hey guys..
probably a simple question but i cant seem to find any info on it.
i have a small array of strings, and i want to concatenate the contents of the array into one big string.
any ideas on how i can do this?
cheers. (2 Replies)
I m new to shell scripting and what i want is take as an i/p from command line the name of the file and inside my script i should redirect the o/p of my few commands to this file concatenated with .txt
for example if i give
./linux filename
i should get the o/p in filename.txt
i need to... (2 Replies)
Hi Friends,
I'm new to shell scripting and trying to concatenate two Strings to create a filepath like string but I'm getting an unexpected result.
here is my code for 'runToneUserLoad.sh':
script_dir="$(dirname $0)"
echo "Script Dir:$script_dir"
dirtest1="/installedUtility"... (6 Replies)
Hi, all,
I tried to write a simple shell script as follow:
#!/bin/bash
# What want to do in bash is following
# : pcd_viewer cloud_cluster_0.pcd cloud_cluster_1.pcd cloud_cluster_2.pcd cloud_cluster_3.pcd cloud_cluster_4.pcd
STR = "pcd_viewer"
for i in `seq 0 4`
do
STR... (1 Reply)
hi I am on AIX 5 and i have a script that runs the following command to list processes running. I then want to kill the returned processes. The PID are on field 2 separated by spaces.
$ ps -ef|grep "rams.e $PORT"
lesqa 1826998 2646248 0 11:20:35 pts/2 0:00 grep rams.e
t24cm 2789380 ... (3 Replies)
Hi All,
I have written a C program to solve this problem but I am eager to know whether the same output can be obtained using sed or awk?
This is the input:
star
ferry
computer
symbol
prime
time
This is the output:
starferry
ferrycomputer
computersymbol
symbolprime
primetime (7 Replies)
Hi
I'm trying to loop through an array that contains other arrays and these arrays consist of strings with spaces. The problem is that I can't seem to preserve the spacing in the string. The string with spaces are either divided into multiple items if I change IFS to \n or all the elements of... (4 Replies)
Alright, so I'm writing a file for the lexical analyzer (lex). It will be used to check C code (collecting the identifiers and storing those names along with the line numbers the identifier was found on). I'm not used to 'C' so I'm having some difficulty.
I am using a function (insertId()) to... (4 Replies)
Hello All Unix Users,
I am still new to Unix, however I am eager to learn it..
I have 2 files, some lines have some matching substrings, I would like to concatenate these lines into one lines, leaving other untouched. Here below is an example for that..
File 1 (fasta file):
>292183... (6 Replies)
Discussion started by: Mohamed EL Hadi
6 Replies
LEARN ABOUT LINUX
envz_get
ENVZ_ADD(3) Linux Programmer's Manual ENVZ_ADD(3)NAME
envz_add, envz_entry, envz_get, envz_merge, envz_remove, envz_strip - environment string support
SYNOPSIS
#include <envz.h>
error_t envz_add(char **envz, size_t *envz_len,
const char *name, const char *value);
char *envz_entry(const char *envz, size_t *envz_len, const char *name);
char *envz_get(const char *envz, size_t *envz_len, const char *name);
error_t envz_merge(char **envz, size_t *envz_len,
const char *envz2, size_t envz2_len, int override);
void envz_remove(char **envz, size_t *envz_len, const char *name);
void envz_strip(char **envz, size_t *envz_len);
DESCRIPTION
These functions are glibc-specific.
An argz vector is a pointer to a character buffer together with a length, see argz_add(3). An envz vector is a special argz vector, namely
one where the strings have the form "name=value". Everything after the first '=' is considered to be the value. If there is no '=', the
value is taken to be NULL. (While the value in case of a trailing '=' is the empty string "".)
These functions are for handling envz vectors.
envz_add() adds the string "name=value" (in case value is non-NULL) or "name" (in case value is NULL) to the envz vector (*envz, *envz_len)
and updates *envz and *envz_len. If an entry with the same name existed, it is removed.
envz_entry() looks for name in the envz vector (envz, envz_len) and returns the entry if found, or NULL if not.
envz_get() looks for name in the envz vector (envz, envz_len) and returns the value if found, or NULL if not. (Note that the value can
also be NULL, namely when there is an entry for name without '=' sign.)
envz_merge() adds each entry in envz2 to *envz, as if with envz_add(). If override is true, then values in envz2 will supersede those with
the same name in *envz, otherwise not.
envz_remove() removes the entry for name from (*envz, *envz_len) if there was one.
envz_strip() removes all entries with value NULL.
RETURN VALUE
All envz functions that do memory allocation have a return type of error_t, and return 0 for success, and ENOMEM if an allocation error
occurs.
CONFORMING TO
These functions are a GNU extension. Handle with care.
EXAMPLE
#include <stdio.h>
#include <stdlib.h>
#include <envz.h>
int
main(int argc, char *argv[], char *envp[])
{
int i, e_len = 0;
char *str;
for (i = 0; envp[i] != NULL; i++)
e_len += strlen(envp[i]) + 1;
str = envz_entry(*envp, e_len, "HOME");
printf("%s
", str);
str = envz_get(*envp, e_len, "HOME");
printf("%s
", str);
exit(EXIT_SUCCESS);
}
SEE ALSO argz_add(3)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2007-05-18 ENVZ_ADD(3)