possibly adding a suffix of ‘.mo’. If you use theTEXTDOMAINvariable, you may need to set theTEXTDOMAINDIRvariable to the location of the message catalog files. Still others use both variables in this fashion:
Install it in one of the directories pointed to by bash-completion'spkgconfigfile variables. There are two alternatives: The recommended directory iscompletionsdir, which you can get withpkg-config --variable=completionsdir bash-completion. From this directory, completions are automatically loaded on...
Optional environment variables $IMPALA_HOST (eg. point to an explicit node or an HAProxy load balancer) and IMPALA_SSL=1 (or use regular impala-shell --ssl argument pass through) impala_foreach_table.sh - executes a SQL query against every table, replacing {db} and {table} in each ...
You can do a lot of things with bash scripts. Performing simple arithmetic operations with the variables is one of them. The syntax for arithmetic operations in the bash shell is this: $((arithmetic_operation)) Let's say you have to calculate the sum of two variables. You do it like th...
The shell allows control of the various characters used by the history expansion mechanism with the histchars variable, as explained above (see Bash Variables). The shell uses the history comment character to mark history timestamps when writing the history file. ...
The Bash array variables come in two flavors, the one-dimensional indexed arrays, and the associative arrays. The indexed arrays are sometimes called lists and the associative arrays are sometimes called dictionaries or hash tables. The support for Bash Arrays simplifies heavily how you can write ...
A HereDoc accepts the use of variables and reads them. To see how this works, create two variables in the terminal: var1="Hello"Copy var2="World"Copy Pass the HereDoc to acatcommand to print the two variables along with anenvironment variable: ...
Some other shell variables that may be worth using include the BASHPID, PID, BASH, SHELL, BASHOPTS, SHELLOPTS, POSIXLY_CORRECT, and BASH_COMPAT. Those variables may be helpful to print at the beginning or end of the log ouput to know what is the current environment in which your script...
Used as an input parameter that you can add when running script. exit [0-255] Used to exit the script and return the number from 0 to 255. $ Used for parameters and variables. () Used for running commands in a subshell. $() Used to save the output of commands. (()) Used ...
For variablesx = 2andy = 3, the output printsx + y = 5to the console. bc Command Thebccommand(short forbasiccalculator) is a command-line utility that renders the bc language. The program runs as an interactive program or takes standard input to perform arbitrary precision arithmetic. ...