The function tag has no usage guidance.
0
votes
0answers
22 views
How do i run multiple scripts within another script in the same directory?
Last part of a project and I've created 3 scripts already that do the following, but I now need to run them within a 4th script as if it was one program. Below are the instructions as well as the code ...
-1
votes
0answers
24 views
.bashrc - Create an alias for SSH declare Function [duplicate]
So, I have a function:
function () { command1; command2; }
When I do
ssh root@server "$(declare -f function) function parameter"
It works fine. So, I want to make it simplier - through an ...
1
vote
2answers
30 views
Optional parameters in bash function
I have a function for quickly making a new SVN branch which looks like so
function svcp() { svn copy "repoaddress/branch/$1.0.x" "repoaddress/branch/dev/$2" -m "dev branch for $2"; }
Which I use to ...
1
vote
1answer
33 views
how to get or reflect the name of the bash function which is called? [duplicate]
i did not yet found a solution to this. Anyone a hint?
i sometimes write bash functions in my shell scripts and i love to have my scripts being verbose, not just for debugging. so sometimes i would ...
0
votes
0answers
6 views
Removing items in one array based on whats in another array - python [migrated]
I'm trying to make a function that removes items from all_cards based on whats in the iss_answer array. My iss_answer array will change often in my program so I can't just type ...
1
vote
1answer
24 views
Which shells have functions where “local” does not alter exported variables for child processes?
In the example below, an exported variable is re-set as local in a function. Bash, Zsh, Fish don't pass on the original value to the child process. Are there any shells that make local affect the ...
3
votes
2answers
45 views
How to make a function available to the command `parallel` (GNU)?
In Bash, let's consider a function that does nothing but echo the argument followed by "is an integer".
f () { num="${!1}"; echo $num is an integer; }
number=12
f number
# 12 is an integer
I would ...
1
vote
1answer
35 views
How can I source several files into my .bashrc?
I want to write my functions each in separate files, for easier version control, and source the whole lot of them in my .bashrc.
Is there a more robust way than e.g.
. ~/.bash_functions/*.sh
?
0
votes
0answers
21 views
Listing available functions [duplicate]
I have a function defined on my .bashrc that allows me to mkdir and cd into a folder, which I call mkcd.
I could write the same thing using an alias, or as a script.
For aliases and scripts, I can ...
0
votes
2answers
34 views
bash script function argument problem [duplicate]
Not sure why this is producing error. This is a test code emulating my real code. I want to write a wrapper for find and want to allow for any argument, so I'm wrapping each arg in single quotes.
...
3
votes
1answer
29 views
zsh: Tab completion for function with Git commands
In zsh I am using the following function to delete a local and a remote branch with one command:
gpDo () {
git branch -d "$1" && git push --delete origin "$1"
}
Currently, ...
3
votes
3answers
68 views
Executing a Bash Script Function with Sudo
I have a script that does a number of different things, most of which do not require any special privileges. However, one specific section, which I have contained within a function, needs root ...
1
vote
2answers
110 views
POSIX print function definition
Bash can print a function defintion:
$ bash -c 'y(){ echo z; }; export -f y; export -f'
y ()
{
echo z
}
declare -fx y
However this fails under POSIX Bash, /bin/sh and /bin/dash:
$ bash --posix ...
4
votes
2answers
118 views
show only physical disks when using df and mount
When I use df or mount, I'm most of all interested in physical disk partitions. Nowadays the output of those commands is overwhelmed by temporary and virtual filesystems, cgroups and other things I am ...
1
vote
1answer
78 views
Bash FUNCNAME equivalent in Dash
Bash can print the current function name:
$ bash -c 'g(){ echo $FUNCNAME; }; g'
g
However Dash cannot use FUNCNAME:
$ dash -c 'g(){ echo $FUNCNAME; }; g'
It is possible to access the current ...
4
votes
3answers
104 views
Using “@” as a bash function name
Is it possible to use the "@" symbol as a function name in a bash script? The following does not work:
function @() {
echo hello
}
0
votes
1answer
30 views
Pipe encrypted archive to uploader
Assume, I do archive several files with this functions:
gen_password ()
{
gpg --gen-random 1 "$1" | perl -ne'
s/[\x00-\x20]/chr(ord($^N)+50)/ge;
...
3
votes
3answers
97 views
How to determine callee function name in a script
To make it short, doing something like:
-bash$ function tt
{
echo $0;
}
-bash$ tt
$0 will return -bash, but how to get the function name called, i.e. tt in this example instead?
1
vote
2answers
52 views
How do you list all functions and aliases in a specific script?
I have a bash script that's getting quite long. It would be nice if I could list all the functions in it. Even better would be listing the name of the function and any documentation about it's ...
3
votes
3answers
162 views
Recursive Function not Working
I know that this is a ridiculous idea, but I'm trying to get a script to work that branches through every directory on the file system. The file's name is "Everywhere.sh". Here's the code:
...
0
votes
1answer
24 views
display array in a function - not working
What am I missing here?
I have created a simple array:
declare -a appArray=(
"item1 -a -b"
"item2 -c -d"
)
If I echo this I can see it all
echo ${appArray[@]}
> item1 -a -b item2 ...
3
votes
2answers
161 views
How do I remove all but the file name (with no extension) from a full file path? [duplicate]
I am presently writing a Bash function to convert all the man pages listed by equery files <PACKAGE> | grep /usr/share/man/man (if you are unfamiliar equery is a tool used on Gentoo-based ...
1
vote
3answers
87 views
Bash (Git) - Functions, Alias, and SH script files
I have gotten quite prolific with the use of the aliases, especially with all the different git commands and their order and interdependencies etc. So, I've created a few alias that run more complex ...
3
votes
4answers
256 views
How to create a function that can sort an array in bash?
I'm trying to figure out how to make a function that can take an array as a parameter and sort it. I think it is done with positional variables, but I'm not sure.
1
vote
1answer
29 views
Difference between writing `function Name { …; }`, `Name () { …; }` and `function Name () { …; }` in bash [duplicate]
You can write a bash functions several ways:
function JoinStrings {
...;
}
Or
function JoinStrings () {
...;
}
Or
JoinStrings () {
...;
}
Is there any difference between these ...
7
votes
1answer
413 views
Bash alias with a space as a part of the command
I'm trying to create a bash alias, where the alias itself has a space in it.
The idea is that the alias (i.e. con) stands for sudo openvpn --config /path/to/my/openvpn/configs/. Which results in a ...
1
vote
1answer
37 views
How to emulate returning arbitrary values from shell functions?
Shell functions are just statements and they don't return values. Can anyone share best practice on writing functions that return values in bash?
Let's say I've a function that joins two strings:
...
1
vote
1answer
25 views
Function for archiving arbitrary files with encryption
I'm no so advanced in bash so can not make my function work properly.
Here is the code:
archive()
{
for f in $PWD
do
for ((i=1; i++;))
do
7za a "$1".7z $f -pSECRET -mhe
done
...
0
votes
2answers
39 views
Script not able to generate files for backup file
I'm new to shell scripting and I trying to write a script that:
Prompts for a directory
Loops through the directory
If it find files it then backs them up using a function in the script
Creates a ...
0
votes
1answer
51 views
Shell script using function to display system information sending errors
I'm trying to write a script to keep track of my system information. I want to use "function" in the script and just call the functions out. I'm having trouble with the commands working in the ...
2
votes
2answers
192 views
Shell valid function name characters
Using extended Unicode characters is (no-doubt) useful for many users.
Simpler shells (ash (busybox), dash) and ksh do fail with:
tést(){ echo 34; }
tést
But bash, mksh, lksh, and zsh seem to ...
0
votes
2answers
76 views
Shell script using function () not finding command
I'm learning shell scripting and I'm studying how to use function in the shell script. The script is suppose to run as a basic math calculator with two defined numbers by the user. It's suppose to ...
2
votes
1answer
37 views
Is there any danger to using an unset variable in a bash function definition?
Doing some code refactoring, and I realized I don't know if this matters at all:
The function definition is going to be sourced from another file (a sort of library). The function uses certain ...
2
votes
3answers
133 views
Source only part of a script from another script?
This would probably never be the BEST approach to something, but I'm wondering if it's even possible.
Something like:
awk '/function_i_want_to_call/,/^$/{print}' script_containing_function | xargs ...
0
votes
1answer
14 views
Creating a function that reads off an input list of files
I am new to UNIX/Linux and am in the process of writing bioinformatics pipelines.
These pipelines take in input files and pass them through multiple packages.
Say there is a list of files that goes ...
6
votes
1answer
124 views
Function to simplify grep with an often used log
First off, sorry if this is a painfully newbish question!
I'm trying make a function that simplifies grepping a log I have to work with on a regular basis.
I'd like to use extended regexp with it ...
0
votes
2answers
759 views
Bash Scripting echo locally in a function
In bash scripts I try to keep my variables local to functions wherever I can and then pass what I need out of functions like bellow
#!/bin/bash
function FUNCTION() {
local LOCAL="value"
echo ...
1
vote
2answers
59 views
Cursor position in vi at opening of the file
vishex ()
{
echo '#!/bin/bash' > $1;
chmod +x $1;
vi $1
}
The goal of the above function is to have an alias for fast and comfortable creation of bash scripts. I would like that at ...
2
votes
3answers
252 views
Bash function with `getopts` only works the first time it's run
I defined the function f in Bash based on the example here (under "An option with an argument"):
f () {
while getopts ":a:" opt; do
case $opt in
a)
echo "-a was triggered, ...
0
votes
1answer
217 views
bash: syntax error near unexpected token
I'm trying to create a bash alias alias backlight='__backlight () { echo "$@"; cd ~/Code/MSI-Backlight; sudo nodejs ~/Code/MSI-Backlight/msi-backlight.js "$@"; }', it works fine with no parameters but ...
0
votes
2answers
41 views
change permissions to a file and everything inside , recursively
So I want to create an alias called changeAllPermisions that accepts one parameter argument in such a way that when changeAllPermissions argument is called , both Group and Other do not have access to ...
0
votes
0answers
26 views
Lttng tracepoint(provider,tpname, arg)
I want to insert lttng - tracepoint("traceprovider_name"tracepoint_name" "$1"$2") statements with same tracepoint_name and traceprovider_name but with different arguments:
for example:
1)How to ...
0
votes
1answer
103 views
Calling php function from /var/www/folder (as www-user), which is located in a file in /var (or any folder) (with root permissions?)
I wrote a script which "walks" through /var/www/xyz and scans folders and more. The folders are all 'user-bound', so the permissions for a single folder there are set to the specific user.
Running ...
0
votes
2answers
100 views
How to increment local variable in Bash?
Data
1
\begin{document}
3
Code
#!/bin/bash
function getStart {
local START="$(awk '/begin\{document\}/{ print NR; exit }' data.tex)"
echo $START
}
START2=$(getStart)
echo ...
0
votes
2answers
69 views
Returning local values from Bash variables?
I studied this article called Returning Values from Bash Functions.
Data
Lorem.
\begin{document}
hello
\end{document}
Case #1 which does not work
Code
#!/bin/bash
function getStart {
...
3
votes
1answer
46 views
functions arguments
I am having trouble with what should be a simple bash script.
I have a bash script that works perfectly:
function convert_to ()
x_max=2038
y_max=1146
x_marg=100
y_marg=30
x_grid=150
y_grid=150
if ...
5
votes
4answers
416 views
How to use call-by-reference on an argument in a bash function
I am trying to pass a "var name" to a function, have the function transform the value the variable with such "var name" contains and then be able to reference the transformed object by its original ...
1
vote
2answers
100 views
Returning a variable from a function [closed]
I have the Linux script shown below. I can get it to return from the method decrypt nothing which I need to unzip a file. The method decrypt sends a string with the name of a zip file. Please give ...
2
votes
2answers
190 views
Execute only if it is a bash function
I'm looking for something similar to Bash's built-in command that will only run something if it is a function. So currently I have an insecure way of doing:
# Go through arguments in order
for i in ...
1
vote
2answers
500 views
How to call in a kernel level function in user space [closed]
I've developed some helper functions in the kernel. They're called by other functions in the kernel. Currently, they make my custom kernel panic :(
For now (i.e. debugging), I made them as a passive ...
