if [[ $var == *sub_string ]]; then printf '%s\n' "var ends with sub_string." fi # Inverse (var does not end with sub_string). if [[ $var != *sub_string ]]; then printf '%s\n' "var does not end with sub_string." fi...
you can use thesedcommand to remove any substring from a string. The following example illustrates how you can remove a pre-defined prefix/suffix, or remove all occurrences of a substring from a string variable. One thing to note is that if the substring contains any special character (e.g...
" fiCheck if string ends with sub-stringif [[ $var == *sub_string ]]; then printf '%s\n' "var ends with sub_string." fi # Inverse (var does not end with sub_string). if [[ $var != *sub_string ]]; then printf '%s\n' "var does not end with sub_string." fi...
e.g.--bravo=foooriginally setsOPT='-'andOPTARG='bravo=foo'. Theifstanza sets$OPTto the contents of$OPTARGbefore the first equals sign (bravoin our example) and then removes that from the beginning of$OPTARG(yielding=fooin this step, or an empty string if...
rremovethelastsuffixofafilename s/old/new/substitutenewforoldinthetext.Any delimitermaybeused.An&inthe replacementmeansthevalueofold.With emptyold,uselastold,orthemostrecent !?str?searchiftherewasnopreviousold tremoveallbutthelastpartofafilename, ...
function repeatString() { local -r string="${1}" local -r numberToRepeat="${2}" if [[ "${string}" != '' && "${numberToRepeat}" =~ ^[1-9][0-9]*$ ]] then local -r result="$(printf "%${numberToRepeat}s")" echo -e "${result// /${string}}" fi } Sample runs...
If you add another command, the loop will operate on the same item before moving to the next one. For example, we’ll insert anotherechoto add a suffix to the item. Here’s the output: Bash for Loop With a Shell Variable In addition to an array, you can use a shell variable to ...
There are in fact two other ways to start the BASH debugger. The first way is to pass the ‘--debugger’ option to bash with the name of your script the scripts arguments following that, or with a command string (-c). bash --debugger script script-arguments... ...
Note that adding a prefix or a suffix to a name is just a special case of the more generic replacing of a prefix or a suffix, namely the case for which the original prefix or a suffix happens to be the empty string. Analogously, the case of removing a prefix or a suffix is also...
executes cmdstring as if it were an input line to the shell and then exits. This is used by programs (for example, editors) that call the shell for a single command. sh assigns arguments in cmdstring to the positional parameters. If you specify cmd_name, special parameter 0 is set to...