{"id":1587,"date":"2014-07-05T01:45:46","date_gmt":"2014-07-05T00:45:46","guid":{"rendered":"http:\/\/blog.spanger.org\/?p=1587"},"modified":"2014-07-21T23:10:32","modified_gmt":"2014-07-21T22:10:32","slug":"randomize-xterm-colors","status":"publish","type":"post","link":"https:\/\/blog.spanger.org\/?p=1587","title":{"rendered":"Randomize xterm colors"},"content":{"rendered":"

A bash script to randomize<\/a> the xterm colors defined in the .Xresources file.<\/p>\n

Requirements<\/strong>: An original .Xresources file. It must, among other definitions, specify all the neccesary colors in the following form (order is irrellevant):<\/p>\n

xterm*color0    :  #151503\r\nxterm*color1    :  #843706\r\nxterm*color2    :  #69750e\r\n...\r\nxterm*color15    :  #f4dfd8\r\nxterm*background    :  #211d22<\/pre>\n
Usage<\/strong>:
\nNavigate to the directory where your system’s .Xresources file is located (most likely your home directory). Make sure it complies with the listed requirements. If so, copy it into a new file to which we from now on refer as the original file. Else edit it so it does and then create the copy:<\/p>\n
 cp .Xresources .XresourcesOriginal <\/pre>\n
Now we are ready to run the script. Verify that it is located in current directory and classified executable. Then run:<\/p>\n
 .\/randXcolors .XresourcesOriginal .Xresources 10 <\/pre>\n
Fell free to replace the number 10 with any integer in range from 0 to 255. That is the limit on the randomization range. As it increases the output will in average differ more and more from the original.
\nAfter the new .Xresources is generated, you can load it:<\/p>\n
 xrdb .Xresources <\/pre>\n
Restart your xterm to see the change take place. Repeating this process a couple of times will likely provide you with a truly amazing xterm color scheme.<\/p>\n
Code<\/strong>:
\nPaste this into the randXcolor file.<\/p>\n
<\/p>\n
\n
#!\/bin\/bash <\/span>\r\n\r\n# randXcolors - a bash script to randomize xterm colors<\/span>\r\n\r\n# Operating on the standard Xresources file it changes the xterm*color* and<\/span>\r\n# xterm*background variables in order to produce a copy with colors randomized.#<\/span>\r\n# The new color definitions are placed at the end of the new file.<\/span>\r\n\r\n# args: 1. filename - Original Xresources file<\/span>\r\n#       2. filename - Output Xresurces file<\/span>\r\n#       3. integer - The radius of randomization with regard to the 255 color<\/span>\r\n#           range<\/span>\r\n\r\nusage(){<\/span>\r\n    echo<\/span> -e "Usage: $0 originalFilename destinationFilename randomRadius\\n"<\/span>\r\n    exit <\/span>1\r\n}<\/span>\r\n\r\nfunction <\/span>rgb2hex()<\/span>\r\n#args: RRRGGGBBB color, -001<RRR<256 etc.<\/span>\r\n#returns #HEXHEX color<\/span>\r\n{<\/span>\r\n    local <\/span>hex1<\/span>=<\/span>$(<\/span>printf<\/span> '%02x'<\/span> $((<\/span>10<\/span>#${1:0:3}))) #10# transf 2 dec, $1 is arg<\/span>\r\n    local <\/span>hex2<\/span>=<\/span>$(<\/span>printf<\/span> '%02x'<\/span> $((<\/span>10<\/span>#${1:3:3})))<\/span>\r\n    local <\/span>hex3<\/span>=<\/span>$(<\/span>printf<\/span> '%02x'<\/span> $((<\/span>10<\/span>#${1:6:3})))<\/span>\r\n    echo<\/span> "#$hex1$hex2$hex3"<\/span>\r\n}<\/span>\r\n\r\nfunction <\/span>hex2rgb()<\/span>\r\n#args: #HEXHEX color<\/span>\r\n#returns RRRGGGBBB color<\/span>\r\n{<\/span>\r\n    local <\/span>rgb1<\/span>=<\/span>$(<\/span>printf<\/span> '%03d'<\/span> 0x${<\/span>1<\/span>:<\/span>1<\/span>:<\/span>2<\/span>})<\/span>\r\n    local <\/span>rgb2<\/span>=<\/span>$(<\/span>printf<\/span> '%03d'<\/span> 0x${<\/span>1<\/span>:<\/span>3<\/span>:<\/span>2<\/span>})<\/span>\r\n    local <\/span>rgb3<\/span>=<\/span>$(<\/span>printf<\/span> '%03d'<\/span> 0x${<\/span>1<\/span>:<\/span>5<\/span>:<\/span>2<\/span>})<\/span>\r\n    echo<\/span> "$rgb1$rgb2$rgb3"<\/span>\r\n}<\/span>\r\n\r\nfunction <\/span>randomizeHex()<\/span>\r\n#args #HEXHEX color, randomization radius<\/span>\r\n#returns #HEXHEX randomized color<\/span>\r\n{<\/span>\r\n    local <\/span>rgb<\/span>=<\/span>$(<\/span>hex2rgb $1<\/span>)<\/span>\r\n    declare<\/span> -<\/span>a local <\/span>rgbArr<\/span>=(<\/span>${<\/span>rgb<\/span>:<\/span>0<\/span>:<\/span>3<\/span>}<\/span> ${<\/span>rgb<\/span>:<\/span>3<\/span>:<\/span>3<\/span>}<\/span> ${<\/span>rgb<\/span>:<\/span>6<\/span>:<\/span>3<\/span>}<\/span>)<\/span>\r\n    local <\/span>rgbRand<\/span>=<\/span>""<\/span>\r\n    for <\/span>i in "${rgbArr[@]}"<\/span>\r\n    do<\/span>\r\n        <\/span>local <\/span>substr<\/span>=<\/span>$(<\/span>echo<\/span> $(($(<\/span>shuf -i 0-$((<\/span>$2<\/span> +<\/span> $2<\/span>))<\/span> -n 1)<\/span> -<\/span> $2<\/span>)))<\/span>\r\n        local <\/span>sum<\/span>=<\/span>$((<\/span>10<\/span>#$i + $substr))<\/span>\r\n        if<\/span> [<\/span> $sum<\/span> -<\/span>gt "255"<\/span> ]<\/span>; then<\/span>\r\n            <\/span>sum<\/span>=<\/span>"255"<\/span>\r\n        elif<\/span> [<\/span> $sum<\/span> -<\/span>lt "0"<\/span> ]<\/span>; then<\/span>\r\n            <\/span>sum<\/span>=<\/span>"0"<\/span>\r\n        fi<\/span>\r\n        <\/span>rgbRand<\/span>=<\/span>"$rgbRand$(printf '%03d' $sum)"<\/span>\r\n    done<\/span>\r\n    <\/span>echo<\/span> $(<\/span>rgb2hex $rgbRand<\/span>)<\/span>\r\n}<\/span>\r\n\r\n#input check<\/span>\r\n[[<\/span> $# <\/span>-<\/span>ne 3<\/span> ]]<\/span> &&<\/span> echo<\/span> -<\/span>e "\\nERROR\\nWrong number of arguments.\\n"<\/span> &&<\/span> usage\r\n[[<\/span> $1<\/span> ==<\/span> $2<\/span> ]]<\/span> &&<\/span> echo<\/span> -<\/span>e "\\nERROR\\nDo not use the same file as input and"\\<\/span>\r\n    "output.\\nExiting...\\n"\\ <\/span>&&<\/span> exit <\/span>1<\/span>\r\n[[<\/span> $3<\/span> -<\/span>gt 255<\/span> ]]<\/span> ||<\/span> [[<\/span> $3<\/span> -<\/span>lt 0<\/span> ]]<\/span> &&<\/span> echo<\/span> -<\/span>e "\\nERROR.\\nThe randomization"\\<\/span>\r\n    "radius too large or too small to make any sense.\\nUse values between 0"\\<\/span>\r\n    "and 255, with less then 100 recommended.\\nExiting...\\n"<\/span> &&<\/span> exit <\/span>1<\/span>\r\n\r\n#"main" function<\/span>\r\ncp "$PWD\/$1"<\/span> "$PWD\/$2"<\/span>\r\nsed -<\/span>i '\/[Xx][Tt]erm\\*color*\/d'<\/span> "$PWD\/$2"<\/span>\r\nsed -<\/span>i '\/[Xx][Tt]erm\\*background*\/d'<\/span> "$PWD\/$2"<\/span>\r\ncount<\/span>=<\/span>0<\/span>\r\nwhile <\/span>read <\/span>l; do<\/span>\r\n    if<\/span> [<\/span> ${<\/span>l<\/span>:<\/span>0<\/span>:<\/span>1<\/span>}<\/span> !=<\/span> "!"<\/span> ]<\/span>; then<\/span> #dont touch comments<\/span>\r\n        if<\/span> [[<\/span> $l<\/span> ==<\/span> *[<\/span>Xx][<\/span>Tt]<\/span>erm\\*<\/span>color* ]]<\/span>; then<\/span>\r\n            <\/span>echo<\/span> "xterm*color"<\/span>$count<\/span>"    :  "<\/span>$(<\/span>randomizeHex "#${l#*#}"<\/span> $3<\/span>)<\/span> \\<\/span>\r\n                >> "$PWD\/$2"<\/span>\r\n            count<\/span>=<\/span>$((<\/span>$count<\/span> +<\/span> 1<\/span>))<\/span>\r\n        elif<\/span> [[<\/span> $l<\/span> ==<\/span> *[<\/span>Xx][<\/span>Tt]<\/span>erm\\*<\/span>background* ]]<\/span>; then<\/span>\r\n            <\/span>echo<\/span> "xterm*background    :  "<\/span>$(<\/span>randomizeHex "#${l#*#}"<\/span> $3<\/span>)<\/span> \\<\/span>\r\n                >> "$PWD\/$2"<\/span>\r\n        fi<\/span>\r\n    fi<\/span>\r\ndone<\/span> < "$PWD\/$1"<\/span>\r\n<\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
A bash script to randomize the xterm colors defined in the .Xresources file. Requirements: An original .Xresources file. It must, among other definitions, specify all the neccesary colors in the following form (order is irrellevant): xterm*color0 : #151503 xterm*color1 : #843706 xterm*color2 : #69750e … xterm*color15 : #f4dfd8 xterm*background : #211d22 Usage: Navigate to the […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,1],"tags":[162,164,165,41,161,163],"class_list":["post-1587","post","type-post","status-publish","format-standard","hentry","category-linux-stuff","category-nedoloceno","tag-bash","tag-color","tag-script","tag-terminal","tag-xresurces","tag-xterm"],"_links":{"self":[{"href":"https:\/\/blog.spanger.org\/index.php?rest_route=\/wp\/v2\/posts\/1587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.spanger.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.spanger.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.spanger.org\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.spanger.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1587"}],"version-history":[{"count":95,"href":"https:\/\/blog.spanger.org\/index.php?rest_route=\/wp\/v2\/posts\/1587\/revisions"}],"predecessor-version":[{"id":1692,"href":"https:\/\/blog.spanger.org\/index.php?rest_route=\/wp\/v2\/posts\/1587\/revisions\/1692"}],"wp:attachment":[{"href":"https:\/\/blog.spanger.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.spanger.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.spanger.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}