At times you need to specify different courses of action to be taken in a shell script, depending on the success or failure of a command. The if construction ...
2017年1月20日 — I would like to know how can I write if conditions inside a bash script on a single line. For example, how can I write this on a single line, ...
2018年11月15日 — IMHO best way is you could simply do man test for all these details. It is very well explained there. As follows is the text from man page.
2018年5月6日 — if [ -L file ], if test -x file, file是個符號連結 ; if [ -b file ], if test -b file, file is a block special file ; if [ -c file ], if test -c ...
2011年5月5日 — -o : True if shell option OPTIONNAME is enabled. -L : True if FILE exists and is a symbolic link. http://tldp.org/LDP/Bash-Beginners-Guide ...