This error usually happens if the script has windows line endings instead of unix line endings. Try running dos2unix on the script and try running your command again to see if you get the same error. dos2unix [filename]
You can use the typeset command to make your functions available on a remote machine via ssh. There are several options depending on how you want to run your remote script. #!/bin/bash # Define your function myfn () { ls -l; } To use the function on the remote hosts: typeset -f myfn | ssh … Read more
$1 is used to access the first argument in a script or a function. It is not used to access output from an earlier command in a pipeline. You can use command substitution to get the output of the git command into an environment variable like this: GIT_HASH=`git log –oneline -1` && export GIT_HASH However… … Read more
It doesn’t work because you missed out fi to end your if statement. counter=`ps -ef | grep -c “myApplication”`; if [ $counter -eq 1 ]; then echo “true”; fi You can shorten it further using: if [ $(ps -ef | grep -c “myApplication”) -eq 1 ]; then echo “true”; fi Also, do take note the … Read more
I eventually went with this, which apparently works. I tried the export method at first, but then found that I needed to export every global (constant) variable the script uses. Disable set -e, then run the function call inside a subshell that has set -e enabled. Save the exit status of the subshell in a … Read more
;; is only used in case constructs, to indicate the end of an alternative. (It’s present where you have break in C.) case $answer in yes) echo ‘yay!’;; no) echo ‘boo!’;; esac Syntactically, ; and & both mark the end of a command. A newline is equivalent to ;, in a first approximation. The difference … Read more
A docker container will run as long as the CMD from your Dockerfile takes. In your case your CMD consists of a shell script containing a single echo. So the container will exit after completing the echo. You can override CMD, for example: sudo docker run -it –entrypoint=/bin/bash <imagename> This will start an interactive shell … Read more
You want ./script 2>&1 1>/dev/null | ./other-script The order here is important. Let’s assume stdin (fd 0), stdout (fd 1) and stderr (fd 2) are all connected to a tty initially, so 0: /dev/tty, 1: /dev/tty, 2: /dev/tty The first thing that gets set up is the pipe. other-script’s stdin gets connected to the pipe, … Read more
bash looks at the value of $argv[0] (bash is implemented in C) to determine how it was invoked. Its behavior when invoked as sh is documented in the manual: If Bash is invoked with the name sh, it tries to mimic the startup behavior of historical versions of sh as closely as possible, while conforming … Read more
To copy dirs, it seems you can use adb pull <remote> <local> if you want to copy file/dir from device, and adb push <local> <remote> to copy file/dir to device. Alternatively, just to copy a file, you can use a simple trick: cat source_file > dest_file. Note that this does not work for user-inaccessible paths. … Read more