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string_operations

1044 Treffer, Zuletzt geändert: vor 2 Monaten

====== String Operations in Bash/Shell ====== Quelle((http://www.softpanorama.org/Scripting/Shellorama/Reference/string_operations_in_shell.shtml)) ===== Length Operator ===== T... wo way to get length of the string. The simplest one is ${#varname}, which returns the length of the ... g" '$substring' $substring is a regular expression. expr "$string" : '$substring' $substring is a

test

37 Treffer, Zuletzt geändert: vor 2 Monaten

=== Quelle((http://tldp.org/LDP/abs/html/comparison-ops.html)) ===== Other Comparison Operators ===== ==== integer comparison ==== ---- -eq is equal to <code> if [ "$a" -eq "$b" ]<... code>(("$a" >= "$b"))</code> ==== string comparison ==== = is equal to <code>if [ "$a" = "$b" ]</

monitor

4 Treffer, Zuletzt geändert: vor 2 Monaten

====== Directory/File Monitoring with Bash ====== <code> #!/bin/bash # File Monitor # function list () { #ls -l #sleep 1 # more elegant: watch -n 1 "ls -l" } while true; do list | grep $1 done </code>