Questions tagged [case]
A reserved word in shells used for running commands based on pattern matching. It must be terminated by "esac".
88
questions
2
votes
2
answers
339
views
For loop through a variable vector
I have a for loop and case statements. The for loop has quite a bit element list and the case statement will assign an 1D array or a vector. These values will be used in for loop after. I have the ...
- 21
0
votes
0
answers
30
views
Case Statement Not Working as Expected [duplicate]
I am attempting to write a bash script that takes input from the keyboard and displays text depending on what number was entered:
#!/bin/bash
read -p "Enter your age: " AGE
case $AGE in
...
-2
votes
1
answer
96
views
Was `esac` intentionally `case` just in reverse? [duplicate]
I just realized that in shell scripting esac, the closing statement for case is just case reversed. This may be a stupid question but does esac actually mean something (ie an abbreviation) or was it ...
0
votes
1
answer
100
views
bash script - printing a value of an array based on the value of another array
I have two arrays and want to print a value from ARRAY2 depending on the applicable value in ARRAY1.
#!/usr/bin/env bash
ARRAY1=(bb.service.sql bw.service.sql)
ARRAY2=(bb bw)
case $ARRAY1[@] in
${...
- 139
1
vote
1
answer
56
views
Bash - How to make dynamic menu selection without eval
I'm making a script for Docker environments, and I'm a bit stuck with a pigeonhole I've gotten myself into.
#!/bin/bash
set -euo pipefail
# Variables
gituser="modem7"
gitrepo="docker-...
- 11
1
vote
1
answer
41
views
Selecting from various media using awk shell script
I have made a simple backup program for my bin folder. It works.
Code and resultant STDOUT below.
Using rsync to copy from local ~/bin folder to a /media/username/code/bin folder. The code works fine ...
- 33
0
votes
1
answer
288
views
getopt and case function not executing
I encountered such a problem when passing a parameter to a script, the function corresponding to the case menu is not executed. The script accepts parameters as input and performs the appropriate ...
- 1
0
votes
1
answer
20
views
if condition always false despite the condition being true upon manual execution
I wish to search for a string mongo and not starting with comment i.e # in a file.
homedir=`ls -d ~`
echo "$homedir"
if [[ `cat $homedir/2_need_softwares.txt | grep -v '^#' | grep -iq ...
- 459
2
votes
3
answers
2k
views
Bash, use case statement to check if the word is in the array
I am writing a script which must accept a word from a limited predefined list as an argument. I also would like it to have completion. I'm storing list in a variable to avoid duplication between ...
- 252
2
votes
1
answer
689
views
Bash : Case statement that doesn't match a given string
I'm trying to write a case statement where the variable argument does not match a test expression.
In other words:
case $db in
[Some Code Here])
echo "Not a valid database type&...
- 1,950
5
votes
3
answers
1k
views
Case on multiple variables at once bash
I want to know if there is any way to case on multiple variables at once, like this:
#/bin/bash
arr1=(1 2)
arr2=(3 4)
foo=1
bar=2
case $foo && $bar in
${arr1[@]})
echo "...
0
votes
1
answer
297
views
Possible to match multiple conditions in one case statement and pass them as variables?
I have a bash script where I want to set a case variable. For file1 there are two different NUMBER variables that I then I want to pass to a text file.
I have tried the following:
case $FILE in
&...
- 1
0
votes
1
answer
732
views
Switch case with for loop for matching string
I am trying below thing but not able to succeed
I have file with below content
events_0-new
events_1-new
events_2-new
events_3-new
events_4-new
events_5-new
events_6-new
system-events_0-new
system-...
- 55
0
votes
1
answer
203
views
using heredoc in case statement for remote ssh host
I have a list of ssh commands to run on remote server, so wrote this snippet.
#!/usr/bin/env bash
echo ''
echo "WOULD YOU LIKE TO PERFORM FILES CLEANUP: "
read choice
case $choice in
yes|...
- 1,889
0
votes
3
answers
266
views
Bash script with getopt fall into "default" the second argument
I am re-learning getopt with a tiny script in bash, but the second parameters fall into default branch of case.
#! /bin/bash
LONG_OPTION_LIST=(
"arg-a"
"arg-b:"
"...
- 234
0
votes
1
answer
37
views
Converting Control and Case vcf files into a format that can be processed by plink 1.9.0
I have two vcf files, one containing samples with TP53 mutations, and one containing samples with no TP53 mutations. The vcf without the mutations is the control and the vcf with the mutations is the ...
0
votes
0
answers
55
views
function exported from .bashrc giving unexpected token for case pattern
I am using Ubuntu 18.04 LTS with Gnu Bash 5.
Am getting the following error
/bin/bash: printm: line 56: syntax error near unexpected token `('
/bin/bash: printm: line 56: ` +([[:digit:]]))'
/bin/bash: ...
- 1,183
0
votes
1
answer
559
views
Returning to main menu after calling a different script
I am having a menu based script which calls for an additional shell script.
The challenge is that, after the additional shell script is finished, instead of returning to the main menu, it exits ...
- 41
0
votes
1
answer
221
views
case-substring function and quoting
i use a simple function in a script in order to ckeck if a string contains a particular substring:
#!/bin/bash
#
subs() {
case $2 in
*$1*)
return 0 ;;
*)
...
- 3
1
vote
1
answer
105
views
Changing the case of lines in ed
Can I employ the tr command to change the case of a line or range of lines while working in ed? Or is there another way?
- 482
1
vote
3
answers
2k
views
Matching a valid version number inside case statement
I want to match a version number inside a case statement. The version number could look like this
1.12.0.32
1.12.0.32.1
2.10.0.30.1.2
and is stored inside a shell variable: version.
As I searched on ...
- 375
0
votes
1
answer
2k
views
syntax error near unexpected token `)' when using case command
I am parsing option arguments to a bash function, where one of the options allows an optional arguments.
Bash has started to complain about an unexpected token `)', but cannot see clearly what's wrong ...
- 371
0
votes
2
answers
56
views
how can I check/test 2 conditions then execute a specific list of commands I tried case, I tried if, I tried for not working
sorry if it was confusing.
here is what the script needs to be doing
I input 2 values.
DB Server name= 192.168.1.1
DB schema = My_DB_schema
Then I need a method to execute some command when those 2 ...
- 47
0
votes
1
answer
334
views
a simple case/esac construct exercise fails, why?
This is the BASH script:
#!/bin/bash
read -p "Type in a color name, please: " COLOR
case "$COLOR" in
green | red | yellow)
echo -n "nice colors!"
;;
*)
...
- 727
5
votes
2
answers
1k
views
How to match a specific word or its parts in a case statement?
Suppose one has the following case:
#!/bin/sh
case $1 in
e|ex|exa|exam|examp|exampl|example) echo "OK"
;;
t|te|tes|test) echo "Also OK"
;;
*) echo "Error!"
;;
esac
Is ...
- 53
2
votes
1
answer
297
views
Executing a remote script from a code repository causes endless loop
I often execute raw versions of remote Bash scripts in GitHub with this pattern:
wget -O - https://raw.githubusercontent.com/<username>/<project>/<branch>/<path>/<file> | ...
0
votes
1
answer
729
views
Asterisk * is not accepting in Case statement in bash
Asterisk is not accepting in my case statement, My case statement is below, i tried escaping with \ " ',but no luck.
can you correct me where i am wrong here.
case $tdat in
*['\*''!'@#$%^&...
- 393
1
vote
2
answers
542
views
Case statement help
I am quite new to Unix and I need help with this case statement.
What I want to do is to make the user select a variable with a case statement and then make the system read the result of the choice ...
- 37
0
votes
1
answer
332
views
How to handle switch without argument?
I wrote a simple bash script for some USB webcam image settings and restarting of the webcamd service.
At this moment, when someone uses the -t flag, they can use only "n" or "d", ...
- 3
0
votes
1
answer
41
views
Is it possible to write a script that appends a "#" to any line of a file that begins with a capital letter?
In order to make a school project easier, I want to append a delimiter to each line beginning with a capital letter with a bash script. Could anyone help me out? I've tried reading the file line-by-...
0
votes
1
answer
89
views
What is the "in" in the case statement?
In a case statement like this:
case $foo in
bar)
echo "the value of foo is bar"
;;
*)
echo "the value of foo is not bar"
;;
esac
...
- 3,255
57
votes
3
answers
83k
views
Possible to match multiple conditions in one case statement?
I would like to do something like this where on Friday, the output is for both conditions that match:
#!/bin/bash
#!/bin/bash
NOW=$(date +"%a")
case $NOW in
Mon)
echo "Mon";;
Tue|Wed|...
- 17.3k
7
votes
2
answers
3k
views
How do I differentiate between uppercase and lowercase characters in a case statement?
I'm trying to revive my rusty shell scripting skills, and I've run into a problem with case statements. My goal in the program below is to evaluate whether a user-supplied string begins with a capital ...
- 73
3
votes
1
answer
863
views
How to have a case parameter in shell scripting that is followed by a different parameter?
I want the user to type in -s followed by a number (e.g. -s 3). However, I can't seem to be passing another variable next to the existing -s. This is my code:
echo choose
read choice
case $...
- 43
7
votes
2
answers
591
views
Using a variable as pattern for case command [duplicate]
So this is my code:
#!/bin/bash
action_list='list|add|rem'
while true; do
echo "Actions include: list - show list
add - add item to list
...
- 81
10
votes
2
answers
2k
views
POSIX catch newline in case statement
I want to catch if a variable is multiline in a case statement in POSIX shell (dash).
I tried this:
q='
'
case "$q" in
*$'\n'*) echo nl;;
*) echo NO nl;;
esac
It returns nl in zsh but NO ...
- 207
0
votes
1
answer
178
views
BASH - case option where i can input username
I have a case script and need to input username in option -u user...
how to type variable user to be able in this option list groups of specific typed user, thanks for help
#!/bin/bash
while [[ "$1" =...
6
votes
3
answers
3k
views
AND operator in case statement
I have following code.
read -p "Enter a word: " word
case $word in
[aeiou]* | [AEIOU]*)
echo "The word begins with a vowel." ;;
[0-9]*)
echo "The word begins with a digit." ;;...
- 571
-2
votes
1
answer
737
views
using case statement to read from a variable/file while creating a MENU
read -p 'enter your choice [ 1-5 ]' choice
case $choice in
1)abcrequest
2)defresponse
3)afgRequestReply
4)FSfReply
5)ghjrequest
I want the case ...
3
votes
1
answer
2k
views
bash `case` statement to classify input as non- and integers
summary: I'd like to use a bash case statement (in other code) to classify inputs as to whether they are
a positive integer
a negative integer
zero
an empty string
a non-integer string
Executable ...
- 1,275
0
votes
1
answer
387
views
nested case statement in shell script
Below is the list of files i've in my current directory:
ctc.SNAPSHOT-1.0.1-abc.gz
ctc.SNAPSHOT-2.0.1-bcd.gz
ApprovedList.A
ApprovedList.B
cat ApprovedList.A
BC
DEF
I want to pass 3 parameters to ...
- 3
-1
votes
2
answers
876
views
The need for $1 and $2 for comparison with an here-string
This is a follow up to this question;
I don't know why but I keep misunderstanding the following code, although I try very hard to understand it:
function read_and_verify {
read -p "$1:" tmp1
...
user149572
1
vote
3
answers
1k
views
DOS command to Bash command conversion
I need to make Bash take DOS commands in with arguments and then convert the main command to a Bash command and still use the arguments if there are any arguments.
The part I am lost on is how to ...
0
votes
1
answer
49
views
same script on servers get error
I have this script on about 20 servers.
CASE=$1
case $CASE in
"multipath")
status=$(service multipathd status | awk '{gsub(/[.]/,"");print $NF}')
if [ $status = 'running' ]; then
...
- 726
1
vote
2
answers
535
views
Linux - case command
How to have spaces or tabs in the menu list?
PS3='Please enter your choice: '
options=("Option 1" "Option 2" "Quit")
select opt in "${options[@]}"
do
case $opt in
"...
- 13
1
vote
2
answers
380
views
read-verification alternative (two prompts and if-then comparison alternative)
I am trying to create a small script for creating simple, all-default Apache virtual host files (it should be used any time I establish a new web application).
This script prompts me for the domain....
user149572
8
votes
4
answers
13k
views
How to re-run the case statement if the input is invalid? [duplicate]
I have the following code in the middle of a script to confirm whether we want to resume the script or not.
read -r -p "Would you like to continue [Y/N] : " i
case $i in
[yY])
...
user308897
3
votes
1
answer
4k
views
Match wildcarded string in case statement using sh shell
I'm having trouble matching a wilcarded string in the sh shell. The code is part of a configure.ac so it usually gets the lamest shell available. I can't count on the Bash shell.
The code first ...
user56041
13
votes
8
answers
3k
views
Case fallthrough based on if condition
I am looking for a way to have fallthrough happen based on an if condition within a case condition in bash. For example:
input="foo"
VAR="1"
case $input in
foo)
if [ $VAR = "1" ]; then
#...
- 383
9
votes
1
answer
14k
views
Using a variable as a case condition in zsh
My question is the zsh equivalent of the question asked here: How can I use a variable as a case condition? I would like to use a variable for the condition of a case statement in zsh. For example:
...
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