shellscriptif-s

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2017年11月6日 — You have the answer in your question itself :-) -s $fname expression evaluates to True if the file in variable $fname exists and is not ...

2019年4月15日 — So the command is checking whether a socket (a special kind of file) exists with each name in the loop. The script uses this command as the ...

2018年5月6日 — Shell programming: if 條件式 · if 條件式語法 · if 比較運算子.

2017年3月31日 — The [[ ... ]] part allows to test a condition using operators. Think of it as an if statement. In your example, you're using the -s ...

2022年8月3日 — The keyword if is followed by a condition. · This condition is evaluated to decide which statement will be executed by the processor. · If the ...

The syntax of an bash if statement ... A short explanation of the example: first we check if the file somefile is readable (if [ -r somefile ]). If so, we read ...

2016年12月21日 — In C-shell, it means if the file exists and its non empty · eg : if (-s <file_name) then · echo “File is not empty” · else · echo “File is empty.

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 ...

2012年3月5日 — Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left ...