not processing when running as crontab

So I've made myself a little script which monitors my served directories for any PHP files which have changed. It's designed to run every 5 mins from crontab and email me any changes so that I can ...
2
votes
1answer
95 views

Bash: delete old files except one

I am using the following command to delete old backup files: find backups/ -name "bak_*.tbz" -mmin +4800 -exec rm -vf {} \; The problem: When there are no new files, than all files are deleted. I ...