inital P01 version published - Instructions are available under Moodle

2020-02-15 19:57:20 +01:00 · 2020-02-15 19:57:20 +01:00 · 2e878d8489
parent a7eda8d4b2
commit 2e878d8489
3 changed files with 82 additions and 0 deletions
--- a/P01_Bash/get-exec-list-arg.sh
+++ b/P01_Bash/get-exec-list-arg.sh
@ -0,0 +1,26 @@
+#!/bin/bash
+
+# produces a tabular output of all executables as found over the $PATH environment variable
+# - output format: [1-based index of $PATH entry]:[$PATH entry]:[name of the executable]
+#   - e.g. 6:/bin:bash
+# - the first argument (if given) is used as alternative to $PATH (e.g. for testing purposes)
+# usage: ./get-exec-list-arg.sh            # examines $PATH
+# usage: ./get-exec-list-arg.sh "$PATH"    # equivalent to the above call
+# usage: ./get-exec-list-arg.sh ".:~/bin"  # examines the current directory (.) and ~/bin
+
+# argument handling
+path="$1"
+[ -n "$path" ] || path="$PATH"
+
+# input-field-separator: tells the shell to split in the 'for' loop the $var by ":"
+IFS=":"
+
+for p in $path
+do
+    i=$((i+1))
+    [ -n "$p" ] || p="."
+    if [ -d "$p" ] && [ -x "$p" ]
+    then
+        find -L "$p" -maxdepth 1 -type f -executable -printf "$i:%h:%f\n" 2>/dev/null
+    fi
+done
--- a/P01_Bash/tab2html.sh
+++ b/P01_Bash/tab2html.sh
@ -0,0 +1,35 @@
+#!/bin/bash
+
+# produces a crude HTML table from a tabular file (given on stdin) with columns separated by ":"
+# usage: tab2html < inbut.txt > output.html
+
+awk $* -- '
+BEGIN {
+   FS=":"   # field-separator: which character separats fields in a record (i.e. in a line)
+   print "<!DOCTYPE html>"
+   print "<html>"
+   print "  <head>"
+   print "    <style>"
+   print "      table{border:1px solid black;border-collapse:collapse;}"
+   print "      tr:nth-child(even){background-color: #f2f2f2;}"
+   print "      td{border:1px solid black;padding:15px;}"
+   print "    </style>"
+   print "    <title>Tabular Data</title>"
+   print "  </head>"
+   print "  <body>"
+   print "    <div style=\"overflow-x:auto;\">"
+   print "      <table>"
+}
+{
+   print "        <tr>"
+   for (i = 1; i <= NF; i++) { print "          <td>"$i"</td>" }
+   print "        </tr>"
+}
+END {
+    print "      </table>"
+    print "    </div>"
+    print "  </body>"
+    print "</html>"
+}
+'
+
--- a/P01_Bash/tab2xml.sh
+++ b/P01_Bash/tab2xml.sh
@ -0,0 +1,21 @@
+#!/bin/bash
+
+# produces an XML file from a tabular file (given on stdin) with columns separated by ":"
+# usage: tab2xml < inbut.txt > output.xml
+
+awk $* -- '
+BEGIN {
+   FS=":"   # field-separator: which character separats fields in a record (i.e. in a line)
+   print "<?xml version=\"1.0\" standalone=\"yes\"?>"
+   print "<Table>"
+}
+{
+   print " <Row>"
+   for (i = 1; i <= NF; i++) { print "  <Col>"$i"</Col>" }
+   print " </Row>"
+}
+END {
+    print "</Table>"
+}
+'
+