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My konsole has no --new-tab option, but it has a button does the same thing. 

Usage: konsole [Qt-options] [KDE-options] [options] [args] X terminal for use with KDE. Generic options: --help Show help about options --help-qt Show Qt specific options --help-kde Show KDE specific options --help-all Show all options --author Show author information -v, --version Show version information --license Show license information -- End of options Options: --name <name> Set window class --ls Start login shell -T <title> Set the window title --tn <terminal> Specify terminal type as set in the TERM [xterm] environment variable --noclose Do not close Konsole when command exits --nohist Do not save lines in history --nomenubar Do not display menubar --notabbar, --notoolbar Do not display tab bar --noframe Do not display frame --noscrollbar Do not display scrollbar --noxft Do not use Xft (anti-aliasing) --vt_sz CCxLL Terminal size in columns x lines --noresize Terminal size is fixed --type <type> Start with given session type --types List available session types --keytab <name> Set keytab to 'name' --keytabs List available keytabs --profile <name> Start with given session profile --profiles List available session profiles --schema <name> | <file> Set schema to 'name' or use 'file' --schemas, --schemata List available schemata --script Enable extended DCOP Qt functions --workdir <dir> Change working directory to 'dir' -e <command> Execute 'command' instead of shell Arguments: args Arguments for 'command'

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So I want to know:

  1. Why it this possible that the konsole dont have an option to open a new tab but can have a button does this thing.

  2. How can I still lauch a new tab in the same window frame from command line under my current situation? What are the possible ways to fix this?

Version info:

Qt: 3.3.6 KDE: 3.5.4-26.el5.centos.1 Red Hat Konsole: 1.6.4
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  1. I'm not sure about the older Qt programs, but modern Qt framework events work on the concept of "signals and slots" (http://doc.qt.io/qt-4.8/signalsandslots.html). I'd imagine the writer/maintainer of Konsole had created the link between that button's pressed event and the function that generates a new tab, but hadn't created the link between --new-tab program option and said function (at the time).

  2. I am unsure of a way to fix this in your current situation (with the software and framework versions you have installed), however, this --new-tab option was made available in later versions of Konsole:

    --new-tab Create a new tab in an existing window rather than creating a new window --tabs-from-file <file> Create tabs as specified in given tabs configuration file

Version info:

Qt: 5.5.1 KDE Frameworks: 5.18.0 Konsole: 15.12.3

If at all possible (barring any incompatibilities with mission-critical services/programs), the simplest answer may be to just upgrade Konsole and/or KDE to a newer version.

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