How to force ssh to execute command on the remote system instead of locally
I have SSH executing some commands in a script, like so:
bash
“stdin: is not a tty” mails for running scripts as cron jobs
I have several shell scripts (bash) which are started by cron. Every time a script is executed I get an email saying “stdin: is not a tty”. Can someone please tell me how to fix this? All scripts run successfully but these mails are killing my email folder.
Automatically reconnect to ssh after suspend
I’m using ssh as a SOCKS5 proxy, connecting to my personal server. When my system is suspended or I lose internet connection, the ssh will eventually time out, forcing me to manually reconnect. How can I configure my system to automatically reconnect as soon as an internet connection is established?
Why is my BASH_FUNC_foobar%% environment variable unset in shell subprocesses?
I’m messing around with the security of a setuid binary (with the intention of disclosing anything I find to the author, obviously). I’m pretty sure it has an arbitrary code execution vulnerability because it invokes a shell script and it doesn’t sanitize the environment – I thought of bash’s export -f but I can’t actually make a proof of concept work.
What is causing my “Unexpected EOF Error while looking for …” error?
The command field (the rest of the line) is the command to be run. The
entire command portion of the line, up to a newline or % character, will
be executed by /bin/sh or by the shell specified in the SHELL variable of
the crontab. Percent signs (%) in the command, unless escaped with a
backslash (), will be changed into newline characters, and all data
after the first % will be sent to the command as standard input.
Commands leaking characters to bash
While building a small expect script I noticed that, after executing the script, some characters were automatically on the input of bash. I have seen that on other programs before, but here I have something reproducable.
Is it possible to change the order of a glob?
I am trying to show all instances of a particular message from the syslog in chronological order by doing something like the following:
Why should ‘Character Classes’ be preferred over ‘Character Ranges’ In Shell (Bash)?
The Linux Command Line (Book – page count 47) says:
Fedora’s command-not-found doesn’t work
I’ve recently installed Fedora 19. Packagekit-command-not-found is installed. But its own examples don’t work. When I enter gedti the output is:
Split single string into character array using ONLY bash
I want to split 'hello' into h e l l o in an array using only bash, I could do it in sed with sed 's/./& /g' but I want to know how to split a string into an array in Bash when I do not know what the delimiter would be, or the delimiter is any single character. I don’t think I can use ${i// /} without some creativity because the delimiter is an unknown, and I don’t think that expression accepts regex. I tried using BASH_REMATCH with [[ string =~ ([a-z].).* ]] but it doesn’t work as I expected. What is the proper way to use only bash to accomplish a string.split() type of behavior? The reason is that I am trying to write the rev utility in all bash: