keychain solves this in a painless way. It’s in the repos for Debian/Ubuntu: sudo apt-get install keychain and perhaps for many other distros (it looks like it originated from Gentoo). This program will start an ssh-agent if none is running, and provide shell scripts that can be sourced and connect the current shell to this … Read more
This worked for me: – name: Download zsh installer get_url: url: https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh dest=/tmp/zsh-installer.sh – name: Execute the zsh-installer.sh shell: /tmp/zsh-installer.sh – name: Remove the zsh-installer.sh file: path: /tmp/zsh-installer.sh state: absent
Have to recomment the Exploring Expect book for all expect programmers — invaluable. I’ve rewritten your code: (untested) proc login {user pass} { expect “login:” send “$user\r” expect “password:” send “$pass\r” } set username spongebob set passwords {squarepants rhombuspants} set index 0 spawn telnet 192.168.40.100 login $username [lindex $passwords $index] expect { “login incorrect” { … Read more
You cannot call a shell function from outside the shell where it was defined. A shell function is a concept inside the shell. The parallel command itself has no way to access it. Calling export -f doit in bash exports the function via the environment so that it is picked up by child processes. But … Read more
You can quote the pattern: grep -r –exclude=”*.cmd” “ckim” ./ PS. ./ is the current directory
You need to explicitly run bash: docker run -it debian /bin/bash The -i means “run interactively”, and -t means “allocate a pseudo-tty”. A good place to read a bit more is the section Running an interactive shell in the Quickstart documentation.
The problem lies in your script invocation. You’re issuing: $ sudo sh if_test.sh On Ubuntu systems, /bin/sh is dash, not bash, and dash does not support the double bracket keyword (or didn’t at the time of this posting, I haven’t double-checked). You can solve your problem by explicitly invoking bash instead: $ sudo bash if_test.sh … Read more
Do use the expression {string:position:length} So in this case: $ str=”abcdefghijklm” $ echo “${str:0:5}” abcde See other usages: $ echo “${str:0}” # default: start from the 0th position abcdefghijklm $ echo “${str:1:5}” # start from the 1th and get 5 characters bcdef $ echo “${str:10:1}” # start from 10th just one character k $ echo … Read more
As others have documented here, using the string “true” is a red herring; this is not an appropriate way to store boolean values in shell scripts, as evaluating it means dynamically invoking a command rather than simply inspecting the stored value using shell builtins hardcoded in your script. Instead, if you really must store an … Read more
BUFFER is called buffer. (man 1 buffer, maybe after apt-get install buffer)