Create a new file in git bash
If you are using the Git Bash shell, you can use the following trick: This is actually the same as: Then, you can use git add webpage.html to stage the file.
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Implementing shell in C and need help handling input/output redirection
You have way too many file descriptors open after your redirection. Let’s dissect the two paragraphs: I’m going to be charitable and ignore the fact that you are ignoring errors. However, you will need to error check your system calls. In the first paragraph, you open a file and capture the file descriptor (it might … Read more
Run a string as a command within a Bash script
You can use eval to execute a string:
How to read a file into a variable in shell?
In cross-platform, lowest-common-denominator sh you use: In bash or zsh, to read a whole file into a variable without invoking cat: Invoking cat in bash or zsh to slurp a file would be considered a Useless Use of Cat. Note that it is not necessary to quote the command substitution to preserve newlines. See: Bash Hacker’s Wiki – Command substitution – Specialities.
how to fix the issue “Command /bin/sh failed with exit code 1” in iphone
Click On Run checkbox if not selected.
get “ERROR: Can’t get master address from ZooKeeper; znode data == null” when using Hbase shell
If you just want to run HBase without going into Zookeeper management for standalone HBase, then remove all the property blocks from hbase-site.xml except the property block named hbase.rootdir. Now run /bin/start-hbase.sh. HBase comes with its own Zookeeper, which gets started when you run /bin/start-hbase.sh, which will suffice if you are trying to get around … Read more
Using sudo with Python script
Try this and let me know if it works. 🙂 And this one: os.popen(“sudo -S %s”%(command), ‘w’).write(‘mypass’)
dquote> result of a execution a program in linux shell
It means you’ve executed a line of code with only one double-quote character, like this: The shell is waiting for the other quote.
Is there a “goto” statement in bash?
No, there is not; see §3.2.4 “Compound Commands” in the Bash Reference Manual for information about the control structures that do exist. In particular, note the mention of break and continue, which aren’t as flexible as goto, but are more flexible in Bash than in some languages, and may help you achieve what you want. … Read more
How to convert a string to lower case in Bash?
The are various ways: POSIX standard tr AWK Non-POSIX You may run into portability issues with the following examples: Bash 4.0 sed Perl Bash Note: YMMV on this one. Doesn’t work for me (GNU bash version 4.2.46 and 4.0.33 (and same behaviour 2.05b.0 but nocasematch is not implemented)) even with using shopt -u nocasematch;. Unsetting that … Read more