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//usr/share/awk/readable.awk
# readable.awk --- library file to skip over unreadable files # # Arnold Robbins, arnold@gnu.org, Public Domain # October 2000 BEGIN { for (i = 1; i < ARGC; i++) { if (ARGV[i] ~ /^[A-Za-z_][A-Za-z0-9_]*=.*/ \ || ARGV[i] == "-") continue # assignment or standard input else if ((getline junk < ARGV[i]) < 0) # unreadable delete ARGV[i] else close(ARGV[i]) } }