linux - Bash reading from file and parsing each line -

-

this question has answer here:

i need manage updates of particular software on several customers' linux servers. updates provided sending .tar.gz files each server , inflating overwriting old software files.

i've put customers' server list in txt file this:

user1@customer-server-1-address:22:/path/to/software/server1:null:customer1name  user2@customer-server-2-address:2222:/path/to/software/server2:/etc/vpnc/client1.conf:customer2name  user3@customer-server-3-address:22:/path/to/software/server3:null:customer3name

char ":" acts field separator; field 1 server address, 2 port, 3 path software, 4 used tell if vpn tunnel enabled first, 5 customer name.

i've managed create following script:

#!/bin/bash  [...]  while ifs=':' read -ra array;     if [ "${array[3]}" != "null" ];         echo         echo "### using vpn conf '${array[3]}' server '${array[0]}'... ###"         sleep 1         #vpnc ${array[3]}         tunnel1=$(ifconfig | grep -o eth0)         tunnel2='eth0'          if [ "$tunnel1" = "$tunnel2" ];           echo "### tunnel ###"            scp -p${array[1]} $filename.gz ${array[0]}:${array[2]}           scp -p${array[1]} $filelist ${array[0]}:${array[2]}            ssh -p${array[1]} ${array[0]} 'cd '${array[2]}' && cat '${array[2]}'/'$filelist' | cpio --quiet -h ustar -o -0 -l -f '${array[2]}'/'$backup_filename           ssh -p${array[1]} ${array[0]} 'gzip '${array[2]}'/'$backup_filename            ssh -p${array[1]} ${array[0]} 'tar -c '${array[2]}' -xf '${array[2]}'/'$filename.gz           ssh -p${array[1]} ${array[0]} 'cd '${array[2]}' && mkdir -p '$remote_backup_directory' && rm -f '$filelist' && mv -f '$backup_filename.gz $remote_backup_directory            echo "### server '${array[0]}' updated ###"           #vpnc-disconnect           sleep 1         else           echo "### vpn error in server '${array[4]}' ###"         fi     else         echo          scp -p${array[1]} $filename.gz ${array[0]}:${array[2]}         scp -p${array[1]} $filelist ${array[0]}:${array[2]}          ssh -p${array[1]} ${array[0]} 'cd '${array[2]}' && cat '${array[2]}'/'$filelist' | cpio --quiet -h ustar -o -0 -l -f '${array[2]}'/'$backup_filename-${array[4]}         ssh -p${array[1]} ${array[0]} 'gzip '${array[2]}'/'$backup_filename-${array[4]}          ssh -p${array[1]} ${array[0]} 'tar -c '${array[2]}' -xf '${array[2]}'/'$filename.gz          ssh -p${array[1]} ${array[0]} 'cd '${array[2]}' && mkdir -p '$remote_backup_directory' && rm -f '$filelist' && mv -f '$backup_filename-${array[4]}.gz $remote_backup_directory          echo "### server '${array[4]}' updated ###"         echo     fi; done < "$customer_servers_file"

$customer_servers_file container file described earlier, $filename.gz update package, $filelist list of files update. other variables set other purposes.

problem is, whole thing running only first customer in $customer_servers_file. lines above first being skipped, , can't tell why. hints? thank you.

edit: answer duplicate objection, being script rather large didn't think of link between while , ssh objects. rather thinking more of syntax error. however, can still delete question if asked so.

this happens because while read loop , ssh both read stdin.

you can fix using /dev/null ssh's stdin:

ssh host cmd  < /dev/null

Comments

Post a Comment

Popular posts from this blog

c++ - OpenCV Error: Assertion failed <scn == 3 ::scn == 4> in unknown function, -

-
i read alot other solution still confused should mine... #include <opencv2/objdetect/objdetect.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <iostream> #include <stdio.h> using namespace std; using namespace cv; int main(int argc, const char** argv) { //create cascade classifier object used face detection cascadeclassifier face_cascade; //use haarcascade_frontalface_alt.xml library face_cascade.load("haarcascade_frontalface_alt.xml"); //setup video capture device , link first capture device videocapture capturedevice; capturedevice.open(0); //setup image files used in capture process mat captureframe; mat grayscaleframe; //create window present results namedwindow("outputcapture", 1); //create loop capture , find faces while (true) { //capture new image frame capturedevice >> captureframe; ...
Read more

php - render data via PDO::FETCH_FUNC vs loop -

-
i've been using 2 methods render data. the first one: function name($id,$name){ return '<div id="'.$id.'">'.$name.'</div>'; } echo implode($pdo->query("select id,name user")->fetchall(pdo::fetch_func,'name')); the second one: $users = $pdo->query("select id,name user")->fetchall(pdo::fetch_obj); foreach($users $user){ echo name($user->id,$user->name); } i don't understand how pdo::fetch_func works. tried figure out. however, not well-documented. could please explain fetch mode? , also, 1 performs better? thank you. both methods wrong , have learn how use templates , how separate business logic presentation logic. $users = $pdo->query("select id,name user")->fetchall(pdo::fetch_obj); tpl::assign('users', $users); is code business logic part. then in template <?php foreach $users $row): ?> <div id="<?=$...
Read more

The canvas has been tainted by cross-origin data in chrome only -

-
uncaught securityerror: failed execute 'getimagedata' on 'canvasrenderingcontext2d': canvas has been tainted cross-origin data i getting above error in chrome. code(following) works fine in mozilla. have not corss domain issue. why above error in chrome? var wheel_canvas, wheel_context, can_w, can_h, wheel_grd; var large_radius = 160; var small_radius = 120; var wheel_canvas = document.getelementbyid('wheel_canvas'); var wheel_context = wheel_canvas.getcontext('2d'); var can_w = $(wheel_canvas).width(); var can_h = $(wheel_canvas).height(); var centerx = can_w / 2, centery = can_h / 2; var wheel_grd = null; test('#ff0000'); function test(hex) { $('#clrpicker').css({'left': 210, 'top': 210 }); inverted = hexbw(hex); $('#color_val_show').val(hex); current_color_hex_val_selected = hex; $('#color_val_show').css({'color':inverted,'background':hex}); fillgradient...
Read more