default values

A shell variable may be assigned to by a statement using following syntax: var=value If value is not given, the variable is assigned the null string. In shell program it is quite useful to provide default value for variables. For example consider rsync.sh script: #!/bin/bash RSRC=$1 LOCAL=$2 rsync -avz -e ‘ssh ‘ user@myserver:$RSRC $LOCAL This […]

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