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    can't do apt-get upgrade

    I can't do apt-get upgrade. This is what the console shows: $ sudo apt-get upgrade Leyendo lista de paquetes... Hecho Creando árbol de dependencias Leyendo la información de estado... Hecho Tal vez quiera ejecutar «apt --fix-broken install» para corregirlo. Los siguientes paquetes tienen...
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    It does not preview the thumbnails of the mobile photos

    Hello, the problem I have is that when I connect the phone to the computer and enter the photos folder, it does not show me the thumbnails to preview the photos. It only shows me the generic icons without a photo preview. Can this be fixed? a greeting.
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    upon return from hibernation it does not keep my programs open

    when i hibernate with the command: sudo systemctl hibernate, when i reboot ubuntu, it doesn't keep me open programs like netbeans and libreoffice (which is supposed to leave open when hibernating) greetings.
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    task program with crontab.

    I want to program a task with crontab. This is the bash file: #! / bin / bash export JAVA_HOME = / usr / lib / jvm / jdk1.8.0_261 java -jar /home/luilli/Desktop/dist/table.jar and this is the crontab command: 32 12 * * * /home/luilli/firstboot.sh has permissions to run, i change them with...
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    execute .jar file on system start.

    how can i execute a .jar file automatically everytime i start ubuntu?
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    problems building a driver for a ticket printer

    hello i have a .c file that i have to build. I have the makefile which is this: ---------------------------------------------------------------- CC=gcc RM=rm -f CFLAGS=-Wl,-rpath,/usr/lib -Wall -fPIC -O3 LDFLAGS= LDLIBS=`cups-config --image --libs` SRCS=rastertoxp58.c OBJS=$(subst...
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    does not recognize the command lppasswd -a username

    hello I want to install a ticket printer on linux. I want to do it from the cups page: http: // localhost: 631 / admin. But it won't let me log in with the root username and password. I have seen that it can be modified with: lppasswd -a username. But when executing the order it does not...
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