-1
votes
1answer
44 views

Can't understand loops :( [on hold]

I'm trying to understand better the while and until loops, can someone help me with this example? #!/bin/bash # Listing the planets. for planet in Mercury Venus Earth Mars Jupiter Saturn Uranus ...
0
votes
2answers
30 views

Alter output of every command

I'd like to know if there's any way of altering output of every command I execute in terminal. The purpose is to make the output formated for my markdown howto's. E.g. ls -la .*z #>-rw-r--r-- 1 ...
1
vote
1answer
23 views

echo “something” > file not working when sh script is being executed by remote PHP server

I've got a web-server with my hardcoded webpanel for Source server management and I've got my VPS on CentOS which doesn't really want to execute sh script when asked from remote server. Web-server ...
1
vote
1answer
25 views

Good way to bookmark/navigate relative directory paths?

I work on a linux system with bash 4.x where I frequently find myself navigating different copies of very deep (and large) file directory structures. However, in reality I only need to access a ...
1
vote
2answers
181 views

Why is “source <(cmd)” working but not “$(cmd)”

I want to have a script to call with params which adds some aliases to my current shell. The aliases have to be builded in respect to the calling parameters and the current directory from where I ...
2
votes
1answer
38 views

Percent sign (%) in front of shell command

I just pasted a bunch of code into my shell, but forgot to remove the leading % before running the command. It appears to have done nothing. Why does this do nothing in my shell (zsh)? > % echo ...
0
votes
1answer
29 views

Linux find files in subdirectories by extension (.txz) then move them to specified directory using regular expressions

I have mirrored a directory from a server with a large number of sub directories, each of which contain a .txz package and the usual .txt and descriptor files. What I would like to do is the ...
0
votes
0answers
39 views

How to justify and center text in bash?

Newbie here. I'm looking for bash script to center and justify text. My script only works with one line of text. How would you improve it? #!/bin/bash COLS=$(tput cols) while true; do clear ...
2
votes
2answers
175 views

How to take control back on a separate process in Linux shell?

I just set up a Minecraft server on my VPS for my brother and I ran it with a bash script : sh ./server.sh& This way, the server is running and I can still work on the same command line with ...
1
vote
0answers
53 views

Unexpected Bash glob completion uses first match even if ambiguous

If I have the following files in a directory: $ ls a-file-1 b-file-2 something-else And I type $ cat *file*<TAB> The line unexpectedly updates to $ cat a-file-1 | (pipe denotes cursor) ...
0
votes
0answers
37 views

Shell Script automatically exits from SSH section after switching of user (through pbrun command)

I have the below piece of code.. ssh some_user@server << EOF echo 'Successfully connected to the server' pbrun previlige -u user ls pwd id ...few more commands EOF if [ $? -eq 0 ] then echo ...
0
votes
1answer
23 views

What does ${file?my.file.txt} and ${file:?my.file.txt} mean in Bash?

When I read some tutorial today, I came over with the statements like ${file?my.file.txt} and ${file:?my.file.txt}, what do ${file?my.file.txt} and ${file:?my.file.txt} mean in Bash script?
1
vote
2answers
35 views

Bash parameter Expansion: Best practices for speed?

I was just wondering if anybody knows any best practices or if there is any documentation about this topic: The scenario is searching / grepping in the log files. To make my point I will use ls. So ...
0
votes
1answer
17 views

List folders by modification time of children in linux?

I have a folder, we'll call it /scripts/, that contains subfolders for a number of different scripts (let's say /scripts/file_export, /scripts/record_ingest, /scripts/stats). Inside these folders are ...
1
vote
1answer
40 views

Bash - list files within date range

So far I've been basing my efforts around this blog and have come up with: startdate=”201407010000? enddate=”201408010000? touch -t $startdate ./startdatefiles touch -t $enddate ./enddatefiles find ...
0
votes
2answers
27 views

How to make a copy of file in the same directory

This creates a file in the same directy as 'some.file.bak'. find /home/ -ipath "*/temp/some.file" -type f -exec cp {} {}.bak \; How to make a copy in another name such as 'another.file' in the ...
0
votes
1answer
12 views

Bash expansion to list from a directory

I tend to work on multiple projects, all stored inside my home (~) directory inside a directory called web. At one point all my projects were inside a single directory inside this; so to move from ...
2
votes
1answer
59 views

How to diff the redirection of two commands in a shell script

in the command line I can diff the output of two commands with $ diff <(cmd1) <(cmd2) but if I put this in a shell script $ sh do_two_comands_diff.sh It does not work $ diff <(ls) ...
2
votes
1answer
26 views

Easily print out a spaces between larger data outputs in bash

I'm grepping through a very large web directory, and when I do multiple greps in a row, when scrolling up, it is difficult to tell when one result ends and an other one starts. I tried just clear, ...
0
votes
4answers
18 views

How do I close stdin in a shell script?

I have a misbehaving program that I need to call from my script. It exits as soon as it sees something on stdin. Is there a way to close stdin?
0
votes
2answers
129 views

Shell script to SFTP file to remote server

This is probably a question asked before, but I can't find a good question/answer. I need to write a shell script that will be called by PHP program (exec function) to move all *.pdf files to a remote ...
0
votes
3answers
51 views

Why is this echo command not working?

I want to overwrite /etc/postfix/master.cf with my own content. I'm using echo "<content>" > /etc/postfix/master.cf to try and accomplish this. But when I do: echo "# # Postfix master ...
0
votes
2answers
65 views

How to execute multiple multiline mysql queries with a shell script?

I want to run multiple MySQL queries from a shell script. I'm using the following code: mysql -u <redacted> -p<redacted> servermail << EOF CREATE TABLE `virtual_domains` ( `id` ...
0
votes
2answers
60 views

How can I colour-code files and directories in my shell environment?

I've seen many screencasts online in which the files and directories are colour-coded differently for ease-of-use. I'd like to achieve the same on in my bash terminal, on OS X 10.9 and using iTerm2. ...
1
vote
4answers
496 views

Shell script: ssh to remote machine, then exit: 'exit' does not work

I have a shell script of the following type: #!/bin/bash ssh mylogin@myremotemachine.com echo "Hi" exit I run it locally to do something on a remote server (represented by 'echo "Hi"'). However, ...
0
votes
1answer
21 views

Surpress execution trace for echo command?

I'm running shell scripts from Jenkins, which kicks off shell scripts with the shebang options #!/bin/sh -ex. According to Bash Shebang for dummies?, -x, "causes the shell to print an execution ...
0
votes
1answer
33 views

How do I make sure that bash (not tcsh) is used in Linux?

I have a bash script where I use ssh to connect to another server and run some commands there. I found some sites that the error (Warning: no access to tty (Bad file descriptor). Thus no job control ...
1
vote
1answer
22 views

What's the soonest I can send a signal to a background process (trap)?

I have a script from which I run a second script in a subshell. What's the soonest that can send a signal to the second script? script1: ./script2 & kill -SIGCONT $! script2: echo "~~ ENTRY" ...
1
vote
1answer
30 views

Shell, subshell, source, background process, PID == confusion

I am trying to get my mind straight as to how all these things are put together. For example with this script: #!/bin/bash . script1 ./script2 . script3 & ./script4 & sleep 5 How do the ...
0
votes
1answer
46 views

How do I build a script shell to send cmd via telnet and log only results?

I would like to make a shell script that can call a range of IPs via telnet, to send a command, and write the result to a file.
0
votes
1answer
24 views

Weird output in my mac iTerm bash shell. How do I make it clean?

Setting up my bash and made some mistake. Here is my bash shell: android-c26f663baae722eb:~ okyretina$ I have used a clean .bash_profile and sourced it and the shell still have that weird ...
0
votes
0answers
60 views

Automaticly run xinit from rc.local as different user

I'm working on some tuning of my raspberry pi b+. So I decided that midori should start automaticly after autologin. With startx it works without problems, but X is still to ressource hungry. So I'll ...
2
votes
3answers
66 views

Why is this sudo command try to run in /root?

I try to run a sudo command via SSH like this: ssh domain.com sudo -u user bash -c "cd /home/user/ && ls" (which is obiously just an example). I get back: /home/user/: line 0: cd: /root: ...
0
votes
1answer
26 views

How to get when run `top` command ports listed?

How to get when run top command ports listed ? I get info about process but I need port to see ( process dies very quickly , 0 seconds, and I cannot grep after ps aux ). Is possible to top command ...
0
votes
5answers
49 views

History in bashrc on login vs manual sourcing - clearing and loading

I use a bunch of different aix machines at work and need to share users with co-workers. To make my life easier but not bother others with my customizations, I have created a .bashrc file that I copy ...
0
votes
1answer
46 views

Memory usage of a process in a shell script

I want to find out the memory usage of a process in a shell script.I tried to use this piece of code : while[process] do if [ -e /proc/$pidno/statm ]; then m=`awk '{OFS="\t";print ...
0
votes
2answers
93 views

Linux zip and exclude directory in Bash script

I am trying to write a bash/shell script to zip up a specific folder and ignore certain sub-dirs in that folder. This is the folder I am trying to zip "sync_test5": My bash script generates an ...
2
votes
3answers
73 views

In a Linux shell, why does backslash-newline not introduce whitespace?

When using the Linux shell, I come across the following situation: $ A=B\ > C $ echo $A BC In my mind, when the newline encountering escape character, it can not be a CR character but it still ...
0
votes
0answers
32 views

Writing a secure login script

I'm trying to write a secure login script to allow a user to have limited access to a server and change particular options. My method for doing so is via a python script executed by the users ...
0
votes
0answers
23 views

how to detect availability of GUI

For Linux: I have a text mode installation (bash) script and a graphical mode setup program (a Free Pascal binary). I'd like to run the graphical setup when a GUI is available. How do I detect which ...
1
vote
1answer
80 views

alias not working with my mongo --eval command

I have the following mongo shell command to delete all users that aren't admins mongo --eval 'db.users.remove({group:{$ne:"admin"}})' collection This works. I want to create an alias for this ...
0
votes
1answer
29 views

How can I move a specific folder if there is a file with the same name in bash script?

I'm trying to write a shell script that finds a specific file and moves it to a folder. #!/bin/sh echo -n "/home/cosmoretro/movie/" read text2 while : do echo -n "Ara:" ...
0
votes
2answers
50 views

Renaming files from a list of filenames

I'm still very new to shell scripting so I'm sure this command is all kinds of wrong. I am trying to rename a folder of files to the names in a txt file. The precondition is that the filenames.txt and ...
0
votes
2answers
60 views

Crazy terminal behavior

I am trying to run a script to rip all the audio from a bunch of MP4 files. Everything works when I do it line by line cutting and pasting from my text editor into terminal, but when I create a shell ...
0
votes
1answer
71 views

Tried Installing ZSH through cygwin and then trying to use zsh through Cmder

I tried to install Cygwin (64 bit version) on my computer, and it went through hunky-dory until at the very end, autorebase.bat failed with exit code 1. I read through the logs and they weren't too ...
0
votes
1answer
19 views

psql ignores my PAGER variable

I want to use less as my default pager. Therefore I have PAGER=less in my .bashrc. It's sourced properly: $ echo $PAGER less However, psql still uses more if I call it with psql. BUT: If I call it ...
1
vote
4answers
66 views

How to rename a lot of files in bash shell?

Sorry for the question. I searched the internet a lot, but couldn't find an answer which worked (though there were a lot of suggestions). So, I want to rename A LOT of files. Writing all file names ...
0
votes
1answer
48 views

stop all child processes when 1 of then returned exit code 1

I have 2 or more build processes to run in background. I want to stop all the build processes if one of them exit with code other than 0. ./build-1.sh & ./build-2.sh & ./build-3.sh & wait ...
0
votes
0answers
20 views

Access script arguments from within script [duplicate]

I have a script that I can run like this: bash myscript.sh -ram 4096M -jar something.jar -dir /home/something I would like to be able to access the variable ram, jar, and dir from within the script. ...
0
votes
1answer
51 views

CentOS 6 - Send user defined command from PHP

I have a web control panel and I need my allow my users to send commands to their application. I a similar problem to SQL injection. $user_input='good command'; shell_exec('tmux send-keys session1:0 ...