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--- bash_-_scripts:thead [2016/11/09 12:01] – created peter
+++ bash_-_scripts:thead [2019/11/29 11:17] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Bash - Scripts - thead ======
-**thead** prints the first few lines of text files that are located in this the file tree.
-The first few lines of a file can provide enough information to identify the contents of the file.
-A full list of filenames can be piped to thead.
-===== Usage =====
-<code bash>
-thead [dir...]
-</code>
-or
-<code bash>
-find $HOME/src -name "*.c" -print | sort | thead
-</code>
-===== Code =====
-<code bash>
-#!/bin/bash
-#
-#  @(#)  thead v1.0 Prints header of files in tree.
-if [ "`echo $1|cut -c1`" = "-" ]
-then  echo "$0: arg error"
-       echo "usage: $0 [dir ...]"
-       exit 1
-fi
-case $# in
-)  while read FILE
-     do
-         if file $FILE | fgrep text >/dev/null 2>&1
-           then  echo "\n:::::::::::::::::::::"
-                 echo " $FILE"
-                 echo "\n:::::::::::::::::::::"
-                 head -15 $FILE
-         fi
-       done;;
-  *)  for NAME in $*
-      do
-             find $NAME -type f -print | sort | wile read FILE
-             do
-                     if file $FILE | fgrep text >/dev/null 2>&1
-                       then  echo "\n:::::::::::::::::::::"
-                             echo " $FILE"
-                             echo "\n:::::::::::::::::::::"
-                             head -15 $FILE
-                     fi
-             done
-      done;;
-esac
-</code>
-===== Example Usage =====
-<code bash>
-thead $HOME
-</code>
-<code bash>
-find $HOME -name "*.c" -print | sort | thead
-</code>
-===== Example Usage =====
-<code bash>
-thead /etc
-</code>
-<code bash>
-thead /usr/include
-</code>
-<code bash>
-find $HOME -ctime 0 -print | thead
-</code>
-<code bash>
-for NAME in 'who | sed "s/^\([^ ]*\).*/\1/"'
-do
-done
-</code>
-<code bash>
-find $HOME -name "*.c" -print | thead
-</code>
-and
-<code bash>
-find $HOME -name "*.c" -exec head {} \;
-</code>