What you have should work, unless ${STATUS} is empty. It would probably be better to do: or It’s hard to say, since you haven’t shown us exactly what is going wrong with your script. Personal opinion: never use [[. It suppresses important error messages and is not portable to different shells.
The characters ‘<‘, and ‘>’, are to indicate a place-holder, you should remove them to read:
I have seen this issue when creating scripts in Windows env and then porting over to run on a Unix environment. Try running dos2unix on the script: http://dos2unix.sourceforge.net/ Or just rewrite the script in your Unix env using vi and test. Unix uses different line endings so can’t read the file you created on Windows. Hence it is seeing … Read more
When all else fails in Cygwin… Try running the dos2unix command on the file in question. It might help when you see error messages like this: -bash: ‘\r’: command not found Windows style newline characters can cause issues in Cygwin. The dos2unix command modifies newline characters so they are Unix / Cygwin compatible. CAUTION: the dos2unix command modifies files in place, … Read more
Heredoc sounds more convenient for this purpose. It is used to send multiple commands to a command interpreter program like ex or cat The string after << indicates where to stop. To send these lines to a file, use: You could also store these lines to a variable: This stores the lines to the variable named VAR. When printing, remember the … Read more
try grep returns true if it finds the search target, and false if it doesn’t. So NOT false == true. if evaluation in shells are designed to be very flexible, and many times doesn’t require chains of commands (as you have written). Also, looking at your code as is, your use of the $( … ) form of cmd-substitution is to be commended, but think about … Read more
Heredoc sounds more convenient for this purpose. It is used to send multiple commands to a command interpreter program like ex or cat The string after << indicates where to stop. To send these lines to a file, use: You could also store these lines to a variable: This stores the lines to the variable named VAR. When printing, remember the … Read more
$prompt: /path/to/script and hit enter. Note you need to make sure the script has execute permissions.
Bash Space-Separated (e.g., –option argument) Output from copy-pasting the block above Usage Bash Equals-Separated (e.g., –option=argument) Output from copy-pasting the block above Usage To better understand ${i#*=} search for “Substring Removal” in this guide. It is functionally equivalent to `sed ‘s/[^=]*=//’ <<< “$i”` which calls a needless subprocess or `echo “$i” | sed ‘s/[^=]*=//’` which calls two needless subprocesses. Using bash with getopt[s] getopt(1) limitations (older, … Read more
wait waits for a process to finish; sleep sleeps for a certain amount of seconds.