Testing for the Presence of Dependencies - commands

 

catch {exec pdfgrep > /dev/null &} res

if {![string is integer -strict $res]} {

    gnocl::dialog \
    -title "pdfSeach" \
    -text "<b>ERROR!\n\n</b> <b>pdfgrep</b> not present on this computer!\n\nInstall using:\n\n<b>sudo apt install pdfgrep</b>\n\n" 
    -type error 
    return -code error  
}