====== SED - Delete - Delete all lines of a file with N characters ======
sed -in '/^.\{9\}/d'
**NOTE:** May be impacted by the file encoding.
Ensure that the issued sed command is UTF-8 encoded
**file filename** should say UTF-8 Unicode text.
Alternatively, change your terminal and shell settings to UTF-8
**printf à | wc -c** must say 2, not 1.
**locale** should list "UTF-8" or "utf8" in the LC_CTYPE line.
**iconv -f ^Ctin1 -t utf-8 filename | sed '/^.\{4\}/d' | iconv -f utf-8 -t latin1**
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sed -s -i -r '/^.{9}$/d' ./*.txt
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===== Use AWK =====
awk -v n=5 '{ line = $0; gsub("[^[:graph:]]", "") } length >= 23 { print line }'
**NOTE:** Anything over 23 characters it will delete ...you can change 23 to any value.