Initial commit

README.md

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+# Scripts and tools
+
+A collection of various scripts and tools, found here and there in times of need.
+
+## `colors.sh`
+
+Display terminal colors.
+
+CREDITS: [The Linux Documentation Project](http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html)
+
+## `record_bandwidth.sh`
+
+Measures the bandwidth consumed while the script is running.
+
+CREDITS: [Luke Smith's video: *A demonstration of modern web bloat*](https://youtu.be/cvDyQUpaFf4)
+
+## `slower.c`
+
+Slow down the output of a command in the terminal.
+
+CREDITS: [Landon Bland's answer on StackOverflow](https://unix.stackexchange.com/questions/290179/how-to-slow-down-the-scrolling-of-multipage-standard-output-on-terminal/290258#290258)

colors.sh

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+#!/bin/bash
+#
+#   This file echoes a bunch of color codes to the
+#   terminal to demonstrate what's available.  Each
+#   line is the color code of one foreground color,
+#   out of 17 (default + 16 escapes), followed by a
+#   test use of that color on all nine background
+#   colors (default + 8 escapes).
+#
+#   Copied from http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html
+
+T='gYw'   # The test text
+
+echo -e "\n                 40m     41m     42m     43m\
+     44m     45m     46m     47m";
+
+for FGs in '    m' '   1m' '  30m' '1;30m' '  31m' '1;31m' '  32m' \
+           '1;32m' '  33m' '1;33m' '  34m' '1;34m' '  35m' '1;35m' \
+           '  36m' '1;36m' '  37m' '1;37m';
+  do FG=${FGs// /}
+  echo -en " $FGs \033[$FG  $T  "
+  for BG in 40m 41m 42m 43m 44m 45m 46m 47m;
+    do echo -en "$EINS \033[$FG\033[$BG  $T  \033[0m";
+  done
+  echo;
+done
+echo
+

record_bandwidth.sh

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+init="$(($(cat /sys/class/net/[ew]*/statistics/rx_bytes | paste -sd '+')))"
+
+# printf "Recording bandwidth. Press enter to stop."
+
+read -r lol
+
+fin="$(($(cat /sys/class/net/[ew]*/statistics/rx_bytes | paste -sd '+')))"
+
+printf "%4sB of bandwidth used.\\n" $(numfmt --to=iec $(($fin-$init)))

slower.c

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+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+int main(int argc, char** argv) {
+    int delay;
+    char* rem;
+    if (argc > 1) {
+        delay = strtol(argv[1], &rem, 10);
+    } else {
+        delay = 500;
+    }
+
+    char* line;
+    size_t bufsize = 0;
+
+    struct timespec ts;
+    ts.tv_sec = delay / 1000;
+    ts.tv_nsec = (delay % 1000) * 1000000;
+
+    while (getline(&line, &bufsize, stdin) != -1) {
+        printf("%s", line);
+        nanosleep(&ts, NULL);
+    }
+    free(line);
+}
+