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

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1answer
203 views

Is the Datadog install script safe to run? [closed]

I have a production server (CentOS 6, Apache, Nginx, MySQL, PHP, wordpress). I want to see some metrics (e.g., load bandwidth, RAM, CPU and so on). I chose a Datadog for this task. The instructions ...
2
votes
2answers
620 views

How to bypass sudo

I am trying to script a non-interactive install of Meteor (JS Framework) and part of the script prompts for sudo . I cant seem to get past it w/ my scripting skills. The install is : curl ...
4
votes
2answers
4k views

Can I use rsync to create a list of only changed files?

I am using rsync in a bash script to keep files in sync between a few servers and a NAS. One issue I have run into is trying to generate a list of the files that have changed from the during the ...
3
votes
1answer
84 views

In tar how can I exclude dir contents but leave empty dir

I want to create a tar file excluding certains folders who have many sub-folders and files, but leaving only the main folders that's being excluded. Explaining: -project |-dir1 |-dir2 |-cache ...
-6
votes
1answer
72 views

Get rid of the ubuntu thing that suggests what packages you should install [closed]

I'm finding myself in the unfortunate place of using Ubuntu as a server OS and its tendency to suggest what packages I should install and how to install them when a program I enter in the shell isn't ...
-5
votes
2answers
61 views

Bash Script that downloads a file and checks the value if 1 or 0 [closed]

I need a Bash Script for Debian which downloads a file, that file containts 1 or 0, 1 when the services is running, 0 when not. So how can I check if the file contains 1 or 0?
3
votes
1answer
129 views

a2ensite through shell script

I created a small script to add websites on my server and it looks like this: #!/bin/bash echo "<VirtualHost *:80> ServerAdmin admin@example.com ServerName $1 ServerAlias www.$1 ...
0
votes
1answer
318 views

Where is this bash shell alias being configured?

While logged in as root onto a CentOS 6.5 system, I run ># alias alias cp='cp -i' alias l.='ls -d .* --color=auto' alias ll='ls -l --color=auto' alias ls='ls --color=auto' alias mv='mv -i' alias ...
-1
votes
2answers
167 views

Delete all files except the newest of each day

I have dump directory that is filled at the rate of one file per 4 hours. I wish to keep all files for a week then delete all except the newest of each day. Bash is preferred though other solution ...
2
votes
5answers
2k views

Run local script over ssh

silent ssh is setup from server A to server B (and some 500 other servers) I have written a script on server A (shell and perl) that I want to execute via ssh on server B (and the other 500 servers). ...
0
votes
1answer
128 views

Modify the command line that gets saved to history / .bash_history in Linux

When commands are saved to history in Linux, is there some way to prepend the command line in the history with the remote SSH IP address and process ID so that it's easy to group commands from the ...
0
votes
1answer
345 views

run multiple instance of same php script from bash

I am running a cron job to execute a php file multiple times per minute like this * * * * * /usr/bin/php /var/www/html/myFile.php >> /var/www/html/cronlog 2> /dev/null * * * * * ...
1
vote
2answers
78 views

I need to augment my output to include cat-ing a file in this Bash script

I have a script querying a remote server based on user input and looks for the last modified date of a file. It works, however, contained in the file is a string that I need to have displayed as well ...
0
votes
1answer
60 views

How to add a line to a file within a specific section by using a bash script?

I'm writing a bash script which will eventually automate user configuration for Apache. I have this part of the apache configuration (httpd.conf): NameVirtualHost X.X.X.X:80 <VirtualHost *:80> ...
0
votes
1answer
1k 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 ...
1
vote
2answers
895 views

Systemd exits from bash scripts that execute commands that result in failure, instead of continuing

I'm trying to get a script that pushes up my system log on CoreOS to logentries. To compensate for the fact that instances don't have internet connectivity right away when being spun up on AWS I've ...
1
vote
2answers
2k views

Can't run AWS CLI from CRON (credentials)

Trying to run a simple AWS CLI backup script. It loops through lines in an include file, backs those paths up to S3, and dumps output to a log file. When I run this command directly, it runs without ...
1
vote
1answer
251 views

How do I properly escape an rsync exclude pattern used in a bash script?

Script: #!/bin/bash site=$1 remote_host=$2 new_site=${3:-$1} cmd="rsync -rlpuvz -e ssh /www/$site/ $remote_host:/www/$new_site --force --delete --exclude=\"site/web_sitemap_*.xml.gz\"" echo $cmd ...
3
votes
8answers
352 views

list linux partition names only in bash

df on linux lists the following stats on partitions. -bash-4.1# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda3 1918217320 1473337340 347440136 81% / ...
2
votes
3answers
144 views

Can I use Bash interpreter in service/daemon scripts?

I'm writing a Debian/Ubuntu service that should start on at runlevel 2-5. Most of the existing services I came accross are written using /bin/sh (Shell) interpreter while /bin/bash (Bash) offer lot ...
2
votes
2answers
167 views

/bin/sh: difference between variable and direct command

Imagine i have following bash script: #/bin/sh #next line will work correctly, outputting user name and current directory start-stop-daemon --start --exec /bin/su -- root -c 'whoami; ls' ...
0
votes
1answer
68 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 = ...
-2
votes
1answer
2k views

Bash script to install packages and report to log file [closed]

I want to be able to log result of running bash script to file. Script itself is pretty simple, its used to install basic packages on fresh install machines and it scheme looks like this sudo apt-get ...
2
votes
1answer
946 views

Bash script match grep output and send message

I am developing a script for monit status checking so I can send OK status messages to NagiOS NSCA server (passive checks). The problem I am having is that my bash script still sends messages if the ...
0
votes
2answers
53 views

Assistance with bash functionality

I need to access data from a server that is behind a proxy. Thus, I can normally ssh to the proxy and then ssh to the destination to perform administration. However, not sure how to achieve this in ...
1
vote
1answer
52 views

BASH: append loop output to an email [closed]

I want the output of this script to be a body of the email message but I don't want to redirect it to a file first and then to an email, basically no external login/output files - all action should be ...
0
votes
7answers
649 views

better way to loop through a list of servers

I regularly do things where I loop through a list of servers to take some action. For example: for s in `cat servers.txt` ; do echo; echo $s ssh $s 'do something' done I'm wondering (from a ...
1
vote
1answer
107 views

rsync not deleting Folders in destination

I know there are some questings with the same topic here but no answers helped me. First, this is my script. It should copy all files from the source to the destination (preserving all rights, etc). ...
1
vote
0answers
47 views

Odd behaviour with varnishlog and stream redirecting

I wrote a helper to debug varnish installation and have used it on both production and development server. The odd thing is, I encountered different behaviour even though the setup is nearly identical ...
0
votes
1answer
93 views

Bash function hangs while command run perfectly without function

Following function hangs : ssh() { local RESULTS; RESULTS=$(ssh $USERNAME@$SERVER $SSH_COMMAND1); echo $RESULTS; } ssh; while if i run following commands they work fine : ...
0
votes
1answer
68 views

Bash — Using a character-based graphical utility to store output

I'm using bash to script a remote dialing program in an Ubuntu(14.04) server and I am having some significant trouble trying to read the output from it. I would like the program to execute as I would ...
1
vote
2answers
271 views

Backup Ubuntu server with cron/rsync: Problems with resuming large files

I currently have a dedicated Ubuntu backup server which wakes itself up from suspend (using rtcwake) daily. 5 minutes later a cron BASH job kicks in, using rsync to pull files from various network ...
-4
votes
2answers
59 views

Linux User generation script [closed]

Was wondering if someone could point me in the right direction. I'm wanting to create a simple bash script to create user account. The script will need to prompt the admin for a username and ...
0
votes
0answers
42 views

Ctrl-C is ignored by pppd when put in a shell script

I'm trying to connect to GPRS network through a serial port connected GSM modem. When I call /usr/sbin/pppd call <peer_name> from the command line, It correctly receives and handles Ctrl+C from ...
0
votes
2answers
1k views

How to use the new ifdown and ifup?

I would like to change the MAC address on a Fedora 2o webserver, but it seams that ifdown and ifup doesn't work like they used too before systemd were introduced. This is what I would like to do ...
0
votes
3answers
953 views

Tail a file from ssh and mirror to a local file

To tail a file over ssh, I can use ssh -t remotebox "tail -f /var/log/remote.log" However, it is possible to sync the tail with a local file? So a file automatically mirror the update of the tail ...
1
vote
1answer
85 views

BASH: bz2 to gzip conversion with find

I would like to convert a muliply bzip2 files to gzip format. I achived this with foor loop but I would like to do the same with find: BASH for loop: for i in $(ls -1 *.bz2); do echo "Converting: $i ...
2
votes
2answers
84 views

Two databases synced backup

I got a system that need two databases to work. I need a script to backup both databases at given point of time. I need databases to be in sync, so I need to be sure that backup does not allow changes ...
4
votes
5answers
535 views

Hide the output of a shell command only on success?

Hiding the output of a shell command usually involves redirecting stderr and stdout. Is there any builtin facility or command which by default hides the output but on error dumps all the accumulated ...
4
votes
3answers
340 views

Understanding the different directory sizes

When comparing root@debian:~# du -s /backup/test1/ 5605364 /backup/test1/ two directories with du, root@debian:/etc/init.d# du -s /data/test1/ 5605360 /data/test1/ du tells me that there is a ...
-1
votes
3answers
50 views

Limiting permissions of a file owner

I would like some assistance on what happens when you set the ownership of a file for the owner. AKA. chmod 400 would mean only the owner can view it and no one else can do anything with it. However, ...
0
votes
1answer
50 views

How to download a file in bash from a download PHP script? [closed]

For example, a file named nerdtree.zip that can be download by running this link in browser: http://www.vim.org/scripts/download_script.php?src_id=17123
0
votes
2answers
5k views

Script SSH to router and “enable” and run commands

I have a script that will ssh to a list of routers and run commands from commands.txt. I want to enable after I connect to the router through ssh before I execute the rest of my commands in ...
1
vote
1answer
3k views

Fork a process inside a bash shell script

I've a simple shell script like #!/bin/bash sh -c "sleep 60" & exec sleep 120 In using the pstree command, I found something like `-sleep(11681)---sleep(11682) The first sleep is due to the ...
8
votes
7answers
639 views

Find directories, where files with a specific ending are missing

I want to display all directories, that do not contain files with a specific file ending. Therefore I tried using the following code: find . -type d \! -exec test -e '{}/*.ENDING' \; -print In this ...
1
vote
0answers
90 views

pam_exec not working? cannot allocate 2 bytes?

I am trying to run a script during the login process using PAM and libpam_exec; I have added this line to the desired file under /etc/pam.d/: auth required pam_exec.so debug log=/var/log/debug ...
1
vote
3answers
440 views

locale-gen with purge does not work

I use the --purge option to remove existing locales before generating new one, but seems cannot remove existing locales? e.g. # locale-gen --purge en_US # locale -a C en_AG en_AU.utf8 en_BW.utf8 ...
0
votes
1answer
923 views

ways to automatically fix line endings in shell scripts or files who break with ^M

Problem We regularly break our files lines endings and things stop working without us noticing. Bash complains about "invalid option" or ": command not found" as described here: ...
1
vote
2answers
119 views

Rsync plugin to many local wordpress installs via script or cli

I am maintaining a large number of wordpress installs on a production server, and we are looking to deploy InfiniteWP for managing these installs. I am looking for a way to script the distribution of ...
1
vote
4answers
336 views

How to make a copy of /proc/xxxxx? [closed]

A users account have been hacked on one of my servers, where the hacker have started some spam binaries. Before I kill the processes would I like to make a copy of them, but when I tar czf ...