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string_operations
368 Treffer, Zuletzt geändert:
h Operator ===== There are two way to get length of the string. The simplest one is ${#varname}, which returns the length of the value of the variable as a character string. For example, if filename has the value fred.c, then ... # 15 echo `expr "$stringZ" : '.*'` # 15 Length of Matching Substring at Beginning of String expr m
test
5 Treffer, Zuletzt geändert:
construct. See Example 27-11 for an application of this comparison operator. ---- -z string is null... comparisons on variables #+ whose value consists of all-integer characters. # Caution advised, howev... r. exit $E_NOARGS # Returns 65 as exit status of script (error code). fi filename=$1 if [ ! -f... desired. exit $? # Script returns exit status of pipe. # Actually "exit $?" is unnecessary, as th
 
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