docker run --rm -v"$PWD:/mnt"koalaman/shellcheck:stable myscript# Or :v0.4.7 for that version, or :latest for daily builds or usekoalaman/shellcheck-alpineif you want a larger Alpine Linux based image to extend. It works exactly like a regular Alpine image, but has shellcheck preinstal...
unix bash在if-statement中使用STDIN字符串 这是因为在linux上，/dev/fd/0（或/proc/self/fd/0或/p...
status is the status of the last command exited within the script (0 if no commands are executed), and false if filename is not found or cannot be read. alias [-p] [name[=value] ...] Alias with no arguments or with the -p option prints the list of aliases in the form alias na...
would never display the message, since the %VAR% in BOTH IF statements is substituted when the first IF statement is read, since it logically includes the body of the IF, which is a compound statement. So the IF inside the compound statement is really comparing "before" with "after" which...
My script has a functiondo_command()that prints a command and then executes it. I want to put my commands in a bash array of strings, and then print _ execute them with this function. But when I try this with an if statement it fails. This is the script: ...
Unix Shell supports following forms ofif…elsestatement − Most of the if statements check relations using relational operators discussed in the previous chapter. The case...esac Statement You can use multipleif...elifstatements to perform a multiway branch. However, this is not always the best...
The script created during the building of the Interix development environment to run configuration scripts will be used. The following is an example of the listing that results. The configuration looks good except that it did not detect Interix's ability to create shared (dynamic) libraries. For...
可以看到,dtrace script跟普通shell script很类似: 首先指定script的解释执行程序,这里当然是/usr/sbin/dtrace -s 表示后面紧跟着的就是dtrace script 后面的跟one-liner一样,只是分了行而已。 由于trick.d没有指定$target,因此执行的时候,也需要使用-c来执行,否则$target为空,将跟踪所有进程 下面我们执行trickd...
I was running a script on a server that took a while to complete. Since I did not want to lose any output I ran it inside a screen session. Of course, during the course of this, my SSH connection dropped and when I logged in again, and tried to reattached to the session I got ...
However, in one script I have a bash function to detect if a directory is empty: # function to check if directory is empty outputs 0 if empty, or# some positive integer if it does notis_dir_empty() {ls-A"$1"|wc-c } This function is used in an if statement like this: ...