Bash shell find out if a variable has NULL value OR not
last updated in Categories BASH Shell, FreeBSD, Korn Shell Scripting, KSH Shell, Linux, UNIX
Tag: bash shell scripting
Bash Shell Find Out If a Variable Is Empty Or Not
last updated in Categories BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, Suse, UNIXBash Check If Shell Is Interactive or Not Under Linux / Unix Oses
last updated in Categories BASH Shell, Linux, UNIXGrep Include Only *.txt File Pattern When Running Recursive Mode
last updated in Categories BASH Shell, Linux, UNIXI‘m using Debian Linux as my development workstation. I would like to search a directory called ~/projects/ recursively for “foo” word only for *.txt files. How do I search all text files in ~/projects/ for “foo” word using grep command?
Bash Shell: Check If A Function Exists Or Not (Find Out If a Function Is Defined Or Not)
last updated in Categories BASH Shell, Linux, UNIXHow do I determine if a function called foo() is already defined in a bash script or not? If a function called foo() is defined just call it or show an error message?
BASH Shell Test If a File Is Writable or Not
last updated in Categories AIX, BASH Shell, CentOS, Debian / Ubuntu, Fedora Linux, FreeBSD, HP-UX Unix, Linux, OpenBSD, Solaris-Unix, Suse, Ubuntu Linux, UNIXBash Append Text To a Variable
last updated in Categories BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, RedHat and Friends, Suse, Ubuntu Linux, UNIXHow do I append additional text a variable? For e.g., I’ve a vech set as follows:
vech=”London”
I’d like to add (append) “Bus” word to $vevh under UNIX scripting using bash?