mkdir -p ~/Apps
cd ~/Apps
sudo pacman -S --needed base-devel git
git clone https://aur.archlinux.org/paru.git
cd paru
makepkg -si

paru -S name1 name2 ...

paru search1 search2 ...

paru -R name1 name2 ...

paru -Runcs name1 name2 ...

paru -S noto-fonts-extra noto-fonts

paru -S starship

eval "$(starship init bash)"

eval "$(starship init zsh)"

eval "$(starship init fish)"

#prev git color : #FCA17D
# $git_status\
format = """
[](#9A348E)\
${custom.virtenv}\
$os\
$username\
[](bg:#DA627D fg:#9A348E)\
$directory\
[](fg:#DA627D bg:#FF815D)\
${custom.reponame}\
$git_branch\
[](fg:#FF815D bg:#86BBD8)\
$c\
$cmake\
$elixir\
$elm\
$golang\
$haskell\
$java\
$julia\
$nodejs\
$nim\
$rust\
$zig\
$scala\
$python\
[](fg:#86BBD8 bg:#06969A)\
$docker_context\
[](fg:#06969A bg:#33658A)\
$time\
[ ](fg:#33658A)
"""
command_timeout = 5000
# Disable the blank line at the start of the prompt
#add_newline = false

[custom.virtenv]
command = "echo $(basename $VIRTUAL_ENV)"
style = "bg:#9A348E"
format = '[\($output\)]($style)'
when = "[ ! -z $VIRTUAL_ENV ]"

# You can also replace your username with a neat symbol like  to save some space
[username]
show_always = false
style_user = "bg:#9A348E"
style_root = "bg:#9A348E"
format = '[$user ]($style)'

[directory]
style = "bg:#DA627D"
format = "[ $path ]($style)"
truncation_length = 10
truncation_symbol = "…/"

# Here is how you can shorten some long paths by text replacement
# similar to mapped_locations in Oh My Posh:
[directory.substitutions]
"Documents" = " "
"Downloads" = " "
"Music" = " "
"Pictures" = " "
# Keep in mind that the order matters. For example:
# "Important Documents" = "  "
# will not be replaced, because "Documents" was already substituted before.
# So either put "Important Documents" before "Documents" or use the substituted version:
# "Important  " = "  "

[c]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'
detect_extensions = ['c' , 'h' , 'cpp' , 'hpp']

[cmake]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'


[docker_context]
symbol = " "
style = "bg:#06969A"
format = '[ $symbol $context ]($style) $path'

[elixir]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[elm]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[custom.reponame]
command = "basename $(git rev-parse --show-toplevel)"
style = "bg:#FF815D"
format = '[ $output]($style)'
when = "[ 1 -ne 0 ]"

[git_branch]
symbol = " "
style = "bg:#FF815D"
format = '[ $symbol $branch ]($style)'

[git_status]
style = "bg:#FF815D"
format = '[$all_status$ahead_behind ]($style)'

[golang]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[haskell]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[java]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[julia]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[nodejs]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[nim]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[rust]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[zig]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[python]
symbol = " "
style = "bg:#86BBD8 fg:#003050"
format = '[ $symbol ($version) ]($style)'

[time]
disabled = false
time_format = "%R" # Hour:Minute Format
style = "bg:#33658A"
format = '[ $time ]($style)'

paru -S s390x-z13-glibc-bleeding-edge-toolchain

s390x-linux-gcc -lm <FILE_NAME> -o <EXEC_NAME>

QEMU_LD_PREFIX=/opt/s390x-z13-glibc-bleeding-edge/s390x-buildroot-linux-gnu/sysroot qemu-s390x <EXEC_NAME>

s390x-linux-gcc <FILE_NAME> -o exec -no-pie -fno-pie -lm && QEMU_LD_PREFIX=/opt/s390x-z13-glibc-bleeding-edge/s390x-buildroot-linux-gnu/sysroot qemu-s390x exec

./ibm <FILE_NAME>

man unbuffer

truncate -s 2M fs.img
mkfs.ext2 fs.img
mkdir ./tmpdir
sudo mount -o loop fs.img ./tmpdir/
sudo touch ./tmpdir/a # add your desired number of files
sudo umount ./tmpdir

#include <cstdint>
#include <fcntl.h>
#include <linux/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define EXT2_NDIR_BLOCKS 12
#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
struct ext2_inode {
    __le16 i_mode;        /* File mode */
    __le16 i_uid;         /* Low 16 bits of Owner Uid */
    __le32 i_size;        /* Size in bytes */
    __le32 i_atime;       /* Access time */
    __le32 i_ctime;       /* Creation time */
    __le32 i_mtime;       /* Modification time */
    __le32 i_dtime;       /* Deletion Time */
    __le16 i_gid;         /* Low 16 bits of Group Id */
    __le16 i_links_count; /* Links count */
    __le32 i_blocks;      /* Blocks count */
    __le32 i_flags;       /* File flags */
    union {
        struct {
            __le32 l_i_reserved1;
        } linux1;
        struct {
            __le32 h_i_translator;
        } hurd1;
        struct {
            __le32 m_i_reserved1;
        } masix1;
    } osd1;                        /* OS dependent 1 */
    __le32 i_block[EXT2_N_BLOCKS]; /* Pointers to blocks */
    __le32 i_generation;           /* File version (for NFS) */
    __le32 i_file_acl;             /* File ACL */
    __le32 i_dir_acl;              /* Directory ACL */
    __le32 i_faddr;                /* Fragment address */
    union {
        struct {
            __u8 l_i_frag;  /* Fragment number */
            __u8 l_i_fsize; /* Fragment size */
            __u16 i_pad1;
            __le16 l_i_uid_high; /* these 2 fields    */
            __le16 l_i_gid_high; /* were reserved2[0] */
            __u32 l_i_reserved2;
        } linux2;
        struct {
            __u8 h_i_frag;  /* Fragment number */
            __u8 h_i_fsize; /* Fragment size */
            __le16 h_i_mode_high;
            __le16 h_i_uid_high;
            __le16 h_i_gid_high;
            __le32 h_i_author;
        } hurd2;
        struct {
            __u8 m_i_frag;  /* Fragment number */
            __u8 m_i_fsize; /* Fragment size */
            __u16 m_pad1;
            __u32 m_i_reserved2[2];
        } masix2;
    } osd2; /* OS dependent 2 */
};

struct ext2_dirent {
    __u32 inode;
    __u16 rlen;
    __u8 nlen;
    __u8 ttype;
};

int main(int argc, char *argv[]) {
    FILE *fs = fopen("fs.img", "r+");
#define ROOT_INODE_BLK 12
#define BSIZE 1024
#define ROOT_INODE_IDX 2
#define INODE_SIZE 256
#define BPTR(id) ((id) * BSIZE)
#define INODE_PTR(id) (BPTR(ROOT_INODE_BLK) + (id) * INODE_SIZE)
    // #define
    // printf("x %lu\n", sizeof(struct ext2_inode));
    //

    struct ext2_inode nd;
    fseek(fs, INODE_PTR(1), SEEK_SET);
    fread(&nd, sizeof(nd), 1, fs);

    __u8 dat[BSIZE];
    __u32 blkptr = BPTR(nd.i_block[0]);
    fseek(fs, blkptr, SEEK_SET);
    fread(dat, sizeof(dat), 1, fs);

    // printf("%x\n", nd.i_mode);

    __u8 *ptr = dat;
    struct ext2_dirent dirent;

    int i = 0;
    do {
        memcpy(&dirent, ptr, sizeof(dirent));

        if (i++ > 0) {
            dirent.nlen = 1;
            memcpy(ptr, &dirent, sizeof(dirent));
            memcpy(ptr + sizeof(dirent), "..", 1);
        }

        printf("%u %u %u %u %.*s\n", dirent.inode, dirent.rlen, dirent.nlen,
               dirent.ttype, dirent.nlen, (char *)(ptr + sizeof(dirent)));
        ptr += dirent.rlen;
    } while (ptr < dat + BSIZE);

    fseek(fs, blkptr, SEEK_SET);
    fwrite(dat, sizeof(dat), 1, fs);
}

g++ wtf.c && ./a.out
sudo mount -o loop fs.img ./tmpdir/
/bin/ls ./tmpdir