First create a variable ISAY and assign it the original saying value. In this exercise, you will need to change Warren Buffett's known saying. If :$LEN is omitted, extract substring from $POS to end of line STRING="this is a string"Įcho $ # to be or not to be on STRING="this is a string"Įxpr index "$STRING" "$SUBSTRING" # 1 is the position of the first 't' in $STRINGĮxtract substring of length $LEN from $STRING starting after position $POS. Note that the 'expr' command is used in this case.
String Length # 1234567890123456įind the numerical position in $STRING of any single character in $SUBSTRING that matches. The shell allows some common string operations which can be very useful for script writing.
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